./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje --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 c1b5c482da5d2c6667d34018776f68ea028be3d534a2149af7f706efb36af7e7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:39:21,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:39:21,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 06:39:21,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:39:21,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:39:22,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:39:22,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:39:22,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:39:22,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:39:22,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:39:22,008 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:39:22,008 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:39:22,009 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:39:22,012 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:39:22,012 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:39:22,013 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:39:22,013 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:39:22,013 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:39:22,014 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:39:22,014 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:39:22,015 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:39:22,019 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:39:22,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:39:22,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:39:22,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:39:22,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:39:22,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:39:22,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:39:22,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:39:22,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:39:22,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:39:22,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:39:22,024 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:39:22,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:39:22,024 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:39:22,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:39:22,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:39:22,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:39:22,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:39:22,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:39:22,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:39:22,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:39:22,028 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:39:22,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:39:22,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:39:22,029 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:39:22,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:39:22,029 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_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1b5c482da5d2c6667d34018776f68ea028be3d534a2149af7f706efb36af7e7 [2024-11-09 06:39:22,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:39:22,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:39:22,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:39:22,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:39:22,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:39:22,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i Unable to find full path for "g++" [2024-11-09 06:39:24,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:39:24,809 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:39:24,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i [2024-11-09 06:39:24,823 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/data/35dd92ded/c9c3a498865746da97c85c9b3b0ded56/FLAG3c5061d77 [2024-11-09 06:39:25,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/data/35dd92ded/c9c3a498865746da97c85c9b3b0ded56 [2024-11-09 06:39:25,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:39:25,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:39:25,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:39:25,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:39:25,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:39:25,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e594ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25, skipping insertion in model container [2024-11-09 06:39:25,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:39:25,328 WARN L250 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_f62241fe-a5d9-4e42-af79-c91205bafcb1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i[914,927] [2024-11-09 06:39:25,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:39:25,391 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:39:25,406 WARN L250 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_f62241fe-a5d9-4e42-af79-c91205bafcb1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-6.i[914,927] [2024-11-09 06:39:25,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:39:25,481 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:39:25,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25 WrapperNode [2024-11-09 06:39:25,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:39:25,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:39:25,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:39:25,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:39:25,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,551 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2024-11-09 06:39:25,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:39:25,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:39:25,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:39:25,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:39:25,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:39:25,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:39:25,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:39:25,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:39:25,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (1/1) ... [2024-11-09 06:39:25,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:39:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:39:25,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:39:25,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:39:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:39:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:39:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:39:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:39:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:39:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:39:25,763 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:39:25,768 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:39:26,120 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 06:39:26,121 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:39:26,293 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:39:26,293 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 06:39:26,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:39:26 BoogieIcfgContainer [2024-11-09 06:39:26,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:39:26,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:39:26,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:39:26,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:39:26,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:39:25" (1/3) ... [2024-11-09 06:39:26,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f979a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:39:26, skipping insertion in model container [2024-11-09 06:39:26,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:39:25" (2/3) ... [2024-11-09 06:39:26,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f979a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:39:26, skipping insertion in model container [2024-11-09 06:39:26,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:39:26" (3/3) ... [2024-11-09 06:39:26,304 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-6.i [2024-11-09 06:39:26,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:39:26,326 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:39:26,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:39:26,410 INFO L333 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, 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;@4e83f0af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:39:26,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:39:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-09 06:39:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 06:39:26,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:39:26,430 INFO L215 NwaCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:39:26,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:39:26,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:39:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1437113364, now seen corresponding path program 1 times [2024-11-09 06:39:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:39:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866437573] [2024-11-09 06:39:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:39:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:39:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505683561] [2024-11-09 06:39:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:39:26,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:39:26,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:39:26,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:39:26,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62241fe-a5d9-4e42-af79-c91205bafcb1/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:39:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:39:27,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:39:27,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:44:24,431 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 474 DAG size of output: 688 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:44:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 65 proven. 33 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-09 06:44:39,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:47:01,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:47:01,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866437573] [2024-11-09 06:47:01,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 06:47:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505683561] [2024-11-09 06:47:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505683561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:47:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1586744030] [2024-11-09 06:47:01,581 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-09 06:47:01,581 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:47:01,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:47:01,591 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:47:01,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:49:36,529 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 144000 conjunctions. This might take some time...