./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ --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 edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:16:16,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:16:16,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:16:16,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:16:16,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:16:16,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:16:16,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:16:16,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:16:16,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:16:16,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:16:16,575 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:16:16,575 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:16:16,576 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:16:16,577 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:16:16,577 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:16:16,578 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:16:16,578 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:16:16,579 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:16:16,579 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:16:16,580 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:16:16,580 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:16:16,581 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:16:16,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:16:16,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:16:16,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:16:16,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:16:16,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:16:16,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:16:16,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:16:16,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:16:16,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:16:16,586 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:16:16,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:16:16,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:16:16,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:16:16,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:16:16,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:16,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:16:16,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:16:16,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:16:16,590 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:16:16,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:16:16,590 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:16:16,591 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:16:16,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:16:16,591 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_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda [2023-11-19 04:16:16,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:16:16,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:16:16,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:16:16,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:16:16,956 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:16:16,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:20,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:16:20,436 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:16:20,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:20,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/4b1d933ff/a142f4a339244e409ff1cb5480df5bf8/FLAGfc3835001 [2023-11-19 04:16:20,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/4b1d933ff/a142f4a339244e409ff1cb5480df5bf8 [2023-11-19 04:16:20,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:16:20,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:16:20,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:20,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:16:20,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:16:20,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ff9605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20, skipping insertion in model container [2023-11-19 04:16:20,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:20,654 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_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-19 04:16:20,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:20,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:16:20,714 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_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-19 04:16:20,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:20,746 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:16:20,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20 WrapperNode [2023-11-19 04:16:20,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:20,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:20,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:16:20,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:16:20,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,811 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2023-11-19 04:16:20,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:20,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:16:20,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:16:20,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:16:20,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:16:20,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:16:20,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:16:20,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:16:20,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (1/1) ... [2023-11-19 04:16:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:20,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:20,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:16:20,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:16:20,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:16:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:16:20,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:16:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:16:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:16:20,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:16:21,051 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:16:21,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:16:21,238 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:16:21,381 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:16:21,381 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:16:21,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:21 BoogieIcfgContainer [2023-11-19 04:16:21,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:16:21,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:16:21,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:16:21,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:16:21,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:16:20" (1/3) ... [2023-11-19 04:16:21,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e72df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:21, skipping insertion in model container [2023-11-19 04:16:21,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:20" (2/3) ... [2023-11-19 04:16:21,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e72df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:21, skipping insertion in model container [2023-11-19 04:16:21,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:21" (3/3) ... [2023-11-19 04:16:21,396 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:21,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:16:21,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:16:21,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:16:21,504 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;@750ea4a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:16:21,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:16:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:16:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 04:16:21,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:21,520 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:21,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:21,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:21,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1257204277, now seen corresponding path program 1 times [2023-11-19 04:16:21,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:16:21,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723793792] [2023-11-19 04:16:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:16:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:16:21,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:16:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:16:21,887 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:16:21,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:16:21,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:16:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:16:21,897 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:16:21,902 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:16:21,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:16:21 BoogieIcfgContainer [2023-11-19 04:16:21,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:16:21,947 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:16:21,947 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:16:21,947 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:16:21,948 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:21" (3/4) ... [2023-11-19 04:16:21,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:16:21,951 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:16:21,952 INFO L158 Benchmark]: Toolchain (without parser) took 1487.34ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 128.5MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:16:21,952 INFO L158 Benchmark]: CDTParser took 1.17ms. Allocated memory is still 125.8MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:16:21,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.05ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 109.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:16:21,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.80ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:16:21,954 INFO L158 Benchmark]: Boogie Preprocessor took 33.38ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 106.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:16:21,955 INFO L158 Benchmark]: RCFGBuilder took 539.72ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 89.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:16:21,955 INFO L158 Benchmark]: TraceAbstraction took 557.10ms. Allocated memory is still 167.8MB. Free memory was 88.8MB in the beginning and 128.5MB in the end (delta: -39.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:16:21,956 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 167.8MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:16:21,959 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17ms. Allocated memory is still 125.8MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.05ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 109.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.80ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.38ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 106.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.72ms. Allocated memory is still 167.8MB. Free memory was 106.1MB in the beginning and 89.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 557.10ms. Allocated memory is still 167.8MB. Free memory was 88.8MB in the beginning and 128.5MB in the end (delta: -39.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 167.8MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 someBinaryDOUBLEComparisonOperation at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 31.95; [L23] unsigned char var_1_2 = 0; [L24] double var_1_3 = 255.6; [L25] double var_1_4 = 50.8; [L26] double var_1_5 = 4.4; [L27] double var_1_6 = 100.8; [L28] unsigned char var_1_7 = 50; [L29] signed long int var_1_8 = 256; [L30] unsigned char var_1_9 = 25; [L70] isInitial = 1 [L71] FCALL initially() [L72] COND TRUE 1 [L73] FCALL updateLastVariables() [L74] CALL updateVariables() [L45] var_1_2 = __VERIFIER_nondet_uchar() [L46] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L46] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=639/20, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L47] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=1278/5, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L48] var_1_3 = __VERIFIER_nondet_double() [L49] CALL assume_abort_if_not((var_1_3 >= -461168.6018427382800e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 4611686.018427382800e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not((var_1_3 >= -461168.6018427382800e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 4611686.018427382800e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=254/5, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L50] var_1_4 = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L51] RET assume_abort_if_not((var_1_4 >= -461168.6018427382800e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 4611686.018427382800e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=22/5, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L52] var_1_5 = __VERIFIER_nondet_double() [L53] CALL assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L53] RET assume_abort_if_not((var_1_5 >= -461168.6018427382800e+13F && var_1_5 <= -1.0e-20F) || (var_1_5 <= 4611686.018427382800e+12F && var_1_5 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=504/5, var_1_7=50, var_1_8=256, var_1_9=25] [L54] var_1_6 = __VERIFIER_nondet_double() [L55] CALL assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=256, var_1_9=25] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not((var_1_6 >= -461168.6018427382800e+13F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 4611686.018427382800e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=256, var_1_9=25] [L56] var_1_8 = __VERIFIER_nondet_long() [L57] CALL assume_abort_if_not(var_1_8 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_8 >= -2147483648) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L58] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=25] [L59] var_1_9 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L61] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L74] RET updateVariables() [L75] CALL step() [L34] COND FALSE !(\read(var_1_2)) [L37] unsigned char stepLocal_0 = var_1_2; [L38] COND TRUE (-10 != var_1_8) || stepLocal_0 [L39] COND FALSE !(var_1_1 >= 500.5) [L75] RET step() [L76] CALL, EXPR property() [L66-L67] return (var_1_2 ? (var_1_1 == ((double) (var_1_3 + ((((((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) > (var_1_6)) ? (((((var_1_4) > (var_1_5)) ? (var_1_4) : (var_1_5)))) : (var_1_6)))))) : 1) && (((-10 != var_1_8) || var_1_2) ? ((var_1_1 >= 500.5) ? (var_1_7 == ((unsigned char) var_1_9)) : 1) : 1) ; [L76] RET, EXPR property() [L76] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=639/20, var_1_2=0, var_1_3=263, var_1_4=262, var_1_5=264, var_1_6=261, var_1_7=50, var_1_8=-9, var_1_9=254] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 10, 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=26occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 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 [2023-11-19 04:16:21,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ --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 edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:16:24,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:16:24,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:16:24,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:16:24,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:16:24,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:16:24,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:16:24,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:16:24,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:16:24,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:16:24,818 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:16:24,819 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:16:24,819 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:16:24,821 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:16:24,821 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:16:24,821 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:16:24,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:16:24,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:16:24,823 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:16:24,824 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:16:24,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:16:24,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:16:24,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:16:24,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:16:24,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:16:24,827 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:16:24,828 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:16:24,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:16:24,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:16:24,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:16:24,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:16:24,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:16:24,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:16:24,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:24,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:16:24,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:16:24,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:16:24,832 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:16:24,832 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:16:24,833 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:16:24,834 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:16:24,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:16:24,834 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_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd572089f4885b6ba1c299f33956a42c4a7e2e6ff831c60c0b6124e5750ebda [2023-11-19 04:16:25,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:16:25,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:16:25,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:16:25,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:16:25,313 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:16:25,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:28,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:16:28,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:16:28,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:28,626 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/91caa86b7/d3fa1fe661494181a8484f2be3f75d9f/FLAG9f5e7394b [2023-11-19 04:16:28,641 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/data/91caa86b7/d3fa1fe661494181a8484f2be3f75d9f [2023-11-19 04:16:28,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:16:28,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:16:28,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:28,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:16:28,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:16:28,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:28" (1/1) ... [2023-11-19 04:16:28,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315eba75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:28, skipping insertion in model container [2023-11-19 04:16:28,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:28" (1/1) ... [2023-11-19 04:16:28,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:28,871 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_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-19 04:16:28,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:28,944 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:16:28,960 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_83500f6a-5704-4479-a94d-85587b1be8b3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-62.i[915,928] [2023-11-19 04:16:28,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:29,009 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:16:29,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29 WrapperNode [2023-11-19 04:16:29,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:29,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:29,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:16:29,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:16:29,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,077 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2023-11-19 04:16:29,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:29,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:16:29,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:16:29,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:16:29,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:16:29,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:16:29,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:16:29,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:16:29,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (1/1) ... [2023-11-19 04:16:29,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:29,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:16:29,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:16:29,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:16:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:16:29,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:16:29,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:16:29,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:16:29,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:16:29,367 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:16:29,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:16:30,079 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:16:30,086 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:16:30,086 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:16:30,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:30 BoogieIcfgContainer [2023-11-19 04:16:30,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:16:30,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:16:30,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:16:30,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:16:30,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:16:28" (1/3) ... [2023-11-19 04:16:30,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8ad5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:30, skipping insertion in model container [2023-11-19 04:16:30,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:29" (2/3) ... [2023-11-19 04:16:30,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8ad5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:30, skipping insertion in model container [2023-11-19 04:16:30,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:30" (3/3) ... [2023-11-19 04:16:30,098 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-62.i [2023-11-19 04:16:30,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:16:30,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:16:30,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:16:30,187 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;@d564ac6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:16:30,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:16:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:16:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 04:16:30,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:30,207 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:30,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:30,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1896657020, now seen corresponding path program 1 times [2023-11-19 04:16:30,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950640618] [2023-11-19 04:16:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:30,240 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 [2023-11-19 04:16:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:30,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:16:30,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:30,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:16:30,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-19 04:16:30,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:30,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950640618] [2023-11-19 04:16:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950640618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:30,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:30,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:16:30,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128277202] [2023-11-19 04:16:30,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:16:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:30,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:16:30,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:16:30,621 INFO L87 Difference]: Start difference. First operand has 40 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:16:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:30,660 INFO L93 Difference]: Finished difference Result 73 states and 114 transitions. [2023-11-19 04:16:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:16:30,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-11-19 04:16:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:30,672 INFO L225 Difference]: With dead ends: 73 [2023-11-19 04:16:30,672 INFO L226 Difference]: Without dead ends: 36 [2023-11-19 04:16:30,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:16:30,683 INFO L413 NwaCegarLoop]: 48 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, 48 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 [2023-11-19 04:16:30,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:16:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-19 04:16:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-19 04:16:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:16:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2023-11-19 04:16:30,740 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 69 [2023-11-19 04:16:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:30,741 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2023-11-19 04:16:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 04:16:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2023-11-19 04:16:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 04:16:30,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:30,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:30,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:30,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:30,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:30,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1688895292, now seen corresponding path program 1 times [2023-11-19 04:16:30,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084929607] [2023-11-19 04:16:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:30,958 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 [2023-11-19 04:16:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:30,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:16:30,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:31,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:16:31,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 24 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-19 04:16:31,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:16:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 04:16:31,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:31,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084929607] [2023-11-19 04:16:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084929607] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 04:16:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:16:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-19 04:16:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461029478] [2023-11-19 04:16:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:16:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:16:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:16:31,667 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:16:32,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:32,053 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2023-11-19 04:16:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:16:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 69 [2023-11-19 04:16:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:32,057 INFO L225 Difference]: With dead ends: 80 [2023-11-19 04:16:32,059 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 04:16:32,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:16:32,074 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:32,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:16:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 04:16:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2023-11-19 04:16:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:16:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-11-19 04:16:32,091 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 69 [2023-11-19 04:16:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:32,093 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-11-19 04:16:32,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-19 04:16:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-11-19 04:16:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 04:16:32,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:32,097 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:32,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:32,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:32,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:16:32,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 86112070, now seen corresponding path program 1 times [2023-11-19 04:16:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:32,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122554083] [2023-11-19 04:16:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:32,306 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 [2023-11-19 04:16:32,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:32,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:16:32,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83500f6a-5704-4479-a94d-85587b1be8b3/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:16:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:32,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:16:32,522 INFO L285 TraceCheckSpWp]: Computing forward predicates...