./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i --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_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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_ff66922a-3286-44ec-b248-270ee7b332d3/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 d4fe8f11f0c68d7bafb86f3d9a757ae2e080a2c1f07f1d7545768deda82695bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:32,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:32,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:44:32,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:32,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:32,454 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:32,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:32,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:32,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:32,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:32,463 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:32,464 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:32,464 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:32,466 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:44:32,467 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:32,467 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:32,468 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:44:32,468 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:44:32,469 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:32,469 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:44:32,470 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:44:32,471 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:44:32,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:32,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:32,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:44:32,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:44:32,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:44:32,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:32,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:32,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:32,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:32,477 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:44:32,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:32,478 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:32,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:32,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:32,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:32,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:32,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:32,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:32,480 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:44:32,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:44:32,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:32,481 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:32,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:32,482 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_ff66922a-3286-44ec-b248-270ee7b332d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4fe8f11f0c68d7bafb86f3d9a757ae2e080a2c1f07f1d7545768deda82695bc [2023-11-12 00:44:32,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:32,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:32,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:32,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:32,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:32,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:36,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:36,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:36,339 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:36,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/199550c00/3ea77834abef42ffb0f9e1b7d854de0d/FLAG1e79e4a7d [2023-11-12 00:44:36,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/199550c00/3ea77834abef42ffb0f9e1b7d854de0d [2023-11-12 00:44:36,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:36,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:36,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:36,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:36,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:36,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153a863c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36, skipping insertion in model container [2023-11-12 00:44:36,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:36,568 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_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i[915,928] [2023-11-12 00:44:36,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:36,631 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:36,645 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_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i[915,928] [2023-11-12 00:44:36,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:36,687 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:36,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36 WrapperNode [2023-11-12 00:44:36,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:36,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:36,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:36,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:36,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,741 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2023-11-12 00:44:36,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:36,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:36,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:36,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:36,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:36,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:36,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:36,800 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:36,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (1/1) ... [2023-11-12 00:44:36,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:36,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:36,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:36,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:44:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:44:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:44:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:36,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:37,013 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:37,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:37,502 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:37,875 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:37,876 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:37,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:37 BoogieIcfgContainer [2023-11-12 00:44:37,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:37,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:37,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:37,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:37,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:36" (1/3) ... [2023-11-12 00:44:37,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37559280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:37, skipping insertion in model container [2023-11-12 00:44:37,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:36" (2/3) ... [2023-11-12 00:44:37,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37559280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:37, skipping insertion in model container [2023-11-12 00:44:37,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:37" (3/3) ... [2023-11-12 00:44:37,888 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:37,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:37,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:37,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:37,970 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;@36e4647f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:37,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 00:44:37,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:37,986 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:37,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:37,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash 453366862, now seen corresponding path program 1 times [2023-11-12 00:44:38,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014346729] [2023-11-12 00:44:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:38,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:44:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495764379] [2023-11-12 00:44:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:38,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:38,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:38,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:44:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:38,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:44:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:44:39,008 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:44:39,010 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:44:39,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:44:39,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:39,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:44:39,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:44:39,228 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:44:39,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:44:39 BoogieIcfgContainer [2023-11-12 00:44:39,329 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:44:39,332 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:44:39,332 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:44:39,333 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:44:39,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:37" (3/4) ... [2023-11-12 00:44:39,338 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:44:39,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:44:39,341 INFO L158 Benchmark]: Toolchain (without parser) took 2969.75ms. Allocated memory is still 148.9MB. Free memory was 113.7MB in the beginning and 111.2MB in the end (delta: 2.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,342 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 113.2MB. Free memory was 63.5MB in the beginning and 63.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:44:39,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.12ms. Allocated memory is still 148.9MB. Free memory was 113.4MB in the beginning and 101.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.37ms. Allocated memory is still 148.9MB. Free memory was 101.4MB in the beginning and 99.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,350 INFO L158 Benchmark]: Boogie Preprocessor took 57.17ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,352 INFO L158 Benchmark]: RCFGBuilder took 1078.67ms. Allocated memory is still 148.9MB. Free memory was 97.3MB in the beginning and 93.0MB in the end (delta: 4.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,354 INFO L158 Benchmark]: TraceAbstraction took 1447.47ms. Allocated memory is still 148.9MB. Free memory was 92.3MB in the beginning and 112.1MB in the end (delta: -19.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,356 INFO L158 Benchmark]: Witness Printer took 8.24ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 111.2MB in the end (delta: 927.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:44:39,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 113.2MB. Free memory was 63.5MB in the beginning and 63.3MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.12ms. Allocated memory is still 148.9MB. Free memory was 113.4MB in the beginning and 101.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.37ms. Allocated memory is still 148.9MB. Free memory was 101.4MB in the beginning and 99.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.17ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1078.67ms. Allocated memory is still 148.9MB. Free memory was 97.3MB in the beginning and 93.0MB in the end (delta: 4.3MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1447.47ms. Allocated memory is still 148.9MB. Free memory was 92.3MB in the beginning and 112.1MB in the end (delta: -19.7MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 8.24ms. Allocated memory is still 148.9MB. Free memory was 112.1MB in the beginning and 111.2MB in the end (delta: 927.5kB). Peak memory consumption was 2.1MB. 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: 19]: 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 58, overapproximation of bitwiseOr at line 39. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] float var_1_1 = 99.25; [L23] signed short int var_1_6 = 32; [L24] signed short int var_1_7 = 18477; [L25] signed short int var_1_8 = 5; [L26] float var_1_9 = 100.8; [L27] unsigned long int var_1_10 = 256; [L28] unsigned char var_1_11 = 0; [L29] unsigned char var_1_12 = 10; [L30] unsigned long int var_1_13 = 1879106797; [L31] unsigned long int var_1_14 = 1581421231; [L32] signed long int var_1_15 = -32; [L33] unsigned long int last_1_var_1_10 = 256; [L34] signed long int last_1_var_1_15 = -32; [L103] isInitial = 1 [L104] FCALL initially() [L105] COND TRUE 1 [L106] CALL updateLastVariables() [L95] last_1_var_1_10 = var_1_10 [L96] last_1_var_1_15 = var_1_15 [L106] RET updateLastVariables() [L107] CALL updateVariables() [L69] var_1_6 = __VERIFIER_nondet_short() [L70] CALL assume_abort_if_not(var_1_6 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_6 >= -1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L71] CALL assume_abort_if_not(var_1_6 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_6 <= 32767) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=18477, var_1_8=5, var_1_9=504/5] [L72] var_1_7 = __VERIFIER_nondet_short() [L73] CALL assume_abort_if_not(var_1_7 >= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_7 >= 16383) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=5, var_1_9=504/5] [L74] CALL assume_abort_if_not(var_1_7 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=5, var_1_9=504/5] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_7 <= 32767) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=5, var_1_9=504/5] [L75] var_1_8 = __VERIFIER_nondet_short() [L76] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=504/5] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=504/5] [L77] CALL assume_abort_if_not(var_1_8 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=504/5] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_8 <= 16383) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=504/5] [L78] var_1_9 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=0, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L80] var_1_11 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_11 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_11 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L82] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=10, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L83] var_1_12 = __VERIFIER_nondet_uchar() [L84] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L85] CALL assume_abort_if_not(var_1_12 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 <= 255) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L86] CALL assume_abort_if_not(var_1_12 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 != 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1879106797, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L87] var_1_13 = __VERIFIER_nondet_ulong() [L88] CALL assume_abort_if_not(var_1_13 >= 1073741823) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_13 >= 1073741823) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L89] CALL assume_abort_if_not(var_1_13 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_13 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=1581421231, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L90] var_1_14 = __VERIFIER_nondet_ulong() [L91] CALL assume_abort_if_not(var_1_14 >= 1073741824) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(var_1_14 >= 1073741824) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L92] CALL assume_abort_if_not(var_1_14 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(var_1_14 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=256, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=-32, var_1_1=397/4, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L107] RET updateVariables() [L108] CALL step() [L38] unsigned long int stepLocal_1 = last_1_var_1_10; [L39] EXPR last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))) [L39] unsigned long int stepLocal_0 = last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))); [L40] COND FALSE !(stepLocal_0 != last_1_var_1_10) [L45] var_1_1 = var_1_9 [L47] signed short int stepLocal_2 = var_1_6; [L48] COND TRUE \read(var_1_11) [L49] COND TRUE (var_1_7 % var_1_12) >= stepLocal_2 [L50] var_1_10 = ((var_1_13 + var_1_14) - var_1_7) [L57] unsigned long int stepLocal_3 = var_1_10; [L58] COND FALSE !(var_1_1 <= var_1_9) [L65] var_1_15 = var_1_7 [L108] RET step() [L109] CALL, EXPR property() [L99] EXPR last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10))) [L99-L100] return ((((last_1_var_1_10 ^ ((((last_1_var_1_15) > (last_1_var_1_10)) ? (last_1_var_1_15) : (last_1_var_1_10)))) != last_1_var_1_10) ? ((last_1_var_1_10 == (var_1_6 - (var_1_7 - var_1_8))) ? (var_1_1 == ((float) var_1_9)) : 1) : (var_1_1 == ((float) var_1_9))) && (var_1_11 ? (((var_1_7 % var_1_12) >= var_1_6) ? (var_1_10 == ((unsigned long int) ((var_1_13 + var_1_14) - var_1_7))) : (var_1_10 == ((unsigned long int) var_1_12))) : (var_1_10 == ((unsigned long int) var_1_7)))) && ((var_1_1 <= var_1_9) ? ((var_1_10 > (last_1_var_1_15 + (var_1_10 + var_1_7))) ? (var_1_15 == ((signed long int) var_1_7)) : (var_1_15 == ((signed long int) -5))) : (var_1_15 == ((signed long int) var_1_7))) ; [L109] RET, EXPR property() [L109] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=3221192703, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=32767, var_1_1=2, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_15=-32, var_1_10=3221192703, var_1_11=1, var_1_12=2, var_1_13=1073741823, var_1_14=2147483647, var_1_15=32767, var_1_1=2, var_1_6=1, var_1_7=32767, var_1_8=0, var_1_9=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 16, 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=33occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 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 00:44:39,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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_ff66922a-3286-44ec-b248-270ee7b332d3/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 d4fe8f11f0c68d7bafb86f3d9a757ae2e080a2c1f07f1d7545768deda82695bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:44:42,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:42,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:44:42,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:42,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:42,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:42,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:42,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:42,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:42,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:42,274 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:42,275 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:42,275 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:42,276 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:42,276 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:42,277 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:42,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:42,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:42,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:44:42,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:44:42,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:42,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:42,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:42,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:42,283 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:44:42,283 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:44:42,284 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:44:42,284 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:44:42,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:42,285 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:42,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:42,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:44:42,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:42,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:42,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:42,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:42,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:42,288 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:44:42,288 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:44:42,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:42,288 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:42,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:42,289 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_ff66922a-3286-44ec-b248-270ee7b332d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4fe8f11f0c68d7bafb86f3d9a757ae2e080a2c1f07f1d7545768deda82695bc [2023-11-12 00:44:42,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:42,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:42,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:42,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:42,757 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:42,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:46,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:46,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:46,500 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:46,513 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/d8608d7bf/26a53fe426df44dda4206b2c5aac7ad8/FLAG56e690fa4 [2023-11-12 00:44:46,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/data/d8608d7bf/26a53fe426df44dda4206b2c5aac7ad8 [2023-11-12 00:44:46,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:46,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:46,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:46,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:46,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:46,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:46,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a35fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46, skipping insertion in model container [2023-11-12 00:44:46,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:46,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:46,783 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_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i[915,928] [2023-11-12 00:44:46,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:46,896 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:46,918 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_ff66922a-3286-44ec-b248-270ee7b332d3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-18.i[915,928] [2023-11-12 00:44:46,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:46,984 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:46,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46 WrapperNode [2023-11-12 00:44:46,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:46,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:46,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:46,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:46,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,063 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-11-12 00:44:47,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:47,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:47,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:47,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:47,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:47,139 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:47,139 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:47,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:47,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (1/1) ... [2023-11-12 00:44:47,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:47,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:47,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:47,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:44:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:44:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:44:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:47,374 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:47,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:47,827 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:47,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:47,834 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:47,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:47 BoogieIcfgContainer [2023-11-12 00:44:47,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:47,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:47,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:47,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:47,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:46" (1/3) ... [2023-11-12 00:44:47,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a09d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:47, skipping insertion in model container [2023-11-12 00:44:47,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:46" (2/3) ... [2023-11-12 00:44:47,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a09d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:47, skipping insertion in model container [2023-11-12 00:44:47,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:47" (3/3) ... [2023-11-12 00:44:47,874 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-18.i [2023-11-12 00:44:47,898 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:47,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:44:47,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:47,957 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;@cd548b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:47,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:44:47,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 32 states have (on average 1.34375) internal successors, (43), 33 states have internal predecessors, (43), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-12 00:44:47,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:47,977 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:47,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:47,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:47,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1155150215, now seen corresponding path program 1 times [2023-11-12 00:44:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940183584] [2023-11-12 00:44:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:47,999 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 00:44:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:48,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:48,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:48,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:44:48,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2023-11-12 00:44:48,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:48,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940183584] [2023-11-12 00:44:48,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940183584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:48,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:48,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:44:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760725692] [2023-11-12 00:44:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:44:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:44:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:44:48,426 INFO L87 Difference]: Start difference. First operand has 51 states, 32 states have (on average 1.34375) internal successors, (43), 33 states have internal predecessors, (43), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:44:48,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:48,461 INFO L93 Difference]: Finished difference Result 95 states and 160 transitions. [2023-11-12 00:44:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:44:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2023-11-12 00:44:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:48,471 INFO L225 Difference]: With dead ends: 95 [2023-11-12 00:44:48,471 INFO L226 Difference]: Without dead ends: 47 [2023-11-12 00:44:48,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 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 00:44:48,480 INFO L413 NwaCegarLoop]: 68 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, 68 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 00:44:48,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:44:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-12 00:44:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-12 00:44:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:44:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2023-11-12 00:44:48,527 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 102 [2023-11-12 00:44:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:48,527 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2023-11-12 00:44:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-12 00:44:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2023-11-12 00:44:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-12 00:44:48,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:48,532 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:48,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:48,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:48,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:48,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2122845959, now seen corresponding path program 1 times [2023-11-12 00:44:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161583200] [2023-11-12 00:44:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:48,743 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 00:44:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:48,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:48,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 [2023-11-12 00:44:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:49,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:44:49,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-12 00:44:50,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:50,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:50,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161583200] [2023-11-12 00:44:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161583200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:50,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:50,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:44:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489551295] [2023-11-12 00:44:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:44:50,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:44:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:44:50,176 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:50,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:50,713 INFO L93 Difference]: Finished difference Result 136 states and 199 transitions. [2023-11-12 00:44:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:44:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 102 [2023-11-12 00:44:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:50,724 INFO L225 Difference]: With dead ends: 136 [2023-11-12 00:44:50,724 INFO L226 Difference]: Without dead ends: 92 [2023-11-12 00:44:50,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:44:50,727 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 53 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:50,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 206 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:44:50,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-12 00:44:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2023-11-12 00:44:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 00:44:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 114 transitions. [2023-11-12 00:44:50,783 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 114 transitions. Word has length 102 [2023-11-12 00:44:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:50,786 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 114 transitions. [2023-11-12 00:44:50,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:44:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 114 transitions. [2023-11-12 00:44:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:44:50,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:50,796 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:50,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:44:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:51,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:51,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -679720955, now seen corresponding path program 1 times [2023-11-12 00:44:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:44:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507485629] [2023-11-12 00:44:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:51,019 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 00:44:51,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:44:51,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:44:51,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 (4)] Waiting until timeout for monitored process [2023-11-12 00:44:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:51,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 00:44:51,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-12 00:44:59,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:44:59,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:44:59,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507485629] [2023-11-12 00:44:59,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507485629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:59,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:59,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:44:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828647530] [2023-11-12 00:44:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:59,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:44:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:44:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:44:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:44:59,645 INFO L87 Difference]: Start difference. First operand 78 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:45:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:45:01,564 INFO L93 Difference]: Finished difference Result 156 states and 225 transitions. [2023-11-12 00:45:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 00:45:01,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103 [2023-11-12 00:45:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:45:01,579 INFO L225 Difference]: With dead ends: 156 [2023-11-12 00:45:01,579 INFO L226 Difference]: Without dead ends: 154 [2023-11-12 00:45:01,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:45:01,581 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 128 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:45:01,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 537 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 00:45:01,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-12 00:45:01,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 86. [2023-11-12 00:45:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 00:45:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 125 transitions. [2023-11-12 00:45:01,611 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 125 transitions. Word has length 103 [2023-11-12 00:45:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:45:01,612 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 125 transitions. [2023-11-12 00:45:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-12 00:45:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 125 transitions. [2023-11-12 00:45:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-12 00:45:01,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:45:01,614 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:45:01,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:45:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:45:01,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:45:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:45:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1359779325, now seen corresponding path program 1 times [2023-11-12 00:45:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:45:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917325756] [2023-11-12 00:45:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:01,832 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 00:45:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:45:01,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 00:45:01,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/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 (5)] Waiting until timeout for monitored process [2023-11-12 00:45:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:02,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:45:02,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 243 proven. 27 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-12 00:45:04,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:45:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-12 00:45:04,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:45:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917325756] [2023-11-12 00:45:04,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917325756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:45:04,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1483427614] [2023-11-12 00:45:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:45:04,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:45:04,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:45:04,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:45:04,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff66922a-3286-44ec-b248-270ee7b332d3/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-11-12 00:45:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:45:05,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:45:05,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 243 proven. 27 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-12 00:45:08,000 INFO L327 TraceCheckSpWp]: Computing backward predicates...