./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/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_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/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_531b2fa5-4b05-4b54-957e-c92e2b9deaff/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 d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:36,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:37,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:00:37,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:37,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:37,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:37,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:37,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:37,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:37,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:37,052 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:37,052 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:37,053 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:37,054 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:00:37,054 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:37,055 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:37,056 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:00:37,056 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:00:37,057 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:37,058 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:00:37,059 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:00:37,059 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:00:37,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:37,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:00:37,062 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:37,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:37,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:37,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:37,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:00:37,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:37,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:00:37,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:37,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:00:37,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:37,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:37,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:37,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:37,072 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:37,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:37,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:00:37,073 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:00:37,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:00:37,075 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:00:37,075 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:37,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:37,076 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_531b2fa5-4b05-4b54-957e-c92e2b9deaff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 [2023-11-12 01:00:37,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:37,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:37,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:37,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:37,381 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:37,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i [2023-11-12 01:00:40,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:00:40,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:00:40,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i [2023-11-12 01:00:40,687 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/data/d441500bb/d187f48d97494f65b9b01ac258887b55/FLAG1a17a2075 [2023-11-12 01:00:40,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/data/d441500bb/d187f48d97494f65b9b01ac258887b55 [2023-11-12 01:00:40,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:00:40,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:00:40,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:40,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:00:40,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:00:40,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:40" (1/1) ... [2023-11-12 01:00:40,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb6cc0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:40, skipping insertion in model container [2023-11-12 01:00:40,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:00:40" (1/1) ... [2023-11-12 01:00:40,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:00:40,943 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_531b2fa5-4b05-4b54-957e-c92e2b9deaff/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i[915,928] [2023-11-12 01:00:40,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:40,993 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:00:41,010 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_531b2fa5-4b05-4b54-957e-c92e2b9deaff/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i[915,928] [2023-11-12 01:00:41,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:00:41,067 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:00:41,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41 WrapperNode [2023-11-12 01:00:41,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:00:41,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:41,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:00:41,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:00:41,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,120 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-11-12 01:00:41,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:00:41,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:00:41,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:00:41,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:00:41,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:00:41,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:00:41,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:00:41,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:00:41,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (1/1) ... [2023-11-12 01:00:41,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:41,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:41,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:00:41,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:00:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 01:00:41,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 01:00:41,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:00:41,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:00:41,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:00:41,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:00:41,375 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:41,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:41,772 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:42,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:42,072 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 01:00:42,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:42 BoogieIcfgContainer [2023-11-12 01:00:42,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:42,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:42,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:42,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:42,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:00:40" (1/3) ... [2023-11-12 01:00:42,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e69284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:42, skipping insertion in model container [2023-11-12 01:00:42,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:00:41" (2/3) ... [2023-11-12 01:00:42,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e69284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:42, skipping insertion in model container [2023-11-12 01:00:42,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:42" (3/3) ... [2023-11-12 01:00:42,093 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-23.i [2023-11-12 01:00:42,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:42,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:00:42,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:42,191 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;@c699fb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:42,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:00:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 01:00:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 01:00:42,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:42,216 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:42,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:00:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1543330031, now seen corresponding path program 1 times [2023-11-12 01:00:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447737264] [2023-11-12 01:00:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-12 01:00:44,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447737264] [2023-11-12 01:00:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447737264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:00:44,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257970145] [2023-11-12 01:00:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:00:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:00:44,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:00:44,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:00:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:44,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 01:00:44,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:00:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-12 01:00:50,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:00:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-12 01:00:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257970145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:00:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1146790757] [2023-11-12 01:00:56,410 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-11-12 01:00:56,410 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:00:56,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:00:56,418 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:00:56,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:00:59,496 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 80 for LOIs [2023-11-12 01:00:59,520 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:01:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1146790757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 01:01:02,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 6, 5] total 25 [2023-11-12 01:01:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683586103] [2023-11-12 01:01:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:02,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 01:01:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:02,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 01:01:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-11-12 01:01:02,213 INFO L87 Difference]: Start difference. First operand has 30 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-12 01:01:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:04,792 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2023-11-12 01:01:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-12 01:01:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 53 [2023-11-12 01:01:04,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:04,807 INFO L225 Difference]: With dead ends: 98 [2023-11-12 01:01:04,807 INFO L226 Difference]: Without dead ends: 69 [2023-11-12 01:01:04,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2023-11-12 01:01:04,816 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:04,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 01:01:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-12 01:01:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2023-11-12 01:01:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-12 01:01:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2023-11-12 01:01:04,904 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 53 [2023-11-12 01:01:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:04,905 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2023-11-12 01:01:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.0) internal successors, (12), 11 states have internal predecessors, (12), 8 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-12 01:01:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2023-11-12 01:01:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-12 01:01:04,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:04,917 INFO L195 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 01:01:04,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 01:01:05,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 01:01:05,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:05,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1513518738, now seen corresponding path program 1 times [2023-11-12 01:01:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845960012] [2023-11-12 01:01:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2023-11-12 01:01:06,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845960012] [2023-11-12 01:01:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845960012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 01:01:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059128099] [2023-11-12 01:01:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:06,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:06,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:06,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:06,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_531b2fa5-4b05-4b54-957e-c92e2b9deaff/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:01:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:07,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 01:01:07,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-11-12 01:01:15,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:01:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-12 01:01:20,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059128099] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:01:20,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934698813] [2023-11-12 01:01:20,733 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-12 01:01:20,733 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:01:20,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:01:20,734 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:01:20,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs