./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:49:24,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:49:24,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:49:24,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:49:24,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:49:24,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:49:24,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:49:24,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:49:24,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:49:24,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:49:24,418 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:49:24,419 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:49:24,419 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:49:24,423 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:49:24,424 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:49:24,424 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:49:24,425 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:49:24,427 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:49:24,428 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:49:24,430 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:49:24,430 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:49:24,431 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:49:24,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:49:24,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:49:24,433 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:49:24,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:49:24,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:49:24,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:49:24,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:49:24,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:49:24,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:49:24,437 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:49:24,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:49:24,438 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:49:24,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:49:24,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:49:24,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:24,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:49:24,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:49:24,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:49:24,440 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:49:24,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:49:24,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:49:24,441 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:49:24,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:49:24,442 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_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2023-11-12 00:49:24,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:49:24,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:49:24,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:49:24,812 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:49:24,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:49:24,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:28,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:49:28,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:49:28,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:28,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/1c70eb540/1d7c960c019948c192829e00d011fb77/FLAG3d0809ca7 [2023-11-12 00:49:28,480 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/1c70eb540/1d7c960c019948c192829e00d011fb77 [2023-11-12 00:49:28,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:49:28,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:49:28,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:28,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:49:28,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:49:28,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9603a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28, skipping insertion in model container [2023-11-12 00:49:28,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:49:28,747 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2023-11-12 00:49:28,754 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2023-11-12 00:49:28,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:28,833 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:49:28,852 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2023-11-12 00:49:28,854 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2023-11-12 00:49:28,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:28,919 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:49:28,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28 WrapperNode [2023-11-12 00:49:28,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:28,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:28,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:49:28,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:49:28,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,980 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-11-12 00:49:28,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:28,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:49:28,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:49:28,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:49:28,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:28,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:49:29,026 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:49:29,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:49:29,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:49:29,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (1/1) ... [2023-11-12 00:49:29,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:29,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:29,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:49:29,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:49:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:49:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-12 00:49:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-12 00:49:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:49:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:49:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:49:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:49:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:49:29,233 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:49:29,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:49:29,722 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:49:30,112 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:49:30,112 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:49:30,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:30 BoogieIcfgContainer [2023-11-12 00:49:30,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:49:30,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:49:30,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:49:30,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:49:30,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:49:28" (1/3) ... [2023-11-12 00:49:30,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753018eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:30, skipping insertion in model container [2023-11-12 00:49:30,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:28" (2/3) ... [2023-11-12 00:49:30,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753018eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:30, skipping insertion in model container [2023-11-12 00:49:30,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:30" (3/3) ... [2023-11-12 00:49:30,129 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:30,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:49:30,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:49:30,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:49:30,235 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;@6c19b991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:49:30,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:49:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 43 states have internal predecessors, (60), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-12 00:49:30,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:49:30,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:30,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:49:30,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:30,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 12154117, now seen corresponding path program 1 times [2023-11-12 00:49:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067985512] [2023-11-12 00:49:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:49:30,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:49:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:49:30,416 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:49:30,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:49:30,429 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-12 00:49:30,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-12 00:49:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:49:30,439 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:49:30,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:49:30,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:49:30 BoogieIcfgContainer [2023-11-12 00:49:30,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:49:30,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:49:30,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:49:30,485 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:49:30,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:30" (3/4) ... [2023-11-12 00:49:30,489 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:49:30,491 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:49:30,492 INFO L158 Benchmark]: Toolchain (without parser) took 2006.97ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 94.0MB in the beginning and 80.1MB in the end (delta: 13.9MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2023-11-12 00:49:30,493 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory was 58.0MB in the beginning and 57.8MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:49:30,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.13ms. Allocated memory is still 125.8MB. Free memory was 94.0MB in the beginning and 79.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:49:30,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.68ms. Allocated memory is still 125.8MB. Free memory was 79.2MB in the beginning and 76.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:49:30,500 INFO L158 Benchmark]: Boogie Preprocessor took 40.05ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:49:30,501 INFO L158 Benchmark]: RCFGBuilder took 1090.65ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 75.0MB in the beginning and 93.9MB in the end (delta: -18.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2023-11-12 00:49:30,502 INFO L158 Benchmark]: TraceAbstraction took 359.70ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 80.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:49:30,503 INFO L158 Benchmark]: Witness Printer took 5.99ms. Allocated memory is still 151.0MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:49:30,507 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 102.8MB. Free memory was 58.0MB in the beginning and 57.8MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.13ms. Allocated memory is still 125.8MB. Free memory was 94.0MB in the beginning and 79.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.68ms. Allocated memory is still 125.8MB. Free memory was 79.2MB in the beginning and 76.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.05ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 75.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1090.65ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 75.0MB in the beginning and 93.9MB in the end (delta: -18.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * TraceAbstraction took 359.70ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 80.1MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.99ms. Allocated memory is still 151.0MB. Free memory is still 80.1MB. 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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 < 1.399f) 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, 53 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=53occurred 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 [2023-11-12 00:49:30,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:49:33,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:49:33,326 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:49:33,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:49:33,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:49:33,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:49:33,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:49:33,367 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:49:33,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:49:33,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:49:33,370 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:49:33,371 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:49:33,372 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:49:33,376 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:49:33,377 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:49:33,377 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:49:33,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:49:33,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:49:33,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:49:33,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:49:33,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:49:33,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:49:33,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:49:33,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:49:33,385 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:49:33,386 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:49:33,386 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:49:33,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:49:33,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:49:33,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:49:33,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:49:33,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:49:33,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:49:33,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:33,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:49:33,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:49:33,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:49:33,392 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:49:33,392 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:49:33,394 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:49:33,394 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:49:33,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:49:33,395 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_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2023-11-12 00:49:33,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:49:33,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:49:33,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:49:33,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:49:33,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:49:33,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:37,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:49:37,418 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:49:37,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:37,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/ff534d369/7f5a5ba6999b43a7b1302a45700bc1cf/FLAG69caf61ea [2023-11-12 00:49:37,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/data/ff534d369/7f5a5ba6999b43a7b1302a45700bc1cf [2023-11-12 00:49:37,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:49:37,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:49:37,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:37,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:49:37,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:49:37,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:37" (1/1) ... [2023-11-12 00:49:37,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f14b66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:37, skipping insertion in model container [2023-11-12 00:49:37,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:37" (1/1) ... [2023-11-12 00:49:37,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:49:37,752 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2023-11-12 00:49:37,758 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2023-11-12 00:49:37,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:37,868 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:49:37,895 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2023-11-12 00:49:37,896 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_2e53825e-dbde-4af8-9948-2ac9751278b5/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2023-11-12 00:49:37,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:38,000 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:49:38,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38 WrapperNode [2023-11-12 00:49:38,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:38,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:38,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:49:38,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:49:38,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,068 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-12 00:49:38,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:38,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:49:38,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:49:38,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:49:38,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:49:38,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:49:38,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:49:38,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:49:38,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (1/1) ... [2023-11-12 00:49:38,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:38,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:38,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:49:38,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:49:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:49:38,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:49:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-12 00:49:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-12 00:49:38,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:49:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:49:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:49:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:49:38,332 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:49:38,334 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:49:40,974 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:49:40,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:49:40,983 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:49:40,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:40 BoogieIcfgContainer [2023-11-12 00:49:40,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:49:40,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:49:40,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:49:40,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:49:40,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:49:37" (1/3) ... [2023-11-12 00:49:40,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae15bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:40, skipping insertion in model container [2023-11-12 00:49:40,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:38" (2/3) ... [2023-11-12 00:49:40,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae15bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:40, skipping insertion in model container [2023-11-12 00:49:40,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:40" (3/3) ... [2023-11-12 00:49:40,996 INFO L112 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2023-11-12 00:49:41,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:49:41,018 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:49:41,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:49:41,113 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;@63ceb6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:49:41,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:49:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-12 00:49:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:49:41,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:41,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:41,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:41,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2023-11-12 00:49:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:49:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742420462] [2023-11-12 00:49:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:41,155 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 [2023-11-12 00:49:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:49:41,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:49:41,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:49:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:41,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:49:41,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:41,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:49:41,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:49:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742420462] [2023-11-12 00:49:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742420462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:41,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:49:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252486413] [2023-11-12 00:49:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:41,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:49:41,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:49:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:49:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:49:41,851 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:49:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:41,886 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2023-11-12 00:49:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:49:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-12 00:49:41,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:41,898 INFO L225 Difference]: With dead ends: 157 [2023-11-12 00:49:41,898 INFO L226 Difference]: Without dead ends: 74 [2023-11-12 00:49:41,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:49:41,906 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:41,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:49:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-12 00:49:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-12 00:49:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 00:49:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2023-11-12 00:49:41,952 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2023-11-12 00:49:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:41,952 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2023-11-12 00:49:41,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:49:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2023-11-12 00:49:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:49:41,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:41,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:41,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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)] Ended with exit code 0 [2023-11-12 00:49:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:49:42,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:42,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2023-11-12 00:49:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:49:42,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241885755] [2023-11-12 00:49:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:42,171 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 [2023-11-12 00:49:42,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:49:42,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:49:42,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e53825e-dbde-4af8-9948-2ac9751278b5/bin/utaipan-verify-NcY6lQBIFX/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