./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh --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 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:18:24,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:18:24,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 08:18:24,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:18:24,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:18:24,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:18:24,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:18:24,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:18:24,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:18:24,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:18:24,830 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:18:24,830 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:18:24,831 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:18:24,831 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:18:24,832 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:18:24,832 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:18:24,833 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:18:24,833 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:18:24,834 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:18:24,834 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:18:24,835 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:18:24,835 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:18:24,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:18:24,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:18:24,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:18:24,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:18:24,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:18:24,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:18:24,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:18:24,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:18:24,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:18:24,840 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:18:24,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:18:24,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:18:24,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:18:24,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:18:24,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:18:24,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:18:24,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:18:24,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:18:24,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:18:24,844 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:18:24,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:18:24,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:18:24,845 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:18:24,845 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:18:24,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:18:24,846 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 [2023-12-02 08:18:25,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:18:25,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:18:25,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:18:25,139 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:18:25,139 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:18:25,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:27,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:18:28,137 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:18:28,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:28,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/fb01b793b/4f3cf6a2e7dd4b4aa12ba66b4829f1ea/FLAGcc2fa2cb2 [2023-12-02 08:18:28,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/fb01b793b/4f3cf6a2e7dd4b4aa12ba66b4829f1ea [2023-12-02 08:18:28,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:18:28,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:18:28,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:18:28,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:18:28,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:18:28,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76957fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28, skipping insertion in model container [2023-12-02 08:18:28,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:18:28,390 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2023-12-02 08:18:28,397 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2023-12-02 08:18:28,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:18:28,448 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:18:28,463 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2023-12-02 08:18:28,465 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2023-12-02 08:18:28,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:18:28,510 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:18:28,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28 WrapperNode [2023-12-02 08:18:28,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:18:28,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:18:28,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:18:28,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:18:28,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,561 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-12-02 08:18:28,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:18:28,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:18:28,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:18:28,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:18:28,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:18:28,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:18:28,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:18:28,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:18:28,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (1/1) ... [2023-12-02 08:18:28,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:18:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:18:28,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:18:28,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:18:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:18:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-02 08:18:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-02 08:18:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:18:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:18:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:18:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 08:18:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 08:18:28,742 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:18:28,744 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:18:29,094 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:18:29,287 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:18:29,287 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 08:18:29,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:29 BoogieIcfgContainer [2023-12-02 08:18:29,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:18:29,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:18:29,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:18:29,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:18:29,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:18:28" (1/3) ... [2023-12-02 08:18:29,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11653fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:29, skipping insertion in model container [2023-12-02 08:18:29,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:28" (2/3) ... [2023-12-02 08:18:29,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11653fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:29, skipping insertion in model container [2023-12-02 08:18:29,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:29" (3/3) ... [2023-12-02 08:18:29,300 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:29,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:18:29,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 08:18:29,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:18:29,389 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65566f67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:18:29,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 08:18:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 08:18:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 08:18:29,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:18:29,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 08:18:29,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:18:29,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:18:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash 9397008, now seen corresponding path program 1 times [2023-12-02 08:18:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:18:29,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004178235] [2023-12-02 08:18:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:18:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:18:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 08:18:29,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 08:18:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 08:18:29,572 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 08:18:29,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 08:18:29,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 08:18:29,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 08:18:29,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:18:29,584 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 08:18:29,589 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:18:29,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:18:29 BoogieIcfgContainer [2023-12-02 08:18:29,609 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:18:29,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:18:29,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:18:29,610 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:18:29,610 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:29" (3/4) ... [2023-12-02 08:18:29,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 08:18:29,614 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:18:29,616 INFO L158 Benchmark]: Toolchain (without parser) took 1448.84ms. Allocated memory is still 132.1MB. Free memory was 94.9MB in the beginning and 83.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2023-12-02 08:18:29,616 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:18:29,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.51ms. Allocated memory is still 132.1MB. Free memory was 94.9MB in the beginning and 80.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 08:18:29,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 132.1MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:18:29,618 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:18:29,619 INFO L158 Benchmark]: RCFGBuilder took 694.89ms. Allocated memory is still 132.1MB. Free memory was 76.5MB in the beginning and 97.8MB in the end (delta: -21.3MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2023-12-02 08:18:29,620 INFO L158 Benchmark]: TraceAbstraction took 316.34ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 83.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 08:18:29,620 INFO L158 Benchmark]: Witness Printer took 4.88ms. Allocated memory is still 132.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:18:29,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.51ms. Allocated memory is still 132.1MB. Free memory was 94.9MB in the beginning and 80.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 132.1MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 132.1MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 694.89ms. Allocated memory is still 132.1MB. Free memory was 76.5MB in the beginning and 97.8MB in the end (delta: -21.3MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * TraceAbstraction took 316.34ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 83.2MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.88ms. Allocated memory is still 132.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 08:18:29,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh --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 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:18:31,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:18:31,746 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 08:18:31,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:18:31,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:18:31,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:18:31,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:18:31,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:18:31,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:18:31,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:18:31,791 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:18:31,791 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:18:31,792 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:18:31,793 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:18:31,793 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:18:31,794 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:18:31,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:18:31,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:18:31,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:18:31,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:18:31,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:18:31,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:18:31,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:18:31,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:18:31,800 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:18:31,800 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 08:18:31,801 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 08:18:31,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:18:31,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:18:31,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:18:31,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:18:31,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 08:18:31,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:18:31,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:18:31,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:18:31,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:18:31,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:18:31,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 08:18:31,805 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 08:18:31,805 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 08:18:31,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:18:31,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 08:18:31,806 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:18:31,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:18:31,806 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 [2023-12-02 08:18:32,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:18:32,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:18:32,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:18:32,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:18:32,175 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:18:32,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:35,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:18:35,335 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:18:35,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:35,347 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/2d98a840f/c82ee0a2276144c0b089120d2417c882/FLAG151fa30d5 [2023-12-02 08:18:35,362 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/data/2d98a840f/c82ee0a2276144c0b089120d2417c882 [2023-12-02 08:18:35,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:18:35,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:18:35,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:18:35,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:18:35,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:18:35,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451ba294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35, skipping insertion in model container [2023-12-02 08:18:35,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:18:35,586 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2023-12-02 08:18:35,593 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2023-12-02 08:18:35,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:18:35,661 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:18:35,680 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2023-12-02 08:18:35,682 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2023-12-02 08:18:35,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:18:35,736 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:18:35,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35 WrapperNode [2023-12-02 08:18:35,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:18:35,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:18:35,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:18:35,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:18:35,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,790 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-12-02 08:18:35,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:18:35,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:18:35,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:18:35,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:18:35,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:18:35,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:18:35,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:18:35,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:18:35,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (1/1) ... [2023-12-02 08:18:35,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:18:35,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:18:35,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:18:35,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:18:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:18:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 08:18:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-02 08:18:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-02 08:18:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:18:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:18:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 08:18:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 08:18:36,029 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:18:36,031 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:18:38,612 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:18:38,640 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:18:38,641 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 08:18:38,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:38 BoogieIcfgContainer [2023-12-02 08:18:38,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:18:38,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:18:38,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:18:38,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:18:38,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:18:35" (1/3) ... [2023-12-02 08:18:38,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77308bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:38, skipping insertion in model container [2023-12-02 08:18:38,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:35" (2/3) ... [2023-12-02 08:18:38,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77308bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:38, skipping insertion in model container [2023-12-02 08:18:38,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:38" (3/3) ... [2023-12-02 08:18:38,651 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_5a.c.cil.c [2023-12-02 08:18:38,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:18:38,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 08:18:38,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:18:38,723 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@239ba555, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:18:38,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 08:18:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 08:18:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 08:18:38,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:18:38,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 08:18:38,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:18:38,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:18:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1797094946, now seen corresponding path program 1 times [2023-12-02 08:18:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:18:38,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533799725] [2023-12-02 08:18:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:18:38,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:18:38,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:18:38,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:18:38,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 08:18:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:18:39,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 08:18:39,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:18:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:18:39,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:18:39,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:18:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533799725] [2023-12-02 08:18:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533799725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:18:39,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:18:39,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:18:39,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720444020] [2023-12-02 08:18:39,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:18:39,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:18:39,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:18:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:18:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:18:39,267 INFO L87 Difference]: Start difference. First operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:18:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:18:39,320 INFO L93 Difference]: Finished difference Result 106 states and 164 transitions. [2023-12-02 08:18:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:18:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 08:18:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:18:39,330 INFO L225 Difference]: With dead ends: 106 [2023-12-02 08:18:39,331 INFO L226 Difference]: Without dead ends: 49 [2023-12-02 08:18:39,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:18:39,338 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:18:39,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:18:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-02 08:18:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-12-02 08:18:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 08:18:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2023-12-02 08:18:39,389 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 6 [2023-12-02 08:18:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:18:39,389 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2023-12-02 08:18:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:18:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2023-12-02 08:18:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 08:18:39,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:18:39,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 08:18:39,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:18:39,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:18:39,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:18:39,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:18:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1797035364, now seen corresponding path program 1 times [2023-12-02 08:18:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:18:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791607040] [2023-12-02 08:18:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:18:39,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:18:39,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:18:39,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:18:39,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 08:18:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:18:54,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:18:54,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:09,406 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 08:19:42,801 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2023-12-02 08:19:44,849 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2023-12-02 08:19:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:19:44,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:44,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:44,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791607040] [2023-12-02 08:19:44,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791607040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:44,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:44,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:19:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917218450] [2023-12-02 08:19:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:19:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:19:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-12-02 08:19:44,855 INFO L87 Difference]: Start difference. First operand 49 states and 68 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:19:47,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:49,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 08:19:51,387 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-02 08:19:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:51,588 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2023-12-02 08:19:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 08:19:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 08:19:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:51,591 INFO L225 Difference]: With dead ends: 49 [2023-12-02 08:19:51,591 INFO L226 Difference]: Without dead ends: 44 [2023-12-02 08:19:51,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2023-12-02 08:19:51,593 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:51,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 162 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 136 Unchecked, 4.5s Time] [2023-12-02 08:19:51,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-02 08:19:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-02 08:19:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 08:19:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2023-12-02 08:19:51,605 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 6 [2023-12-02 08:19:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2023-12-02 08:19:51,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:19:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2023-12-02 08:19:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 08:19:51,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:51,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:51,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 08:19:51,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:51,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:51,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2006561597, now seen corresponding path program 1 times [2023-12-02 08:19:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:51,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007780274] [2023-12-02 08:19:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:51,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:51,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:51,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:51,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 08:19:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:51,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:19:51,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:52,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:52,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:52,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007780274] [2023-12-02 08:19:52,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007780274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:52,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:19:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93042098] [2023-12-02 08:19:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:52,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:19:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:19:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:19:52,008 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:52,418 INFO L93 Difference]: Finished difference Result 97 states and 143 transitions. [2023-12-02 08:19:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:19:52,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-12-02 08:19:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:52,422 INFO L225 Difference]: With dead ends: 97 [2023-12-02 08:19:52,422 INFO L226 Difference]: Without dead ends: 56 [2023-12-02 08:19:52,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:52,425 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:52,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:19:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-02 08:19:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2023-12-02 08:19:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 08:19:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2023-12-02 08:19:52,439 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 37 [2023-12-02 08:19:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:52,440 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2023-12-02 08:19:52,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2023-12-02 08:19:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 08:19:52,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:52,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:52,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 08:19:52,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:52,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:52,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash -744847675, now seen corresponding path program 1 times [2023-12-02 08:19:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364881998] [2023-12-02 08:19:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:52,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:52,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:52,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:52,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 08:19:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:52,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:19:52,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:52,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:52,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:52,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364881998] [2023-12-02 08:19:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364881998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:19:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265055870] [2023-12-02 08:19:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:52,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:19:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:19:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:19:52,846 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:53,234 INFO L93 Difference]: Finished difference Result 99 states and 144 transitions. [2023-12-02 08:19:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:19:53,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2023-12-02 08:19:53,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:53,237 INFO L225 Difference]: With dead ends: 99 [2023-12-02 08:19:53,237 INFO L226 Difference]: Without dead ends: 58 [2023-12-02 08:19:53,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:53,239 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:53,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:19:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-02 08:19:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2023-12-02 08:19:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 08:19:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2023-12-02 08:19:53,250 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 40 [2023-12-02 08:19:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:53,251 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2023-12-02 08:19:53,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2023-12-02 08:19:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 08:19:53,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:53,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:53,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 08:19:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:53,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:53,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1911535032, now seen corresponding path program 1 times [2023-12-02 08:19:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:53,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742282981] [2023-12-02 08:19:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:53,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:53,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:53,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:53,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 08:19:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:53,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:19:53,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:53,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:53,642 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:53,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742282981] [2023-12-02 08:19:53,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742282981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:53,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:53,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:19:53,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149029802] [2023-12-02 08:19:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:19:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:19:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:19:53,644 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:54,072 INFO L93 Difference]: Finished difference Result 106 states and 154 transitions. [2023-12-02 08:19:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:19:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-12-02 08:19:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:54,075 INFO L225 Difference]: With dead ends: 106 [2023-12-02 08:19:54,075 INFO L226 Difference]: Without dead ends: 61 [2023-12-02 08:19:54,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:54,077 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:54,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 131 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 08:19:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-02 08:19:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2023-12-02 08:19:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 08:19:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2023-12-02 08:19:54,089 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 41 [2023-12-02 08:19:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:54,090 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2023-12-02 08:19:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2023-12-02 08:19:54,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 08:19:54,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:54,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:19:54,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 08:19:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:54,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:54,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1998722342, now seen corresponding path program 1 times [2023-12-02 08:19:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973455832] [2023-12-02 08:19:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:54,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:54,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:54,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:54,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 08:19:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:54,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:19:54,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:54,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:54,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973455832] [2023-12-02 08:19:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973455832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:54,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:19:54,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:19:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968905445] [2023-12-02 08:19:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:19:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:19:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:19:54,549 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:55,203 INFO L93 Difference]: Finished difference Result 113 states and 164 transitions. [2023-12-02 08:19:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 08:19:55,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-12-02 08:19:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:55,205 INFO L225 Difference]: With dead ends: 113 [2023-12-02 08:19:55,205 INFO L226 Difference]: Without dead ends: 67 [2023-12-02 08:19:55,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:19:55,208 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:55,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 170 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 08:19:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-02 08:19:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2023-12-02 08:19:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 46 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 08:19:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 77 transitions. [2023-12-02 08:19:55,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 77 transitions. Word has length 42 [2023-12-02 08:19:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:55,219 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 77 transitions. [2023-12-02 08:19:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 08:19:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 77 transitions. [2023-12-02 08:19:55,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 08:19:55,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:55,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:19:55,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 08:19:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:55,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:55,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1306723989, now seen corresponding path program 1 times [2023-12-02 08:19:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550577436] [2023-12-02 08:19:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:55,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:55,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:55,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:55,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 08:19:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:55,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:19:55,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:55,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:19:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:19:56,221 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550577436] [2023-12-02 08:19:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550577436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:19:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260799521] [2023-12-02 08:19:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:56,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:19:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:19:56,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:19:56,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 08:19:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:56,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 08:19:56,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 08:19:56,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1260799521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:56,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:19:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 08:19:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928958183] [2023-12-02 08:19:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:19:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:19:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 08:19:56,428 INFO L87 Difference]: Start difference. First operand 54 states and 77 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:19:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:56,485 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2023-12-02 08:19:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:19:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-12-02 08:19:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:56,487 INFO L225 Difference]: With dead ends: 73 [2023-12-02 08:19:56,487 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 08:19:56,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 08:19:56,488 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:19:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 08:19:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 08:19:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4) internal successors, (63), 46 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 08:19:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2023-12-02 08:19:56,495 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 43 [2023-12-02 08:19:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:56,496 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2023-12-02 08:19:56,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:19:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2023-12-02 08:19:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 08:19:56,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:56,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:19:56,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 08:19:56,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 08:19:56,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:19:56,898 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:56,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:56,899 INFO L85 PathProgramCache]: Analyzing trace with hash -683050853, now seen corresponding path program 1 times [2023-12-02 08:19:56,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:56,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780429867] [2023-12-02 08:19:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:56,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:56,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:56,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 08:19:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:56,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:19:56,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:57,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:19:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:19:57,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780429867] [2023-12-02 08:19:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780429867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:19:57,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362723966] [2023-12-02 08:19:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:57,667 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:19:57,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:19:57,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:19:57,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 08:19:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:57,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:19:57,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 08:19:57,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:19:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362723966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:19:57,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:19:57,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 08:19:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78318595] [2023-12-02 08:19:57,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:19:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:19:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:19:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:19:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:19:57,994 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:19:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:19:58,159 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-12-02 08:19:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:19:58,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2023-12-02 08:19:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:19:58,161 INFO L225 Difference]: With dead ends: 74 [2023-12-02 08:19:58,161 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 08:19:58,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 08:19:58,162 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 31 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:19:58,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 169 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:19:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 08:19:58,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 08:19:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-02 08:19:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2023-12-02 08:19:58,168 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 45 [2023-12-02 08:19:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:19:58,169 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2023-12-02 08:19:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:19:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2023-12-02 08:19:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 08:19:58,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:19:58,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:19:58,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 08:19:58,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 08:19:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:19:58,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:19:58,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:19:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -424885415, now seen corresponding path program 1 times [2023-12-02 08:19:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:19:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704087363] [2023-12-02 08:19:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:19:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:19:58,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:19:58,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 08:19:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:58,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:19:58,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:19:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:19:58,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:19:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:19:59,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:19:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704087363] [2023-12-02 08:19:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704087363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:19:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [189972273] [2023-12-02 08:19:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:19:59,396 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:19:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:19:59,398 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:19:59,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 08:19:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:19:59,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:19:59,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 08:20:00,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:20:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [189972273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:20:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:20:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 13 [2023-12-02 08:20:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352664659] [2023-12-02 08:20:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:20:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:20:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:00,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:20:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-02 08:20:00,016 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:00,510 INFO L93 Difference]: Finished difference Result 89 states and 124 transitions. [2023-12-02 08:20:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:20:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2023-12-02 08:20:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:00,511 INFO L225 Difference]: With dead ends: 89 [2023-12-02 08:20:00,512 INFO L226 Difference]: Without dead ends: 72 [2023-12-02 08:20:00,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-02 08:20:00,513 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:00,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 305 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:20:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-02 08:20:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2023-12-02 08:20:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 56 states have internal predecessors, (71), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 08:20:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2023-12-02 08:20:00,524 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 45 [2023-12-02 08:20:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:00,524 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2023-12-02 08:20:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2023-12-02 08:20:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 08:20:00,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:00,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:20:00,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 08:20:00,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-02 08:20:00,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:00,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:00,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 255172955, now seen corresponding path program 1 times [2023-12-02 08:20:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:20:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393245550] [2023-12-02 08:20:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:00,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:00,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:20:00,932 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:20:00,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 08:20:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:00,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:20:00,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:01,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:01,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:20:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393245550] [2023-12-02 08:20:01,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393245550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:01,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [106741178] [2023-12-02 08:20:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:01,651 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:01,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:20:01,652 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:20:01,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-02 08:20:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:01,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:20:01,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 08:20:02,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 08:20:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [106741178] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169650959] [2023-12-02 08:20:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:02,548 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:20:02,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 08:20:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:02,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:20:02,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:02,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:03,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169650959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:03,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:20:03,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 5, 5] total 12 [2023-12-02 08:20:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667816719] [2023-12-02 08:20:03,024 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:20:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 08:20:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:03,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 08:20:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:20:03,026 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 08:20:05,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:05,396 INFO L93 Difference]: Finished difference Result 152 states and 215 transitions. [2023-12-02 08:20:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 08:20:05,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 45 [2023-12-02 08:20:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:05,398 INFO L225 Difference]: With dead ends: 152 [2023-12-02 08:20:05,398 INFO L226 Difference]: Without dead ends: 94 [2023-12-02 08:20:05,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2023-12-02 08:20:05,400 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 53 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:05,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 349 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 08:20:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-02 08:20:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 73. [2023-12-02 08:20:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 64 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 08:20:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2023-12-02 08:20:05,414 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 45 [2023-12-02 08:20:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:05,414 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2023-12-02 08:20:05,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 08:20:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2023-12-02 08:20:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 08:20:05,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:05,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:20:05,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 08:20:05,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-12-02 08:20:05,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 08:20:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:06,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1535410466, now seen corresponding path program 1 times [2023-12-02 08:20:06,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:20:06,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314261866] [2023-12-02 08:20:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:06,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:06,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:20:06,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:20:06,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 08:20:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:06,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:20:06,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:06,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:06,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:20:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314261866] [2023-12-02 08:20:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314261866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [684511882] [2023-12-02 08:20:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:06,850 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:20:06,851 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:20:06,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 08:20:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:06,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:20:06,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-02 08:20:07,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:20:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [684511882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:20:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:20:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2023-12-02 08:20:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404001509] [2023-12-02 08:20:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:20:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:20:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:20:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:20:07,145 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:07,278 INFO L93 Difference]: Finished difference Result 85 states and 113 transitions. [2023-12-02 08:20:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:20:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2023-12-02 08:20:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:07,280 INFO L225 Difference]: With dead ends: 85 [2023-12-02 08:20:07,280 INFO L226 Difference]: Without dead ends: 79 [2023-12-02 08:20:07,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 08:20:07,281 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:07,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 156 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:20:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-02 08:20:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2023-12-02 08:20:07,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 68 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 08:20:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2023-12-02 08:20:07,288 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 49 [2023-12-02 08:20:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:07,289 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2023-12-02 08:20:07,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2023-12-02 08:20:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 08:20:07,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:07,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2023-12-02 08:20:07,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 08:20:07,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 08:20:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:07,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:07,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1592668768, now seen corresponding path program 1 times [2023-12-02 08:20:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:20:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632438667] [2023-12-02 08:20:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:07,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:20:07,692 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:20:07,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 08:20:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:07,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:20:07,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:07,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:08,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:20:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632438667] [2023-12-02 08:20:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632438667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:08,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1248311818] [2023-12-02 08:20:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:08,544 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:20:08,545 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:20:08,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 08:20:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:08,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:20:08,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:08,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1248311818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724961482] [2023-12-02 08:20:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:09,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:09,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:09,054 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:20:09,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 08:20:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:09,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:20:09,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 08:20:09,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:10,120 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-02 08:20:10,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724961482] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 08:20:10,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2023-12-02 08:20:10,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2023-12-02 08:20:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317687251] [2023-12-02 08:20:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:20:10,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 08:20:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 08:20:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:20:10,122 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:10,494 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2023-12-02 08:20:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:20:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2023-12-02 08:20:10,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:10,496 INFO L225 Difference]: With dead ends: 83 [2023-12-02 08:20:10,496 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 08:20:10,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-02 08:20:10,497 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:10,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 269 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:20:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 08:20:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-02 08:20:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 58 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 08:20:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2023-12-02 08:20:10,503 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 49 [2023-12-02 08:20:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:10,504 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2023-12-02 08:20:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 08:20:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2023-12-02 08:20:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 08:20:10,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:10,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-12-02 08:20:10,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 08:20:10,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 08:20:10,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 08:20:11,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:11,106 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:11,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:11,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1591249481, now seen corresponding path program 1 times [2023-12-02 08:20:11,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:20:11,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148364030] [2023-12-02 08:20:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:11,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:20:11,107 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:20:11,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 08:20:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:11,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:20:11,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 08:20:11,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 08:20:12,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:20:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148364030] [2023-12-02 08:20:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148364030] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [455433408] [2023-12-02 08:20:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:12,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:20:12,008 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:20:12,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 08:20:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:12,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 08:20:12,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 08:20:12,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 08:20:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [455433408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668688481] [2023-12-02 08:20:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:13,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:13,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:13,066 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:20:13,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 08:20:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:13,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 08:20:13,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 08:20:13,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 08:20:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668688481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:13,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:20:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 16 [2023-12-02 08:20:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021441263] [2023-12-02 08:20:13,467 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:20:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 08:20:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 08:20:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-02 08:20:13,469 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 16 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 08:20:17,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:17,838 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2023-12-02 08:20:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 08:20:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 54 [2023-12-02 08:20:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:17,840 INFO L225 Difference]: With dead ends: 160 [2023-12-02 08:20:17,840 INFO L226 Difference]: Without dead ends: 83 [2023-12-02 08:20:17,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 08:20:17,841 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 120 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:17,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 400 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 08:20:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-02 08:20:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 68. [2023-12-02 08:20:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.293103448275862) internal successors, (75), 60 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 08:20:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2023-12-02 08:20:17,848 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 54 [2023-12-02 08:20:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:17,848 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2023-12-02 08:20:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 08:20:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2023-12-02 08:20:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 08:20:17,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:20:17,850 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2023-12-02 08:20:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-02 08:20:18,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 08:20:18,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 08:20:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:18,451 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 08:20:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:20:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 945837491, now seen corresponding path program 1 times [2023-12-02 08:20:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:20:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899140250] [2023-12-02 08:20:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:18,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:18,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:20:18,453 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 08:20:18,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 08:20:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:18,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:20:18,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 08:20:19,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 08:20:20,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:20:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899140250] [2023-12-02 08:20:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899140250] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373174879] [2023-12-02 08:20:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:20,228 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:20:20,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:20:20,229 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:20:20,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 08:20:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:20,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:20:20,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 08:20:21,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 08:20:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373174879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191353498] [2023-12-02 08:20:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:20:21,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:20:21,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:20:21,879 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:20:21,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 08:20:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:20:21,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:20:21,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:20:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 08:20:22,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:20:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 08:20:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191353498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:20:22,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:20:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 08:20:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112682984] [2023-12-02 08:20:22,656 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:20:22,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 08:20:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:20:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 08:20:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-02 08:20:22,658 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 08:20:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:20:28,305 INFO L93 Difference]: Finished difference Result 163 states and 220 transitions. [2023-12-02 08:20:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 08:20:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 65 [2023-12-02 08:20:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:20:28,306 INFO L225 Difference]: With dead ends: 163 [2023-12-02 08:20:28,307 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 08:20:28,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 367 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 08:20:28,309 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 99 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:20:28,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 390 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 08:20:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 08:20:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 08:20:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:20:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 08:20:28,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2023-12-02 08:20:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:20:28,311 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 08:20:28,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 08:20:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 08:20:28,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 08:20:28,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 08:20:28,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 08:20:28,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 08:20:28,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 08:20:28,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-02 08:20:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:20:28,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L122(lines 71 124) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L895 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (let ((.cse0 (not (= currentRoundingMode roundNearestTiesToEven)))) (and (or (not (= |base2flt_#in~m| (_ bv0 32))) .cse0) (or .cse0 (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32)))))) [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L899 garLoopResultBuilder]: For program point L116(lines 78 118) no Hoare annotation was computed. [2023-12-02 08:20:31,112 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 67 125) the Hoare annotation is: true [2023-12-02 08:20:31,113 INFO L895 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (or (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (or (not (bvsle (bvadd (_ bv4294967292 32) base2flt_~e) (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))))) (not (= currentRoundingMode roundNearestTiesToEven))) [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L895 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L895 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2023-12-02 08:20:31,113 INFO L899 garLoopResultBuilder]: For program point L259(lines 200 261) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L895 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2023-12-02 08:20:31,114 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L899 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2023-12-02 08:20:31,115 INFO L895 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2023-12-02 08:20:31,116 INFO L895 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2023-12-02 08:20:31,116 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2023-12-02 08:20:31,117 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2023-12-02 08:20:31,117 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2023-12-02 08:20:31,117 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 58 63) the Hoare annotation is: true [2023-12-02 08:20:31,117 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2023-12-02 08:20:31,117 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2023-12-02 08:20:31,121 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:20:31,123 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:20:31,137 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 08:20:31,138 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 08:20:31,139 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-12-02 08:20:31,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:20:31 BoogieIcfgContainer [2023-12-02 08:20:31,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:20:31,140 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:20:31,140 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:20:31,140 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:20:31,141 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:38" (3/4) ... [2023-12-02 08:20:31,143 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 08:20:31,147 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2023-12-02 08:20:31,147 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 08:20:31,154 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-12-02 08:20:31,155 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 08:20:31,155 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 08:20:31,155 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 08:20:31,257 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 08:20:31,257 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 08:20:31,257 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:20:31,258 INFO L158 Benchmark]: Toolchain (without parser) took 115892.75ms. Allocated memory is still 90.2MB. Free memory was 67.8MB in the beginning and 46.2MB in the end (delta: 21.7MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,259 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:20:31,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.66ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 53.0MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.39ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 50.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,260 INFO L158 Benchmark]: Boogie Preprocessor took 46.51ms. Allocated memory is still 90.2MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,260 INFO L158 Benchmark]: RCFGBuilder took 2803.00ms. Allocated memory is still 90.2MB. Free memory was 48.9MB in the beginning and 52.7MB in the end (delta: -3.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,261 INFO L158 Benchmark]: TraceAbstraction took 112495.09ms. Allocated memory is still 90.2MB. Free memory was 52.2MB in the beginning and 52.4MB in the end (delta: -213.7kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,261 INFO L158 Benchmark]: Witness Printer took 117.59ms. Allocated memory is still 90.2MB. Free memory was 52.4MB in the beginning and 46.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 08:20:31,263 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 60.8MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.66ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 53.0MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.39ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 50.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.51ms. Allocated memory is still 90.2MB. Free memory was 50.9MB in the beginning and 49.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2803.00ms. Allocated memory is still 90.2MB. Free memory was 48.9MB in the beginning and 52.7MB in the end (delta: -3.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * TraceAbstraction took 112495.09ms. Allocated memory is still 90.2MB. Free memory was 52.2MB in the beginning and 52.4MB in the end (delta: -213.7kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * Witness Printer took 117.59ms. Allocated memory is still 90.2MB. Free memory was 52.4MB in the beginning and 46.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 60]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 112.4s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 451 mSDsluCounter, 2955 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 136 IncrementalHoareTripleChecker+Unchecked, 2240 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1760 IncrementalHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 715 mSDtfsCounter, 1760 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2023 GetRequests, 1853 SyntacticMatches, 4 SemanticMatches, 166 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=11, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 80 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 87 PreInvPairs, 141 NumberOfFragments, 91 HoareAnnotationTreeSize, 87 FomulaSimplifications, 5273 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1263 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 15.6s SatisfiabilityAnalysisTime, 65.8s InterpolantComputationTime, 1175 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1954 ConstructedInterpolants, 2 QuantifiedInterpolants, 3904 SizeOfPredicates, 55 NumberOfNonLiveVariables, 2304 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 42 InterpolantComputations, 11 PerfectInterpolantSequences, 1029/1239 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-02 08:20:31,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bccc283-323f-4d60-b524-4815e74afddb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE