./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh --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 7fd36b961a9568d61d1e2740d3df2c3ef998c6b657eefe353ce47ee368fc6b64 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:17:28,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:17:28,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:17:28,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:17:28,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:17:28,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:17:28,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:17:28,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:17:28,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:17:28,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:17:28,865 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:17:28,866 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:17:28,866 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:17:28,867 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:17:28,867 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:17:28,868 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:17:28,868 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:17:28,869 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:17:28,869 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:17:28,869 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:17:28,870 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:17:28,871 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:17:28,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:17:28,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:17:28,872 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:17:28,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:17:28,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:17:28,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:17:28,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:17:28,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:17:28,875 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:17:28,875 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:17:28,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:17:28,876 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:17:28,876 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:17:28,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:17:28,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:17:28,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:17:28,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:17:28,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:17:28,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:17:28,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:17:28,879 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_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fd36b961a9568d61d1e2740d3df2c3ef998c6b657eefe353ce47ee368fc6b64 [2023-12-02 14:17:29,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:17:29,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:17:29,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:17:29,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:17:29,118 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:17:29,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-02 14:17:31,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:17:32,046 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:17:32,047 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-02 14:17:32,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/data/501c06bdc/373781c4b8f04da8b72ee4439fc414f7/FLAG0319d65e1 [2023-12-02 14:17:32,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/data/501c06bdc/373781c4b8f04da8b72ee4439fc414f7 [2023-12-02 14:17:32,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:17:32,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:17:32,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:17:32,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:17:32,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:17:32,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bca490e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32, skipping insertion in model container [2023-12-02 14:17:32,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:17:32,233 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_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i[917,930] [2023-12-02 14:17:32,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:17:32,309 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:17:32,321 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_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-84.i[917,930] [2023-12-02 14:17:32,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:17:32,377 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:17:32,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32 WrapperNode [2023-12-02 14:17:32,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:17:32,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:17:32,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:17:32,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:17:32,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,399 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,444 INFO L138 Inliner]: procedures = 29, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 398 [2023-12-02 14:17:32,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:17:32,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:17:32,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:17:32,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:17:32,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:17:32,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:17:32,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:17:32,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:17:32,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (1/1) ... [2023-12-02 14:17:32,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:17:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:17:32,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:17:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:17:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:17:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 14:17:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:17:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 14:17:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:17:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 14:17:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:17:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:17:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:17:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:17:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:17:32,688 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:17:32,690 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:17:33,101 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:17:33,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:17:33,507 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:17:33,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:17:33 BoogieIcfgContainer [2023-12-02 14:17:33,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:17:33,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:17:33,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:17:33,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:17:33,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:17:32" (1/3) ... [2023-12-02 14:17:33,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7436dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:17:33, skipping insertion in model container [2023-12-02 14:17:33,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:17:32" (2/3) ... [2023-12-02 14:17:33,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7436dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:17:33, skipping insertion in model container [2023-12-02 14:17:33,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:17:33" (3/3) ... [2023-12-02 14:17:33,517 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-84.i [2023-12-02 14:17:33,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:17:33,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:17:33,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:17:33,576 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;@52b43965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:17:33,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:17:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 14:17:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 14:17:33,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:17:33,589 INFO L195 NwaCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:17:33,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:17:33,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:17:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1957049720, now seen corresponding path program 1 times [2023-12-02 14:17:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:17:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81416293] [2023-12-02 14:17:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:17:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:17:33,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:17:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030736981] [2023-12-02 14:17:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:17:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:17:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:17:33,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:17:33,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4eb49e3-0d8a-4eb6-aeb5-77078557f545/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:17:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:17:37,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 216 conjunts are in the unsatisfiable core [2023-12-02 14:17:37,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:17:38,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2023-12-02 14:17:41,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2023-12-02 14:17:42,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2023-12-02 14:17:45,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2023-12-02 14:17:47,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 48 [2023-12-02 14:17:49,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-12-02 14:17:53,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 77 [2023-12-02 14:17:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 89 [2023-12-02 14:17:59,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 101 [2023-12-02 14:18:02,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 18 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 113 [2023-12-02 14:18:08,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 337 [2023-12-02 14:18:08,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 279 [2023-12-02 14:18:08,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 261 [2023-12-02 14:18:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 103 proven. 268 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 14:18:23,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:18:25,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:18:25,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 291