./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91 --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 5e76bf897418c531679e53fa28b7c04d453b1c5b37fbed71b943af641f77aed6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:10,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:11,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:10:11,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:11,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:11,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:11,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:11,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:11,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:11,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:11,122 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:11,122 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:11,123 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:11,124 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:11,124 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:11,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:11,125 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:11,126 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:11,127 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:11,127 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:11,128 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:11,128 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:11,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:11,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:11,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:10:11,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:11,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:10:11,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:11,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:11,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:11,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:11,134 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:10:11,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:11,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:11,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:11,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:11,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:11,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:11,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:11,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:11,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:11,148 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:11,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:11,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:11,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:11,150 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:11,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:11,151 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_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e76bf897418c531679e53fa28b7c04d453b1c5b37fbed71b943af641f77aed6 [2023-11-25 00:10:11,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:11,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:11,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:11,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:11,486 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:11,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:14,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:15,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:15,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:15,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/1a50b2ba9/9d7f2b06514e414b80dd87ab347ad8ea/FLAGabe119da6 [2023-11-25 00:10:15,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/1a50b2ba9/9d7f2b06514e414b80dd87ab347ad8ea [2023-11-25 00:10:15,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:15,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:15,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:15,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:15,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:15,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc30f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15, skipping insertion in model container [2023-11-25 00:10:15,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,150 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:15,359 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_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i[915,928] [2023-11-25 00:10:15,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:15,453 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:15,474 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_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i[915,928] [2023-11-25 00:10:15,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:15,518 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:15,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15 WrapperNode [2023-11-25 00:10:15,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:15,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:15,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:15,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:15,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,571 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2023-11-25 00:10:15,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:15,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:15,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:15,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:15,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:15,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:15,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:15,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:15,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (1/1) ... [2023-11-25 00:10:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:15,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:15,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:15,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:10:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:10:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:10:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:15,803 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:15,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:16,183 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:16,404 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:16,404 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:10:16,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:16 BoogieIcfgContainer [2023-11-25 00:10:16,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:16,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:16,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:16,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:16,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:15" (1/3) ... [2023-11-25 00:10:16,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db9de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:16, skipping insertion in model container [2023-11-25 00:10:16,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:15" (2/3) ... [2023-11-25 00:10:16,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db9de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:16, skipping insertion in model container [2023-11-25 00:10:16,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:16" (3/3) ... [2023-11-25 00:10:16,426 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:16,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:16,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:10:16,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:16,552 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;@45e42f32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:16,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:10:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-25 00:10:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-25 00:10:16,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:16,587 INFO L195 NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:16,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:16,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1442826406, now seen corresponding path program 1 times [2023-11-25 00:10:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:10:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769146998] [2023-11-25 00:10:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:10:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:10:17,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:10:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:10:17,329 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:10:17,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:10:17,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-25 00:10:17,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:10:17,342 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:10:17,347 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:10:17,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:10:17 BoogieIcfgContainer [2023-11-25 00:10:17,425 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:10:17,426 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:10:17,426 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:10:17,426 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:10:17,427 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:16" (3/4) ... [2023-11-25 00:10:17,429 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:10:17,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:10:17,431 INFO L158 Benchmark]: Toolchain (without parser) took 2337.38ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 76.8MB in the end (delta: 46.1MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2023-11-25 00:10:17,432 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 99.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:10:17,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.88ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 110.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-25 00:10:17,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.19ms. Allocated memory is still 153.1MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:10:17,434 INFO L158 Benchmark]: Boogie Preprocessor took 46.00ms. Allocated memory is still 153.1MB. Free memory was 108.6MB in the beginning and 107.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:10:17,435 INFO L158 Benchmark]: RCFGBuilder took 787.12ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 70.5MB in the end (delta: 36.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-25 00:10:17,435 INFO L158 Benchmark]: TraceAbstraction took 1016.12ms. Allocated memory is still 153.1MB. Free memory was 69.9MB in the beginning and 77.7MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:10:17,436 INFO L158 Benchmark]: Witness Printer took 4.63ms. Allocated memory is still 153.1MB. Free memory was 77.7MB in the beginning and 76.8MB in the end (delta: 871.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:10:17,450 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory was 99.4MB in the beginning and 99.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.88ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 110.7MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.19ms. Allocated memory is still 153.1MB. Free memory was 110.7MB in the beginning and 108.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.00ms. Allocated memory is still 153.1MB. Free memory was 108.6MB in the beginning and 107.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 787.12ms. Allocated memory is still 153.1MB. Free memory was 106.9MB in the beginning and 70.5MB in the end (delta: 36.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1016.12ms. Allocated memory is still 153.1MB. Free memory was 69.9MB in the beginning and 77.7MB in the end (delta: -7.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.63ms. Allocated memory is still 153.1MB. Free memory was 77.7MB in the beginning and 76.8MB in the end (delta: 871.8kB). 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 someBinaryDOUBLEComparisonOperation at line 97, overapproximation of shiftRight at line 53. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 25; [L23] unsigned long int var_1_6 = 2; [L24] unsigned long int var_1_7 = 2762957886; [L25] unsigned long int var_1_8 = 2; [L26] unsigned long int var_1_9 = 1000000000; [L27] unsigned long int var_1_10 = 100; [L28] signed char var_1_11 = 4; [L29] signed char var_1_12 = 8; [L30] signed char var_1_13 = 10; [L31] signed char var_1_14 = 8; [L32] unsigned char var_1_15 = 1; [L33] unsigned char var_1_16 = 0; [L34] double var_1_17 = 32.4; [L35] double var_1_18 = 15.5; [L36] unsigned long int last_1_var_1_6 = 2; [L101] isInitial = 1 [L102] FCALL initially() [L103] COND TRUE 1 [L104] CALL updateLastVariables() [L94] last_1_var_1_6 = var_1_6 [L104] RET updateLastVariables() [L105] CALL updateVariables() [L66] var_1_7 = __VERIFIER_nondet_ulong() [L67] CALL assume_abort_if_not(var_1_7 >= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2, var_1_9=1000000000] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_7 >= 2147483647) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2, var_1_9=1000000000] [L68] CALL assume_abort_if_not(var_1_7 <= 4294967295) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2, var_1_9=1000000000] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_7 <= 4294967295) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2, var_1_9=1000000000] [L69] var_1_8 = __VERIFIER_nondet_ulong() [L70] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_9=1000000000] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_9=1000000000] [L71] CALL assume_abort_if_not(var_1_8 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647, var_1_9=1000000000] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_8 <= 2147483647) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647, var_1_9=1000000000] [L72] var_1_9 = __VERIFIER_nondet_ulong() [L73] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L74] CALL assume_abort_if_not(var_1_9 <= 4294967295) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_9 <= 4294967295) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=100, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L75] var_1_10 = __VERIFIER_nondet_ulong() [L76] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L77] CALL assume_abort_if_not(var_1_10 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_10 <= 4294967294) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=8, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L78] var_1_12 = __VERIFIER_nondet_char() [L79] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L80] CALL assume_abort_if_not(var_1_12 <= 32) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_12 <= 32) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=10, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L81] var_1_13 = __VERIFIER_nondet_char() [L82] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L83] CALL assume_abort_if_not(var_1_13 <= 31) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_13 <= 31) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=8, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L84] var_1_14 = __VERIFIER_nondet_char() [L85] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L86] CALL assume_abort_if_not(var_1_14 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_14 <= 63) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=0, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L87] var_1_16 = __VERIFIER_nondet_uchar() [L88] CALL assume_abort_if_not(var_1_16 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(var_1_16 >= 1) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L89] CALL assume_abort_if_not(var_1_16 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(var_1_16 <= 1) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_18=31/2, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L90] var_1_18 = __VERIFIER_nondet_double() [L91] CALL assume_abort_if_not((var_1_18 >= -922337.2036854765600e+13F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 9223372.036854765600e+12F && var_1_18 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not((var_1_18 >= -922337.2036854765600e+13F && var_1_18 <= -1.0e-20F) || (var_1_18 <= 9223372.036854765600e+12F && var_1_18 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=4, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=162/5, var_1_1=25, var_1_6=2, var_1_7=2147483647, var_1_8=2147483647] [L105] RET updateVariables() [L106] CALL step() [L40] var_1_15 = var_1_16 [L41] var_1_17 = var_1_18 [L42] COND TRUE \read(var_1_15) [L43] var_1_11 = (((var_1_12 + var_1_13) + var_1_14) - 50) [L45] COND TRUE \read(var_1_15) [L46] var_1_1 = (((((var_1_11 + var_1_11)) < (var_1_11)) ? ((var_1_11 + var_1_11)) : (var_1_11))) [L48] signed long int stepLocal_2 = (((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)); [L49] signed long int stepLocal_1 = (((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11)); [L50] unsigned long int stepLocal_0 = var_1_7 - var_1_8; [L51] COND TRUE last_1_var_1_6 != stepLocal_2 [L52] COND TRUE stepLocal_0 >= var_1_9 [L53] EXPR var_1_8 >> var_1_9 [L53] COND TRUE stepLocal_1 < (var_1_8 >> var_1_9) [L54] var_1_6 = var_1_8 [L106] RET step() [L107] CALL, EXPR property() [L97] EXPR (var_1_15 ? (var_1_1 == ((signed short int) (((((var_1_11 + var_1_11)) < (var_1_11)) ? ((var_1_11 + var_1_11)) : (var_1_11))))) : 1) && ((last_1_var_1_6 != ((((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)))) ? (((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_8))) [L97] EXPR (last_1_var_1_6 != ((((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)))) ? (((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_8)) [L97] EXPR ((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10)) [L97] EXPR var_1_8 >> var_1_9 [L97] EXPR ((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10)) [L97] EXPR (last_1_var_1_6 != ((((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)))) ? (((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_8)) [L97] EXPR (var_1_15 ? (var_1_1 == ((signed short int) (((((var_1_11 + var_1_11)) < (var_1_11)) ? ((var_1_11 + var_1_11)) : (var_1_11))))) : 1) && ((last_1_var_1_6 != ((((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)))) ? (((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_8))) [L97-L98] return ((((var_1_15 ? (var_1_1 == ((signed short int) (((((var_1_11 + var_1_11)) < (var_1_11)) ? ((var_1_11 + var_1_11)) : (var_1_11))))) : 1) && ((last_1_var_1_6 != ((((var_1_11) < (var_1_11)) ? (var_1_11) : (var_1_11)))) ? (((var_1_7 - var_1_8) >= var_1_9) ? ((((((var_1_11) > (var_1_11)) ? (var_1_11) : (var_1_11))) < (var_1_8 >> var_1_9)) ? (var_1_6 == ((unsigned long int) var_1_8)) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_10))) : (var_1_6 == ((unsigned long int) var_1_8)))) && (var_1_15 ? (var_1_11 == ((signed char) (((var_1_12 + var_1_13) + var_1_14) - 50))) : 1)) && (var_1_15 == ((unsigned char) var_1_16))) && (var_1_17 == ((double) var_1_18)) ; [L107] RET, EXPR property() [L107] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=0, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=6442450948, var_1_18=6442450948, var_1_1=0, var_1_6=2147483647, var_1_7=2147483647, var_1_8=2147483647, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_6=2, var_1_10=2147483647, var_1_11=0, var_1_12=19, var_1_13=31, var_1_14=0, var_1_15=1, var_1_16=1, var_1_17=6442450948, var_1_18=6442450948, var_1_1=0, var_1_6=2147483647, var_1_7=2147483647, var_1_8=2147483647, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 17, 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=35occurred 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 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 [2023-11-25 00:10:17,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91 --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 5e76bf897418c531679e53fa28b7c04d453b1c5b37fbed71b943af641f77aed6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:20,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:20,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-25 00:10:20,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:20,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:20,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:20,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:20,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:20,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:20,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:20,179 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:20,180 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:20,180 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:20,182 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:20,182 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:20,182 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:20,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:20,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:20,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:10:20,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:10:20,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:20,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:20,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:20,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:20,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:10:20,187 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:10:20,188 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:10:20,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:10:20,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:20,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:20,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:20,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:10:20,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:20,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:20,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:20,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:20,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:20,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:20,193 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:10:20,194 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:20,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:20,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:20,194 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:20,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:20,196 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_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e76bf897418c531679e53fa28b7c04d453b1c5b37fbed71b943af641f77aed6 [2023-11-25 00:10:20,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:20,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:20,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:20,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:20,666 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:20,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:24,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:24,268 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:24,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:24,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/e33181f96/7c4f6d77580140c89efcf8547eac6735/FLAG059a70469 [2023-11-25 00:10:24,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/data/e33181f96/7c4f6d77580140c89efcf8547eac6735 [2023-11-25 00:10:24,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:24,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:24,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:24,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:24,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:24,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778a8f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24, skipping insertion in model container [2023-11-25 00:10:24,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:24,521 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_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i[915,928] [2023-11-25 00:10:24,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:24,583 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:24,596 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_3585a45d-71a0-4804-974b-5871f0696f6c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-90.i[915,928] [2023-11-25 00:10:24,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:24,641 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:24,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24 WrapperNode [2023-11-25 00:10:24,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:24,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:24,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:24,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:24,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,675 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,703 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-11-25 00:10:24,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:24,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:24,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:24,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:24,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:24,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:24,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:24,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:24,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (1/1) ... [2023-11-25 00:10:24,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:24,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:24,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:10:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:10:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:10:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:24,972 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:24,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:25,370 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:25,493 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:25,503 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:10:25,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:25 BoogieIcfgContainer [2023-11-25 00:10:25,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:25,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:25,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:25,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:25,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:24" (1/3) ... [2023-11-25 00:10:25,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242a6fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:25, skipping insertion in model container [2023-11-25 00:10:25,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:24" (2/3) ... [2023-11-25 00:10:25,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242a6fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:25, skipping insertion in model container [2023-11-25 00:10:25,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:25" (3/3) ... [2023-11-25 00:10:25,523 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-90.i [2023-11-25 00:10:25,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:25,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:10:25,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:25,625 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;@5bf36124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:25,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:10:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-25 00:10:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:10:25,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:25,660 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:25,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:25,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1197207762, now seen corresponding path program 1 times [2023-11-25 00:10:25,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:25,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450135168] [2023-11-25 00:10:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:25,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:10:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:25,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:10:25,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:25,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:10:25,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-25 00:10:26,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:26,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450135168] [2023-11-25 00:10:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450135168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:10:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480590109] [2023-11-25 00:10:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:10:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:10:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:10:26,045 INFO L87 Difference]: Start difference. First operand has 45 states, 25 states have (on average 1.4) internal successors, (35), 26 states have internal predecessors, (35), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-25 00:10:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:26,093 INFO L93 Difference]: Finished difference Result 87 states and 153 transitions. [2023-11-25 00:10:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:10:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2023-11-25 00:10:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:26,105 INFO L225 Difference]: With dead ends: 87 [2023-11-25 00:10:26,106 INFO L226 Difference]: Without dead ends: 43 [2023-11-25 00:10:26,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:10:26,114 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:26,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:10:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-25 00:10:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-25 00:10:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-25 00:10:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2023-11-25 00:10:26,167 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 64 transitions. Word has length 103 [2023-11-25 00:10:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:26,168 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 64 transitions. [2023-11-25 00:10:26,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-25 00:10:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 64 transitions. [2023-11-25 00:10:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:10:26,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:26,172 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:26,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:26,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:26,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:26,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1966328236, now seen corresponding path program 1 times [2023-11-25 00:10:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182977833] [2023-11-25 00:10:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:26,380 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 [2023-11-25 00:10:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:26,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:10:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:26,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-25 00:10:26,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 36 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-25 00:10:37,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-25 00:10:49,606 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:49,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182977833] [2023-11-25 00:10:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182977833] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-25 00:10:49,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:10:49,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [30] total 40 [2023-11-25 00:10:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899797063] [2023-11-25 00:10:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:10:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:10:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2023-11-25 00:10:49,612 INFO L87 Difference]: Start difference. First operand 43 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:54,298 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2023-11-25 00:10:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-25 00:10:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 103 [2023-11-25 00:10:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:54,303 INFO L225 Difference]: With dead ends: 79 [2023-11-25 00:10:54,303 INFO L226 Difference]: Without dead ends: 77 [2023-11-25 00:10:54,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2023-11-25 00:10:54,307 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 115 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:54,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 202 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-25 00:10:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-25 00:10:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2023-11-25 00:10:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-25 00:10:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 95 transitions. [2023-11-25 00:10:54,341 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 95 transitions. Word has length 103 [2023-11-25 00:10:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:54,343 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 95 transitions. [2023-11-25 00:10:54,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 95 transitions. [2023-11-25 00:10:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:10:54,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:54,346 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:54,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:54,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:54,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:54,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash -191320874, now seen corresponding path program 1 times [2023-11-25 00:10:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679842189] [2023-11-25 00:10:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:54,553 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 [2023-11-25 00:10:54,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:54,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:10:54,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:54,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:10:54,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 160 proven. 6 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-25 00:10:54,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-25 00:10:54,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679842189] [2023-11-25 00:10:54,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679842189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:54,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [394016735] [2023-11-25 00:10:54,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:54,983 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:54,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:54,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:54,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-25 00:10:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:55,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:10:55,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-25 00:10:55,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:55,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [394016735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:55,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:10:55,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 6] total 13 [2023-11-25 00:10:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407561110] [2023-11-25 00:10:55,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:55,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:10:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:10:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:10:55,251 INFO L87 Difference]: Start difference. First operand 65 states and 95 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:55,338 INFO L93 Difference]: Finished difference Result 188 states and 274 transitions. [2023-11-25 00:10:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:10:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 103 [2023-11-25 00:10:55,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:55,355 INFO L225 Difference]: With dead ends: 188 [2023-11-25 00:10:55,355 INFO L226 Difference]: Without dead ends: 124 [2023-11-25 00:10:55,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:10:55,358 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 58 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:55,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 172 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:10:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-25 00:10:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 65. [2023-11-25 00:10:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-25 00:10:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 94 transitions. [2023-11-25 00:10:55,441 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 94 transitions. Word has length 103 [2023-11-25 00:10:55,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:55,442 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 94 transitions. [2023-11-25 00:10:55,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 94 transitions. [2023-11-25 00:10:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-25 00:10:55,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:55,456 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:55,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-11-25 00:10:55,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:55,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -134062572, now seen corresponding path program 1 times [2023-11-25 00:10:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205095297] [2023-11-25 00:10:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:55,861 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 [2023-11-25 00:10:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:55,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:10:55,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:10:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:55,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:10:55,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 160 proven. 6 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-11-25 00:10:56,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-25 00:10:56,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205095297] [2023-11-25 00:10:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205095297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857607436] [2023-11-25 00:10:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:56,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:56,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-25 00:10:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:56,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:10:56,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-25 00:10:57,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:57,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [857607436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:57,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:10:57,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 6] total 15 [2023-11-25 00:10:57,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980755942] [2023-11-25 00:10:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:57,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:10:57,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:57,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:10:57,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-25 00:10:57,264 INFO L87 Difference]: Start difference. First operand 65 states and 94 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:57,619 INFO L93 Difference]: Finished difference Result 172 states and 250 transitions. [2023-11-25 00:10:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:10:57,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 103 [2023-11-25 00:10:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:57,631 INFO L225 Difference]: With dead ends: 172 [2023-11-25 00:10:57,631 INFO L226 Difference]: Without dead ends: 108 [2023-11-25 00:10:57,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:10:57,638 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 34 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:57,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 212 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:10:57,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-25 00:10:57,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2023-11-25 00:10:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 55 states have internal predecessors, (62), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-25 00:10:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 146 transitions. [2023-11-25 00:10:57,676 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 146 transitions. Word has length 103 [2023-11-25 00:10:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:57,677 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 146 transitions. [2023-11-25 00:10:57,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-25 00:10:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 146 transitions. [2023-11-25 00:10:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-25 00:10:57,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:57,680 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:57,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-25 00:10:57,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-25 00:10:58,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:10:58,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:10:58,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -841647817, now seen corresponding path program 1 times [2023-11-25 00:10:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696663749] [2023-11-25 00:10:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:58,085 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 [2023-11-25 00:10:58,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:58,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:10:58,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3585a45d-71a0-4804-974b-5871f0696f6c/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-25 00:10:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:58,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-25 00:10:58,245 INFO L285 TraceCheckSpWp]: Computing forward predicates...