./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c --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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/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 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:53:23,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:53:24,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:53:24,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:53:24,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:53:24,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:53:24,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:53:24,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:53:24,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:53:24,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:53:24,111 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:53:24,111 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:53:24,112 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:53:24,114 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:53:24,114 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:53:24,115 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:53:24,115 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:53:24,116 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:53:24,116 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:53:24,117 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:53:24,117 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:53:24,118 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:53:24,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:53:24,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:53:24,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:53:24,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:53:24,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:53:24,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:53:24,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:53:24,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:53:24,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:53:24,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:53:24,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:53:24,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:53:24,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:53:24,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:53:24,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:24,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:53:24,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:53:24,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:53:24,127 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:53:24,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:53:24,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:53:24,128 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:53:24,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:53:24,129 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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d18364cf74a7e83a7d0637d6dc5303d99591a287435332871b1650f13e39eb3 [2023-11-12 00:53:24,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:53:24,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:53:24,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:53:24,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:53:24,490 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:53:24,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-11-12 00:53:27,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:27,912 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:27,913 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2023-11-12 00:53:27,923 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/data/e812b428b/ffb5cf018a32441591c21a09be69fd76/FLAGd62340c44 [2023-11-12 00:53:27,938 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/data/e812b428b/ffb5cf018a32441591c21a09be69fd76 [2023-11-12 00:53:27,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:27,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:27,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:27,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:27,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:27,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:27" (1/1) ... [2023-11-12 00:53:27,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7728fddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:27, skipping insertion in model container [2023-11-12 00:53:27,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:27" (1/1) ... [2023-11-12 00:53:28,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:28,282 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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-11-12 00:53:28,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:28,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:28,434 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_60e31729-c80f-4a9e-bd4a-4575c8e361b3/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c[7920,7933] [2023-11-12 00:53:28,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:28,463 WARN L672 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:28,470 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:28,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28 WrapperNode [2023-11-12 00:53:28,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:28,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:28,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:28,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:28,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,557 INFO L138 Inliner]: procedures = 17, calls = 199, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 360 [2023-11-12 00:53:28,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:28,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:28,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:28,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:28,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:28,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:28,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:28,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:28,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (1/1) ... [2023-11-12 00:53:28,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:28,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:28,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:28,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:53:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-12 00:53:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:53:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:53:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:53:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:53:28,917 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:53:28,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:53:29,824 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:53:29,860 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:53:29,860 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:53:29,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:29 BoogieIcfgContainer [2023-11-12 00:53:29,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:53:29,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:53:29,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:53:29,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:53:29,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:27" (1/3) ... [2023-11-12 00:53:29,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad756a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:29, skipping insertion in model container [2023-11-12 00:53:29,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:28" (2/3) ... [2023-11-12 00:53:29,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad756a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:53:29, skipping insertion in model container [2023-11-12 00:53:29,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:29" (3/3) ... [2023-11-12 00:53:29,878 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2023-11-12 00:53:29,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:53:29,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:53:29,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:53:29,970 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b924826, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:53:29,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:53:29,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:53:29,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:29,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:53:29,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:29,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1953555076, now seen corresponding path program 1 times [2023-11-12 00:53:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:30,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370625539] [2023-11-12 00:53:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:31,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370625539] [2023-11-12 00:53:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370625539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:53:31,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:53:31,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:53:31,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829555319] [2023-11-12 00:53:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:53:31,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:53:31,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:53:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:53:31,351 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:31,453 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-11-12 00:53:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:53:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:53:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:31,464 INFO L225 Difference]: With dead ends: 23 [2023-11-12 00:53:31,464 INFO L226 Difference]: Without dead ends: 14 [2023-11-12 00:53:31,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:53:31,473 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:31,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:53:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-12 00:53:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2023-11-12 00:53:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-12 00:53:31,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2023-11-12 00:53:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:31,512 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-12 00:53:31,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-12 00:53:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:53:31,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:31,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:53:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:53:31,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:31,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1000383431, now seen corresponding path program 1 times [2023-11-12 00:53:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307785849] [2023-11-12 00:53:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:31,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:32,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307785849] [2023-11-12 00:53:32,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307785849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:53:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516766263] [2023-11-12 00:53:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:32,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:32,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:32,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:53:32,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:53:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:32,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 00:53:32,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:33,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516766263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:33,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1979505826] [2023-11-12 00:53:33,170 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:53:33,170 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:53:33,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:53:33,179 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:53:33,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:53:39,819 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:53:40,573 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '125#(and (or (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 1) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0)) (<= 1 |#StackHeapBarrier|) (<= 0 ~Id_MCDC_93~0) (= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1| 0) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2023-11-12 00:53:40,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:53:40,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:53:40,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-12 00:53:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269369678] [2023-11-12 00:53:40,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:53:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:53:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:40,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:53:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:53:40,578 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:40,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:40,858 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-11-12 00:53:40,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 00:53:40,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:53:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:40,860 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:53:40,861 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:53:40,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:53:40,863 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:40,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 22 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:53:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:53:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-12 00:53:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-11-12 00:53:40,874 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2023-11-12 00:53:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:40,875 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-11-12 00:53:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-11-12 00:53:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:53:40,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:53:40,877 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2023-11-12 00:53:40,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:53:41,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 00:53:41,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:53:41,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:53:41,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1319055728, now seen corresponding path program 2 times [2023-11-12 00:53:41,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:53:41,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367421275] [2023-11-12 00:53:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:53:41,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:53:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:53:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:53:41,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:53:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367421275] [2023-11-12 00:53:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367421275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:53:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322584088] [2023-11-12 00:53:41,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:53:41,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:41,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:41,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:53:41,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:53:44,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:53:44,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:53:44,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-12 00:53:44,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:53:44,283 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:53:44,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2023-11-12 00:53:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 00:53:44,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:53:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 00:53:45,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322584088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:53:45,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [457350052] [2023-11-12 00:53:45,215 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:53:45,215 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:53:45,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:53:45,216 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:53:45,217 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:53:50,076 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:53:50,800 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '349#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~Id_MCDC_93~0) (= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 2 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 1) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0))' at error location [2023-11-12 00:53:50,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:53:50,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:53:50,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2023-11-12 00:53:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141925383] [2023-11-12 00:53:50,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:53:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 00:53:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:53:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 00:53:50,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-11-12 00:53:50,804 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:53:51,834 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-12 00:53:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-12 00:53:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-12 00:53:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:53:51,835 INFO L225 Difference]: With dead ends: 31 [2023-11-12 00:53:51,835 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:53:51,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=434, Invalid=1728, Unknown=0, NotChecked=0, Total=2162 [2023-11-12 00:53:51,838 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:53:51,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 00:53:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:53:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:53:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:53:51,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2023-11-12 00:53:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:53:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:53:51,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:53:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:53:51,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:53:51,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:53:51,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:53:52,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:53:52,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:53:52,057 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 133 225) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2023-11-12 00:53:52,058 INFO L899 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2023-11-12 00:53:52,059 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2023-11-12 00:53:52,059 INFO L899 garLoopResultBuilder]: For program point L175(lines 167 223) no Hoare annotation was computed. [2023-11-12 00:53:52,061 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-11-12 00:53:52,063 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:53:52,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:53:52 BoogieIcfgContainer [2023-11-12 00:53:52,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:53:52,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:53:52,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:53:52,068 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:53:52,068 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:53:29" (3/4) ... [2023-11-12 00:53:52,070 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:53:52,091 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-12 00:53:52,092 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-12 00:53:52,093 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 00:53:52,094 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:53:52,096 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:53:52,339 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:53:52,339 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:53:52,339 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:53:52,340 INFO L158 Benchmark]: Toolchain (without parser) took 24397.33ms. Allocated memory was 161.5MB in the beginning and 796.9MB in the end (delta: 635.4MB). Free memory was 121.5MB in the beginning and 710.4MB in the end (delta: -588.8MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,340 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 65.8MB in the beginning and 65.5MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:53:52,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.31ms. Allocated memory is still 161.5MB. Free memory was 121.5MB in the beginning and 104.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,341 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.35ms. Allocated memory is still 161.5MB. Free memory was 104.7MB in the beginning and 101.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,341 INFO L158 Benchmark]: Boogie Preprocessor took 54.13ms. Allocated memory is still 161.5MB. Free memory was 101.3MB in the beginning and 97.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,341 INFO L158 Benchmark]: RCFGBuilder took 1250.27ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 97.7MB in the beginning and 175.8MB in the end (delta: -78.1MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,341 INFO L158 Benchmark]: TraceAbstraction took 22200.29ms. Allocated memory was 211.8MB in the beginning and 796.9MB in the end (delta: 585.1MB). Free memory was 174.8MB in the beginning and 724.0MB in the end (delta: -549.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,342 INFO L158 Benchmark]: Witness Printer took 271.78ms. Allocated memory is still 796.9MB. Free memory was 724.0MB in the beginning and 710.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:53:52,344 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory was 65.8MB in the beginning and 65.5MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.31ms. Allocated memory is still 161.5MB. Free memory was 121.5MB in the beginning and 104.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.35ms. Allocated memory is still 161.5MB. Free memory was 104.7MB in the beginning and 101.3MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.13ms. Allocated memory is still 161.5MB. Free memory was 101.3MB in the beginning and 97.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1250.27ms. Allocated memory was 161.5MB in the beginning and 211.8MB in the end (delta: 50.3MB). Free memory was 97.7MB in the beginning and 175.8MB in the end (delta: -78.1MB). Peak memory consumption was 50.5MB. Max. memory is 16.1GB. * TraceAbstraction took 22200.29ms. Allocated memory was 211.8MB in the beginning and 796.9MB in the end (delta: 585.1MB). Free memory was 174.8MB in the beginning and 724.0MB in the end (delta: -549.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Witness Printer took 271.78ms. Allocated memory is still 796.9MB. Free memory was 724.0MB in the beginning and 710.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. 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 - PositiveResult [Line: 193]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.1s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 9 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 13 QuantifiedInterpolants, 1056 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1101 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 33/117 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 00:53:52,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e31729-c80f-4a9e-bd4a-4575c8e361b3/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 Writing output log to file Ultimate.log Result: TRUE