./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.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_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:31,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:31,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:03:31,858 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:31,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:31,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:31,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:31,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:31,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:31,898 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:31,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:31,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:31,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:31,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:31,901 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:31,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:31,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:03:31,903 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:31,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:31,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:31,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:31,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:03:31,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:31,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:03:31,907 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:31,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:03:31,907 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:31,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:31,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:31,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:31,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:31,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:31,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:31,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:31,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:03:31,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:31,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:31,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:31,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:31,912 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:03:31,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:31,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:31,913 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d [2023-11-26 12:03:32,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:32,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:32,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:32,228 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:32,229 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:32,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:35,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:35,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:35,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:35,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/4cd0a7b37/c488a49811a9432490cc88ce58632633/FLAG86e1628cb [2023-11-26 12:03:35,677 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/4cd0a7b37/c488a49811a9432490cc88ce58632633 [2023-11-26 12:03:35,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:35,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:35,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:35,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:35,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:35,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:35" (1/1) ... [2023-11-26 12:03:35,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13af213e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:35, skipping insertion in model container [2023-11-26 12:03:35,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:35" (1/1) ... [2023-11-26 12:03:35,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:35,896 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-11-26 12:03:35,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:35,961 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:35,975 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-11-26 12:03:36,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:36,023 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:36,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36 WrapperNode [2023-11-26 12:03:36,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:36,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:36,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:36,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:36,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,092 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-11-26 12:03:36,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:36,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:36,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:36,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:36,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,145 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:03:36,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:36,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:36,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:36,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:36,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (1/1) ... [2023-11-26 12:03:36,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:36,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:36,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:36,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:03:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:03:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:03:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:36,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:36,394 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:36,396 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:36,825 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:36,894 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:36,895 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:03:36,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:36 BoogieIcfgContainer [2023-11-26 12:03:36,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:36,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:36,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:36,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:36,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:35" (1/3) ... [2023-11-26 12:03:36,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c1f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:36, skipping insertion in model container [2023-11-26 12:03:36,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:36" (2/3) ... [2023-11-26 12:03:36,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c1f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:36, skipping insertion in model container [2023-11-26 12:03:36,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:36" (3/3) ... [2023-11-26 12:03:36,913 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:36,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:36,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:03:36,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:36,999 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=PETRI_NET, 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;@3e3a4ac4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:37,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:03:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 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) [2023-11-26 12:03:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:37,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:37,016 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:37,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:37,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash 452644599, now seen corresponding path program 1 times [2023-11-26 12:03:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985288188] [2023-11-26 12:03:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:37,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:37,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985288188] [2023-11-26 12:03:37,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:03:37,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017779576] [2023-11-26 12:03:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:37,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:37,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:37,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:03:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:37,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:03:37,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-26 12:03:37,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017779576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:37,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:37,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652918500] [2023-11-26 12:03:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:37,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:37,426 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 12:03:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:37,460 INFO L93 Difference]: Finished difference Result 77 states and 130 transitions. [2023-11-26 12:03:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-11-26 12:03:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:37,469 INFO L225 Difference]: With dead ends: 77 [2023-11-26 12:03:37,469 INFO L226 Difference]: Without dead ends: 38 [2023-11-26 12:03:37,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:37,477 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:37,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:03:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-26 12:03:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-26 12:03:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2023-11-26 12:03:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2023-11-26 12:03:37,519 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 88 [2023-11-26 12:03:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2023-11-26 12:03:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 12:03:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2023-11-26 12:03:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:37,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:37,526 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:37,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:03:37,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 12:03:37,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:37,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 469163327, now seen corresponding path program 1 times [2023-11-26 12:03:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852276778] [2023-11-26 12:03:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:37,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055632425] [2023-11-26 12:03:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:37,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:37,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:37,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:03:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:37,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:03:37,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-26 12:03:38,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852276778] [2023-11-26 12:03:38,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055632425] [2023-11-26 12:03:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055632425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:03:38,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86345900] [2023-11-26 12:03:38,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:03:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:03:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:03:38,179 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-26 12:03:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:38,324 INFO L93 Difference]: Finished difference Result 113 states and 161 transitions. [2023-11-26 12:03:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-11-26 12:03:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:38,330 INFO L225 Difference]: With dead ends: 113 [2023-11-26 12:03:38,331 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 12:03:38,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:38,337 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 161 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:03:38,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 12:03:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-11-26 12:03:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 12:03:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-11-26 12:03:38,385 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 88 [2023-11-26 12:03:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:38,388 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-11-26 12:03:38,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-26 12:03:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-11-26 12:03:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:38,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:38,396 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:38,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 12:03:38,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:38,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:38,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2050796607, now seen corresponding path program 1 times [2023-11-26 12:03:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374041261] [2023-11-26 12:03:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:38,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:38,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318471530] [2023-11-26 12:03:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:38,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:38,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:38,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:03:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:38,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:03:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:03:38,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:03:38,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:03:38,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 12:03:38,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:39,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:39,126 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-26 12:03:39,130 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:03:39,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:03:39 BoogieIcfgContainer [2023-11-26 12:03:39,244 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:03:39,245 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:03:39,251 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:03:39,251 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:03:39,252 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:36" (3/4) ... [2023-11-26 12:03:39,255 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 12:03:39,256 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:03:39,257 INFO L158 Benchmark]: Toolchain (without parser) took 3575.90ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 80.6MB in the beginning and 131.8MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:03:39,263 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 123.7MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:03:39,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.95ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 67.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 12:03:39,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.79ms. Allocated memory is still 123.7MB. Free memory was 67.1MB in the beginning and 63.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:03:39,268 INFO L158 Benchmark]: Boogie Preprocessor took 80.09ms. Allocated memory is still 123.7MB. Free memory was 63.8MB in the beginning and 57.9MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:03:39,268 INFO L158 Benchmark]: RCFGBuilder took 721.54ms. Allocated memory is still 123.7MB. Free memory was 57.9MB in the beginning and 84.5MB in the end (delta: -26.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 12:03:39,269 INFO L158 Benchmark]: TraceAbstraction took 2347.11ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 84.0MB in the beginning and 131.8MB in the end (delta: -47.8MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2023-11-26 12:03:39,269 INFO L158 Benchmark]: Witness Printer took 11.02ms. Allocated memory is still 167.8MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:03:39,275 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 123.7MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.95ms. Allocated memory is still 123.7MB. Free memory was 80.1MB in the beginning and 67.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.79ms. Allocated memory is still 123.7MB. Free memory was 67.1MB in the beginning and 63.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.09ms. Allocated memory is still 123.7MB. Free memory was 63.8MB in the beginning and 57.9MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 721.54ms. Allocated memory is still 123.7MB. Free memory was 57.9MB in the beginning and 84.5MB in the end (delta: -26.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2347.11ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 84.0MB in the beginning and 131.8MB in the end (delta: -47.8MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * Witness Printer took 11.02ms. Allocated memory is still 167.8MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 85, overapproximation of someUnaryDOUBLEoperation at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 85, overapproximation of someBinaryArithmeticFLOAToperation at line 51. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 32; [L23] unsigned char var_1_7 = 128; [L24] unsigned char var_1_8 = 64; [L25] unsigned char var_1_9 = 100; [L26] unsigned char var_1_10 = 1; [L27] float var_1_11 = -0.6; [L28] unsigned char var_1_12 = 1; [L29] double var_1_13 = 999999999999999.2; [L30] float var_1_14 = 50.25; [L31] float var_1_15 = 15.5; [L32] float var_1_16 = 128.5; [L33] unsigned char var_1_17 = 0; [L34] unsigned char last_1_var_1_17 = 0; [L89] isInitial = 1 [L90] FCALL initially() [L91] COND TRUE 1 [L92] CALL updateLastVariables() [L82] last_1_var_1_17 = var_1_17 [L92] RET updateLastVariables() [L93] CALL updateVariables() [L57] var_1_7 = __VERIFIER_nondet_uchar() [L58] CALL assume_abort_if_not(var_1_7 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L58] RET assume_abort_if_not(var_1_7 >= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L59] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L59] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=64, var_1_9=100] [L60] var_1_8 = __VERIFIER_nondet_uchar() [L61] CALL assume_abort_if_not(var_1_8 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L61] RET assume_abort_if_not(var_1_8 >= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L62] CALL assume_abort_if_not(var_1_8 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L62] RET assume_abort_if_not(var_1_8 <= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=100] [L63] var_1_9 = __VERIFIER_nondet_uchar() [L64] CALL assume_abort_if_not(var_1_9 >= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L64] RET assume_abort_if_not(var_1_9 >= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L65] CALL assume_abort_if_not(var_1_9 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L65] RET assume_abort_if_not(var_1_9 <= 127) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=1, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L66] var_1_10 = __VERIFIER_nondet_uchar() [L67] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L67] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_17=0, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L68] CALL assume_abort_if_not(var_1_10 <= 63) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L68] RET assume_abort_if_not(var_1_10 <= 63) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=1, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L69] var_1_12 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L70] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L71] CALL assume_abort_if_not(var_1_12 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L71] RET assume_abort_if_not(var_1_12 <= 1) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_13=4999999999999996/5, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L72] var_1_13 = __VERIFIER_nondet_double() [L73] CALL assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L73] RET assume_abort_if_not((var_1_13 >= -922337.2036854776000e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_14=201/4, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L74] var_1_14 = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L75] RET assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_15=31/2, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L76] var_1_15 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L77] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_16=257/2, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L78] var_1_16 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L79] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L93] RET updateVariables() [L94] CALL step() [L38] signed long int stepLocal_0 = (last_1_var_1_17 * last_1_var_1_17) * last_1_var_1_17; VAL [isInitial=1, last_1_var_1_17=0, stepLocal_0=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=32, var_1_7=128, var_1_8=127, var_1_9=63] [L39] COND FALSE !(stepLocal_0 < ((((last_1_var_1_17) > (last_1_var_1_17)) ? (last_1_var_1_17) : (last_1_var_1_17)))) [L42] var_1_1 = var_1_8 VAL [isInitial=1, last_1_var_1_17=0, stepLocal_0=0, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] [L44] unsigned char stepLocal_1 = var_1_1; VAL [isInitial=1, last_1_var_1_17=0, stepLocal_0=0, stepLocal_1=127, var_1_10=63, var_1_12=0, var_1_17=0, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] [L45] COND TRUE stepLocal_1 >= var_1_1 [L46] var_1_17 = (((((var_1_7) < 0 ) ? -(var_1_7) : (var_1_7))) - (((((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) < 0 ) ? -((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) : ((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10)))))) VAL [isInitial=1, last_1_var_1_17=0, stepLocal_0=0, stepLocal_1=127, var_1_10=63, var_1_12=0, var_1_17=65, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] [L50] COND TRUE var_1_12 || ((var_1_13 * 49.25) == 32.8) [L51] var_1_11 = (((((var_1_14 + var_1_15)) > (var_1_16)) ? ((var_1_14 + var_1_15)) : (var_1_16))) VAL [isInitial=1, last_1_var_1_17=0, stepLocal_0=0, stepLocal_1=127, var_1_10=63, var_1_11=2, var_1_12=0, var_1_16=0, var_1_17=65, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] [L94] RET step() [L95] CALL, EXPR property() [L85-L86] return (((((last_1_var_1_17 * last_1_var_1_17) * last_1_var_1_17) < ((((last_1_var_1_17) > (last_1_var_1_17)) ? (last_1_var_1_17) : (last_1_var_1_17)))) ? (var_1_1 == ((unsigned char) (var_1_7 - (((((var_1_8) < (var_1_9)) ? (var_1_8) : (var_1_9))) - var_1_10)))) : (var_1_1 == ((unsigned char) var_1_8))) && ((var_1_12 || ((var_1_13 * 49.25) == 32.8)) ? (var_1_11 == ((float) (((((var_1_14 + var_1_15)) > (var_1_16)) ? ((var_1_14 + var_1_15)) : (var_1_16))))) : (var_1_11 == ((float) var_1_15)))) && ((var_1_1 >= var_1_1) ? (var_1_17 == ((unsigned char) (((((var_1_7) < 0 ) ? -(var_1_7) : (var_1_7))) - (((((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) < 0 ) ? -((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))) : ((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10)))))))) : (var_1_17 == ((unsigned char) var_1_8))) ; [L95] RET, EXPR property() [L95] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_11=2, var_1_12=0, var_1_16=0, var_1_17=65, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_17=0, var_1_10=63, var_1_11=2, var_1_12=0, var_1_16=0, var_1_17=65, var_1_1=127, var_1_7=128, var_1_8=127, var_1_9=63] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 100 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 SizeOfPredicates, 1 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 728/728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 12:03:39,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:42,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:42,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 12:03:42,166 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:42,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:42,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:42,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:42,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:42,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:42,227 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:42,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:42,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:42,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:42,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:42,232 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:42,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:42,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:03:42,234 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:42,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:42,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:42,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:03:42,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:42,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:03:42,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:03:42,237 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:03:42,237 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:03:42,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:42,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:03:42,239 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:42,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:42,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:42,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:42,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:42,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:42,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:42,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:42,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:03:42,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:03:42,244 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:03:42,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:42,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:42,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:03:42,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:42,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:42,246 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:03:42,246 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78cb2a64d376bc24725ded4a0eb9b996b458809ee92f4059e872faf6b1604d1d [2023-11-26 12:03:42,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:42,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:42,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:42,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:42,707 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:42,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:45,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:46,131 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:46,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:46,142 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/d528f4c43/3ddf48ecd241484c841755e54ebb7506/FLAG8585cbc70 [2023-11-26 12:03:46,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/data/d528f4c43/3ddf48ecd241484c841755e54ebb7506 [2023-11-26 12:03:46,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:46,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:46,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:46,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:46,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:46,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4769e526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46, skipping insertion in model container [2023-11-26 12:03:46,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:46,382 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-11-26 12:03:46,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:46,450 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:46,471 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_1e332ced-bb2c-4642-ac74-9c28cd60da81/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-75.i[915,928] [2023-11-26 12:03:46,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:46,557 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:46,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46 WrapperNode [2023-11-26 12:03:46,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:46,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:46,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:46,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:46,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,647 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-11-26 12:03:46,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:46,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:46,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:46,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:46,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,680 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:03:46,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:46,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:46,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:46,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:46,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (1/1) ... [2023-11-26 12:03:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:46,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:46,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:46,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:03:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:03:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:03:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:46,874 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:46,877 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:48,103 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:48,211 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:48,215 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:03:48,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:48 BoogieIcfgContainer [2023-11-26 12:03:48,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:48,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:48,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:48,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:48,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:46" (1/3) ... [2023-11-26 12:03:48,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7cb3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:48, skipping insertion in model container [2023-11-26 12:03:48,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:46" (2/3) ... [2023-11-26 12:03:48,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7cb3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:48, skipping insertion in model container [2023-11-26 12:03:48,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:48" (3/3) ... [2023-11-26 12:03:48,232 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-75.i [2023-11-26 12:03:48,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:48,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:03:48,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:48,334 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=PETRI_NET, 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;@59f1c68f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:48,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:03:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 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) [2023-11-26 12:03:48,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:48,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:48,359 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:48,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:48,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash 452644599, now seen corresponding path program 1 times [2023-11-26 12:03:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:48,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187346420] [2023-11-26 12:03:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:48,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:48,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:48,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 12:03:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:48,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:03:48,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-26 12:03:48,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:48,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187346420] [2023-11-26 12:03:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187346420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590136645] [2023-11-26 12:03:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:03:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:03:48,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:48,929 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 24 states have internal predecessors, (31), 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 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 12:03:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:49,409 INFO L93 Difference]: Finished difference Result 77 states and 130 transitions. [2023-11-26 12:03:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:03:49,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2023-11-26 12:03:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:49,439 INFO L225 Difference]: With dead ends: 77 [2023-11-26 12:03:49,439 INFO L226 Difference]: Without dead ends: 38 [2023-11-26 12:03:49,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:03:49,446 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:49,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:03:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-26 12:03:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-26 12:03:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2023-11-26 12:03:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2023-11-26 12:03:49,492 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 88 [2023-11-26 12:03:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:49,493 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2023-11-26 12:03:49,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-26 12:03:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2023-11-26 12:03:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:49,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:49,501 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:49,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 12:03:49,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:49,702 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:49,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 469163327, now seen corresponding path program 1 times [2023-11-26 12:03:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:49,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213731781] [2023-11-26 12:03:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:49,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:49,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:49,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:49,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 12:03:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:49,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:49,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-26 12:03:50,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:50,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213731781] [2023-11-26 12:03:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213731781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:03:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100619101] [2023-11-26 12:03:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:50,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:03:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:50,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:03:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:03:50,303 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-26 12:03:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:51,889 INFO L93 Difference]: Finished difference Result 113 states and 161 transitions. [2023-11-26 12:03:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 88 [2023-11-26 12:03:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:51,905 INFO L225 Difference]: With dead ends: 113 [2023-11-26 12:03:51,906 INFO L226 Difference]: Without dead ends: 76 [2023-11-26 12:03:51,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:51,908 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:51,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 161 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 12:03:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-26 12:03:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-11-26 12:03:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 12:03:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-11-26 12:03:51,937 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 88 [2023-11-26 12:03:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:51,938 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-11-26 12:03:51,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-26 12:03:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-11-26 12:03:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 12:03:51,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:51,941 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:51,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 12:03:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:52,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:52,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2050796607, now seen corresponding path program 1 times [2023-11-26 12:03:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178984154] [2023-11-26 12:03:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:52,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:52,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:52,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e332ced-bb2c-4642-ac74-9c28cd60da81/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 12:03:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 12:03:52,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:19,353 WARN L293 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)