./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce5a3e3df606615ed4d80d35c56de0474302d935a3c45f08f5f1ded2e108362a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:22,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:22,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:47:22,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:22,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:22,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:22,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:22,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:22,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:22,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:22,546 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:22,547 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:22,548 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:22,549 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:47:22,550 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:22,550 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:22,551 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:47:22,551 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:47:22,552 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:22,552 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:47:22,553 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:47:22,553 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:47:22,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:22,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:47:22,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:22,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:22,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:22,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:22,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:47:22,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:22,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:47:22,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:22,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:47:22,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:22,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:22,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:22,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:22,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:22,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:22,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:47:22,561 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:47:22,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:47:22,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:47:22,562 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:22,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:22,563 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_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5a3e3df606615ed4d80d35c56de0474302d935a3c45f08f5f1ded2e108362a [2023-11-12 00:47:22,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:22,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:22,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:22,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:22,934 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:22,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:26,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:26,526 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:26,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:26,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/bde737937/3a42097be2374234b01d3245b26a31c6/FLAG0aaad4109 [2023-11-12 00:47:26,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/bde737937/3a42097be2374234b01d3245b26a31c6 [2023-11-12 00:47:26,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:26,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:26,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:26,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:26,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:26,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5767455e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26, skipping insertion in model container [2023-11-12 00:47:26,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:26,751 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_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i[919,932] [2023-11-12 00:47:26,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:26,840 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:26,853 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_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i[919,932] [2023-11-12 00:47:26,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:26,926 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:26,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26 WrapperNode [2023-11-12 00:47:26,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:26,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:26,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:26,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:26,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,988 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 185 [2023-11-12 00:47:26,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:26,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:26,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:26,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:26,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:27,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:27,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:27,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:27,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:27,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:27,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:27,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:47:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:47:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:47:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:27,274 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:27,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:27,932 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:28,349 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:28,349 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:47:28,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:28 BoogieIcfgContainer [2023-11-12 00:47:28,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:28,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:28,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:28,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:28,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:26" (1/3) ... [2023-11-12 00:47:28,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e51d14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:28, skipping insertion in model container [2023-11-12 00:47:28,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26" (2/3) ... [2023-11-12 00:47:28,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e51d14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:28, skipping insertion in model container [2023-11-12 00:47:28,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:28" (3/3) ... [2023-11-12 00:47:28,369 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:28,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:28,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:47:28,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:28,474 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;@25131c33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:28,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:47:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-12 00:47:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 00:47:28,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:28,497 INFO L195 NwaCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:28,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:47:28,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2005357744, now seen corresponding path program 1 times [2023-11-12 00:47:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:47:28,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497126339] [2023-11-12 00:47:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:47:28,867 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:47:28,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788726556] [2023-11-12 00:47:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:28,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:47:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:28,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:47:28,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:47:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-11-12 00:47:29,399 WARN L124 FreeRefinementEngine]: Strategy SIFA_TAIPAN was unsuccessful and could not determine trace feasibility [2023-11-12 00:47:29,402 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-11-12 00:47:29,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:47:29,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:47:29,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:47:29,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:47:29,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:47:29,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:47:29 BoogieIcfgContainer [2023-11-12 00:47:29,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:47:29,688 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:47:29,689 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:47:29,689 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:47:29,690 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:28" (3/4) ... [2023-11-12 00:47:29,693 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:47:29,694 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:47:29,697 INFO L158 Benchmark]: Toolchain (without parser) took 3132.87ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 107.9MB in the beginning and 112.9MB in the end (delta: -5.0MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,697 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:47:29,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.44ms. Allocated memory is still 140.5MB. Free memory was 107.4MB in the beginning and 92.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,700 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.07ms. Allocated memory is still 140.5MB. Free memory was 92.3MB in the beginning and 88.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,708 INFO L158 Benchmark]: Boogie Preprocessor took 42.08ms. Allocated memory is still 140.5MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,708 INFO L158 Benchmark]: RCFGBuilder took 1320.67ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 86.5MB in the beginning and 93.4MB in the end (delta: -7.0MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,709 INFO L158 Benchmark]: TraceAbstraction took 1328.24ms. Allocated memory is still 169.9MB. Free memory was 92.2MB in the beginning and 112.9MB in the end (delta: -20.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:47:29,710 INFO L158 Benchmark]: Witness Printer took 5.84ms. Allocated memory is still 169.9MB. Free memory was 112.9MB in the beginning and 112.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:47:29,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.44ms. Allocated memory is still 140.5MB. Free memory was 107.4MB in the beginning and 92.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.07ms. Allocated memory is still 140.5MB. Free memory was 92.3MB in the beginning and 88.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.08ms. Allocated memory is still 140.5MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1320.67ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 86.5MB in the beginning and 93.4MB in the end (delta: -7.0MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1328.24ms. Allocated memory is still 169.9MB. Free memory was 92.2MB in the beginning and 112.9MB in the end (delta: -20.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.84ms. Allocated memory is still 169.9MB. Free memory was 112.9MB in the beginning and 112.9MB in the end (delta: 2.0kB). 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: unable to decide satisfiability of path constraint, overapproximation of someBinaryFLOATComparisonOperation at line 124, overapproximation of shiftLeft at line 76, overapproximation of someBinaryArithmeticDOUBLEoperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 77. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 1000; [L23] unsigned char var_1_5 = 1; [L24] unsigned char var_1_6 = 0; [L25] float var_1_7 = 0.6; [L26] unsigned long int var_1_8 = 32; [L27] unsigned long int var_1_9 = 32; [L28] float var_1_11 = 5.5; [L29] unsigned long int var_1_12 = 128; [L30] unsigned char var_1_13 = 16; [L31] unsigned char var_1_14 = 0; [L32] unsigned long int var_1_15 = 8; [L33] unsigned char var_1_16 = 0; [L34] unsigned char var_1_17 = 0; [L35] double var_1_18 = 1.8; [L36] double var_1_19 = 4.5; [L37] double var_1_20 = 15.5; [L38] signed char var_1_21 = -5; [L39] signed char var_1_27 = 4; [L40] float var_1_28 = 8.95; [L41] signed short int var_1_30 = -256; [L42] unsigned char var_1_31 = 0; [L43] unsigned char var_1_35 = 1; [L44] unsigned char var_1_36 = 0; [L45] unsigned char var_1_37 = 0; [L46] unsigned char var_1_38 = 1; [L47] unsigned short int var_1_39 = 4; [L48] unsigned char var_1_41 = 10; [L49] unsigned long int last_1_var_1_1 = 1000; [L50] unsigned char last_1_var_1_5 = 1; [L51] unsigned long int last_1_var_1_12 = 128; [L52] unsigned char last_1_var_1_13 = 16; [L53] unsigned long int last_1_var_1_15 = 8; [L180] isInitial = 1 [L181] FCALL initially() [L182] COND TRUE 1 [L183] CALL updateLastVariables() [L169] last_1_var_1_1 = var_1_1 [L170] last_1_var_1_5 = var_1_5 [L171] last_1_var_1_12 = var_1_12 [L172] last_1_var_1_13 = var_1_13 [L173] last_1_var_1_15 = var_1_15 [L183] RET updateLastVariables() [L184] CALL updateVariables() [L129] var_1_6 = __VERIFIER_nondet_uchar() [L130] CALL assume_abort_if_not(var_1_6 >= 0) [L20] COND FALSE !(!cond) [L130] RET assume_abort_if_not(var_1_6 >= 0) [L131] CALL assume_abort_if_not(var_1_6 <= 0) [L20] COND FALSE !(!cond) [L131] RET assume_abort_if_not(var_1_6 <= 0) [L132] var_1_8 = __VERIFIER_nondet_ulong() [L133] CALL assume_abort_if_not(var_1_8 >= 0) [L20] COND FALSE !(!cond) [L133] RET assume_abort_if_not(var_1_8 >= 0) [L134] CALL assume_abort_if_not(var_1_8 <= 4294967295) [L20] COND FALSE !(!cond) [L134] RET assume_abort_if_not(var_1_8 <= 4294967295) [L135] CALL assume_abort_if_not(var_1_8 != 0) [L20] COND FALSE !(!cond) [L135] RET assume_abort_if_not(var_1_8 != 0) [L136] var_1_9 = __VERIFIER_nondet_ulong() [L137] CALL assume_abort_if_not(var_1_9 >= 0) [L20] COND FALSE !(!cond) [L137] RET assume_abort_if_not(var_1_9 >= 0) [L138] CALL assume_abort_if_not(var_1_9 <= 4294967295) [L20] COND FALSE !(!cond) [L138] RET assume_abort_if_not(var_1_9 <= 4294967295) [L139] CALL assume_abort_if_not(var_1_9 != 0) [L20] COND FALSE !(!cond) [L139] RET assume_abort_if_not(var_1_9 != 0) [L140] var_1_11 = __VERIFIER_nondet_float() [L141] CALL assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L141] RET assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) [L142] var_1_14 = __VERIFIER_nondet_uchar() [L143] CALL assume_abort_if_not(var_1_14 >= 0) [L20] COND FALSE !(!cond) [L143] RET assume_abort_if_not(var_1_14 >= 0) [L144] CALL assume_abort_if_not(var_1_14 <= 254) [L20] COND FALSE !(!cond) [L144] RET assume_abort_if_not(var_1_14 <= 254) [L145] var_1_17 = __VERIFIER_nondet_uchar() [L146] CALL assume_abort_if_not(var_1_17 >= 0) [L20] COND FALSE !(!cond) [L146] RET assume_abort_if_not(var_1_17 >= 0) [L147] CALL assume_abort_if_not(var_1_17 <= 0) [L20] COND FALSE !(!cond) [L147] RET assume_abort_if_not(var_1_17 <= 0) [L148] var_1_19 = __VERIFIER_nondet_double() [L149] CALL assume_abort_if_not((var_1_19 >= -461168.6018427382800e+13F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L149] RET assume_abort_if_not((var_1_19 >= -461168.6018427382800e+13F && var_1_19 <= -1.0e-20F) || (var_1_19 <= 4611686.018427382800e+12F && var_1_19 >= 1.0e-20F )) [L150] var_1_20 = __VERIFIER_nondet_double() [L151] CALL assume_abort_if_not((var_1_20 >= 0.0F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 4611686.018427382800e+12F && var_1_20 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L151] RET assume_abort_if_not((var_1_20 >= 0.0F && var_1_20 <= -1.0e-20F) || (var_1_20 <= 4611686.018427382800e+12F && var_1_20 >= 1.0e-20F )) [L152] var_1_27 = __VERIFIER_nondet_char() [L153] CALL assume_abort_if_not(var_1_27 >= -127) [L20] COND FALSE !(!cond) [L153] RET assume_abort_if_not(var_1_27 >= -127) [L154] CALL assume_abort_if_not(var_1_27 <= 126) [L20] COND FALSE !(!cond) [L154] RET assume_abort_if_not(var_1_27 <= 126) [L155] var_1_35 = __VERIFIER_nondet_uchar() [L156] CALL assume_abort_if_not(var_1_35 >= 1) [L20] COND FALSE !(!cond) [L156] RET assume_abort_if_not(var_1_35 >= 1) [L157] CALL assume_abort_if_not(var_1_35 <= 1) [L20] COND FALSE !(!cond) [L157] RET assume_abort_if_not(var_1_35 <= 1) [L158] var_1_36 = __VERIFIER_nondet_uchar() [L159] CALL assume_abort_if_not(var_1_36 >= 1) [L20] COND FALSE !(!cond) [L159] RET assume_abort_if_not(var_1_36 >= 1) [L160] CALL assume_abort_if_not(var_1_36 <= 1) [L20] COND FALSE !(!cond) [L160] RET assume_abort_if_not(var_1_36 <= 1) [L161] var_1_39 = __VERIFIER_nondet_ushort() [L162] CALL assume_abort_if_not(var_1_39 >= 0) [L20] COND FALSE !(!cond) [L162] RET assume_abort_if_not(var_1_39 >= 0) [L163] CALL assume_abort_if_not(var_1_39 <= 15) [L20] COND FALSE !(!cond) [L163] RET assume_abort_if_not(var_1_39 <= 15) [L164] var_1_41 = __VERIFIER_nondet_uchar() [L165] CALL assume_abort_if_not(var_1_41 >= 0) [L20] COND FALSE !(!cond) [L165] RET assume_abort_if_not(var_1_41 >= 0) [L166] CALL assume_abort_if_not(var_1_41 <= 63) [L20] COND FALSE !(!cond) [L166] RET assume_abort_if_not(var_1_41 <= 63) [L184] RET updateVariables() [L185] CALL step() [L57] signed long int stepLocal_1 = last_1_var_1_13; [L58] signed long int stepLocal_0 = last_1_var_1_13; [L59] COND FALSE !(stepLocal_1 < ((- last_1_var_1_12) * 64)) [L70] COND FALSE !(\read(var_1_17)) [L75] COND FALSE !(! var_1_6) [L90] unsigned long int stepLocal_2 = last_1_var_1_15 + last_1_var_1_1; [L91] COND TRUE last_1_var_1_13 <= stepLocal_2 [L92] var_1_5 = ((last_1_var_1_15 == last_1_var_1_13) && var_1_6) [L96] unsigned char stepLocal_3 = var_1_5; [L97] COND FALSE !(stepLocal_3 || var_1_17) [L100] var_1_13 = ((((var_1_14) < 0 ) ? -(var_1_14) : (var_1_14))) [L101] var_1_30 = ((((var_1_13) < 0 ) ? -(var_1_13) : (var_1_13))) [L102] var_1_16 = (var_1_6 && var_1_17) [L103] COND FALSE !(\read(var_1_5)) [L106] COND FALSE !((((((var_1_20 - var_1_20)) < (var_1_20)) ? ((var_1_20 - var_1_20)) : (var_1_20))) > (var_1_11 * 31.3)) [L111] var_1_31 = (var_1_35 && ((var_1_13 > var_1_13) && (! var_1_36))) [L113] COND FALSE !((var_1_15 + (var_1_15 * var_1_13)) <= ((32u / var_1_8) / var_1_9)) [L118] var_1_7 = var_1_11 [L120] var_1_28 = var_1_20 [L121] COND FALSE !((var_1_18 / 25.4f) >= ((((var_1_7) < 0 ) ? -(var_1_7) : (var_1_7)))) [L124] COND FALSE !(var_1_7 <= (- (32.8f + var_1_7))) [L185] RET step() [L186] CALL, EXPR property() [L176-L177] return ((((((((last_1_var_1_13 < ((- last_1_var_1_12) * 64)) ? (last_1_var_1_5 ? (var_1_1 == ((unsigned long int) ((((last_1_var_1_12) < 0 ) ? -(last_1_var_1_12) : (last_1_var_1_12))))) : ((-10000000 < last_1_var_1_13) ? (var_1_1 == ((unsigned long int) (((((((last_1_var_1_12) > (5u)) ? (last_1_var_1_12) : (5u))) < 0 ) ? -((((last_1_var_1_12) > (5u)) ? (last_1_var_1_12) : (5u))) : ((((last_1_var_1_12) > (5u)) ? (last_1_var_1_12) : (5u))))))) : (var_1_1 == ((unsigned long int) 50u)))) : 1) && ((last_1_var_1_13 <= (last_1_var_1_15 + last_1_var_1_1)) ? (var_1_5 == ((unsigned char) ((last_1_var_1_15 == last_1_var_1_13) && var_1_6))) : (var_1_5 == ((unsigned char) var_1_6)))) && (((var_1_15 + (var_1_15 * var_1_13)) <= ((32u / var_1_8) / var_1_9)) ? ((1.25f < var_1_18) ? (var_1_7 == ((float) 1000000.1f)) : 1) : (var_1_7 == ((float) var_1_11)))) && ((var_1_7 <= (- (32.8f + var_1_7))) ? (var_1_12 == ((unsigned long int) last_1_var_1_12)) : 1)) && (var_1_13 == ((unsigned char) ((((var_1_14) < 0 ) ? -(var_1_14) : (var_1_14)))))) && (var_1_5 ? (var_1_15 == ((unsigned long int) ((((var_1_1) > ((var_1_13 + ((((var_1_14) < 0 ) ? -(var_1_14) : (var_1_14)))))) ? (var_1_1) : ((var_1_13 + ((((var_1_14) < 0 ) ? -(var_1_14) : (var_1_14))))))))) : 1)) && (var_1_16 == ((unsigned char) (var_1_6 && var_1_17)))) && ((var_1_5 || var_1_17) ? (var_1_18 == ((double) ((((((var_1_19) < 0 ) ? -(var_1_19) : (var_1_19))) + var_1_20) - 63.6))) : 1) ; [L186] RET, EXPR property() [L186] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 25, 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=47occurred 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-12 00:47:29,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce5a3e3df606615ed4d80d35c56de0474302d935a3c45f08f5f1ded2e108362a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:32,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:33,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-12 00:47:33,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:33,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:33,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:33,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:33,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:33,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:33,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:33,123 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:33,124 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:33,124 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:33,126 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:33,127 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:33,127 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:33,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:33,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:47:33,129 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:33,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:33,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:33,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:47:33,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:33,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:47:33,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:47:33,134 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:47:33,134 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:47:33,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:33,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:47:33,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:33,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:33,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:47:33,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:33,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:33,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:33,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:33,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:47:33,140 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:47:33,140 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:47:33,141 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:47:33,142 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:33,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:33,142 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_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5a3e3df606615ed4d80d35c56de0474302d935a3c45f08f5f1ded2e108362a [2023-11-12 00:47:33,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:33,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:33,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:33,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:33,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:33,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:36,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:37,340 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:37,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:37,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/3fc5d38b8/925b7a1f7d6442c4b76efe0bcad72713/FLAG7332e9a4c [2023-11-12 00:47:37,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/data/3fc5d38b8/925b7a1f7d6442c4b76efe0bcad72713 [2023-11-12 00:47:37,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:37,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:37,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:37,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:37,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:37,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:37,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12075457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37, skipping insertion in model container [2023-11-12 00:47:37,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:37,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:37,663 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_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i[919,932] [2023-11-12 00:47:37,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:37,752 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:37,766 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_ba9af4ec-c721-4279-bea2-f99cceb13084/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i[919,932] [2023-11-12 00:47:37,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:37,849 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:37,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37 WrapperNode [2023-11-12 00:47:37,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:37,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:37,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:37,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:37,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:37,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:37,986 INFO L138 Inliner]: procedures = 27, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2023-11-12 00:47:37,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:37,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:37,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:37,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:38,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,006 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,006 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:38,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:38,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:38,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:38,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (1/1) ... [2023-11-12 00:47:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:38,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:38,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:38,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:47:38,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:47:38,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:47:38,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:38,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:38,281 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:38,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:50,064 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:50,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:50,072 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:47:50,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:50 BoogieIcfgContainer [2023-11-12 00:47:50,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:50,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:50,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:50,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:50,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:37" (1/3) ... [2023-11-12 00:47:50,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@924e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:50, skipping insertion in model container [2023-11-12 00:47:50,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:37" (2/3) ... [2023-11-12 00:47:50,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@924e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:50, skipping insertion in model container [2023-11-12 00:47:50,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:50" (3/3) ... [2023-11-12 00:47:50,086 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-85.i [2023-11-12 00:47:50,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:50,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:47:50,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:50,170 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;@7cedd042, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:50,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:47:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 52 states have internal predecessors, (74), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-12 00:47:50,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-12 00:47:50,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:50,195 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:50,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:47:50,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1599250263, now seen corresponding path program 1 times [2023-11-12 00:47:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727623379] [2023-11-12 00:47:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:50,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:47:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:50,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:47:50,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 00:47:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:52,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:47:52,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2023-11-12 00:47:52,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:52,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:52,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727623379] [2023-11-12 00:47:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727623379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:52,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:47:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237157776] [2023-11-12 00:47:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:52,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:47:52,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:47:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:47:52,262 INFO L87 Difference]: Start difference. First operand has 79 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 52 states have internal predecessors, (74), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 00:47:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:52,338 INFO L93 Difference]: Finished difference Result 151 states and 267 transitions. [2023-11-12 00:47:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:47:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2023-11-12 00:47:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:52,350 INFO L225 Difference]: With dead ends: 151 [2023-11-12 00:47:52,351 INFO L226 Difference]: Without dead ends: 75 [2023-11-12 00:47:52,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:47:52,359 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:52,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:47:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-12 00:47:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-12 00:47:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-12 00:47:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 116 transitions. [2023-11-12 00:47:52,418 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 116 transitions. Word has length 161 [2023-11-12 00:47:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:52,419 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 116 transitions. [2023-11-12 00:47:52,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-11-12 00:47:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 116 transitions. [2023-11-12 00:47:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-12 00:47:52,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:52,426 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:52,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-12 00:47:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:47:52,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:47:52,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:52,641 INFO L85 PathProgramCache]: Analyzing trace with hash -591991501, now seen corresponding path program 1 times [2023-11-12 00:47:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:52,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659311803] [2023-11-12 00:47:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:52,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:47:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:52,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:47:52,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 00:47:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:54,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:47:54,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-12 00:47:56,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:56,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659311803] [2023-11-12 00:47:56,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659311803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:56,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:56,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:47:56,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86160772] [2023-11-12 00:47:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:47:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:47:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:47:56,205 INFO L87 Difference]: Start difference. First operand 75 states and 116 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-12 00:47:59,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:47:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:59,686 INFO L93 Difference]: Finished difference Result 147 states and 229 transitions. [2023-11-12 00:47:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:47:59,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 161 [2023-11-12 00:47:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:59,718 INFO L225 Difference]: With dead ends: 147 [2023-11-12 00:47:59,719 INFO L226 Difference]: Without dead ends: 75 [2023-11-12 00:47:59,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:47:59,722 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 107 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:59,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 132 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 00:47:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-12 00:47:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-12 00:47:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-12 00:47:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 115 transitions. [2023-11-12 00:47:59,748 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 115 transitions. Word has length 161 [2023-11-12 00:47:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:59,751 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 115 transitions. [2023-11-12 00:47:59,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-12 00:47:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 115 transitions. [2023-11-12 00:47:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-12 00:47:59,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:59,761 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:59,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:47:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:47:59,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:47:59,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1802004876, now seen corresponding path program 1 times [2023-11-12 00:47:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:59,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48695529] [2023-11-12 00:47:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:59,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:47:59,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:59,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:48:00,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 00:48:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:01,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:48:01,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 118 proven. 69 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2023-11-12 00:48:02,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:48:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-11-12 00:48:03,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48695529] [2023-11-12 00:48:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48695529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:48:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [535573612] [2023-11-12 00:48:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:48:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:48:03,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:48:03,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-12 00:48:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:48:06,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-12 00:48:09,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [535573612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:09,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:48:09,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-12 00:48:09,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68915327] [2023-11-12 00:48:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:48:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:48:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:48:09,017 INFO L87 Difference]: Start difference. First operand 75 states and 115 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-12 00:48:11,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:48:13,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:48:15,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:48:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:15,781 INFO L93 Difference]: Finished difference Result 220 states and 340 transitions. [2023-11-12 00:48:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:48:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 162 [2023-11-12 00:48:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:15,813 INFO L225 Difference]: With dead ends: 220 [2023-11-12 00:48:15,813 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 00:48:15,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:48:15,815 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 81 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:15,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 427 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-12 00:48:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 00:48:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2023-11-12 00:48:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-12 00:48:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 201 transitions. [2023-11-12 00:48:15,859 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 201 transitions. Word has length 162 [2023-11-12 00:48:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:15,861 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 201 transitions. [2023-11-12 00:48:15,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-11-12 00:48:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 201 transitions. [2023-11-12 00:48:15,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-12 00:48:15,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:15,864 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:15,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:16,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-12 00:48:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:48:16,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:48:16,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1481845170, now seen corresponding path program 1 times [2023-11-12 00:48:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:16,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505337943] [2023-11-12 00:48:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:16,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:48:16,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:16,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:48:16,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:48:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:17,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:48:17,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 118 proven. 69 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2023-11-12 00:48:19,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:48:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 3 proven. 69 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-11-12 00:48:19,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:19,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505337943] [2023-11-12 00:48:19,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505337943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:48:19,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26430065] [2023-11-12 00:48:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:48:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:48:19,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:48:19,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba9af4ec-c721-4279-bea2-f99cceb13084/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process