./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.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_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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_2931b6c0-051d-456e-968f-26d550b82a28/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 9a0c37ebc273c362e4d2cb519b4c223d2a9b2256e1ef158a08ce7f4ca051bc4d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:30,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:30,567 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:43:30,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:30,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:30,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:30,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:30,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:30,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:30,623 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:30,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:30,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:30,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:30,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:30,627 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:30,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:30,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:30,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:30,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:30,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:30,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:30,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:30,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:30,631 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:30,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:30,632 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:30,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:30,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:30,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:30,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:30,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:30,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:30,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:30,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:30,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:30,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:30,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:30,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:30,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:30,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:30,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:30,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:30,638 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_2931b6c0-051d-456e-968f-26d550b82a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a0c37ebc273c362e4d2cb519b4c223d2a9b2256e1ef158a08ce7f4ca051bc4d [2023-11-26 10:43:30,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:31,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:31,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:31,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:31,029 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:31,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:43:34,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:34,418 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:34,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:43:34,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/ed85675a0/bbab2bc4a9bd45e0977bf313176ccc5b/FLAGf66a9e652 [2023-11-26 10:43:34,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/ed85675a0/bbab2bc4a9bd45e0977bf313176ccc5b [2023-11-26 10:43:34,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:34,452 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:34,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:34,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:34,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:34,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d6fbb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34, skipping insertion in model container [2023-11-26 10:43:34,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:34,679 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_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i[919,932] [2023-11-26 10:43:34,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:34,775 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:34,788 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_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i[919,932] [2023-11-26 10:43:34,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:34,869 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:34,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34 WrapperNode [2023-11-26 10:43:34,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:34,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:34,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:34,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:34,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:34,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,007 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 204 [2023-11-26 10:43:35,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:35,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:35,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:35,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:35,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,044 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 10:43:35,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:35,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:35,078 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:35,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:35,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (1/1) ... [2023-11-26 10:43:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:35,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:35,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:35,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:35,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:35,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:43:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:43:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:35,327 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:35,330 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:35,848 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:35,893 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:35,893 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:35,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35 BoogieIcfgContainer [2023-11-26 10:43:35,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:35,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:35,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:35,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:35,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:34" (1/3) ... [2023-11-26 10:43:35,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caad19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:35, skipping insertion in model container [2023-11-26 10:43:35,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:34" (2/3) ... [2023-11-26 10:43:35,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caad19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:35, skipping insertion in model container [2023-11-26 10:43:35,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35" (3/3) ... [2023-11-26 10:43:35,905 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:43:35,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:35,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:43:35,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:35,987 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;@2f0c5fa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:35,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:43:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 10:43:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-26 10:43:36,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:36,014 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:36,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:36,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1742159795, now seen corresponding path program 1 times [2023-11-26 10:43:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:36,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861982381] [2023-11-26 10:43:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:36,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667310027] [2023-11-26 10:43:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:36,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:36,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:36,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:36,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:43:36,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-26 10:43:36,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861982381] [2023-11-26 10:43:36,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667310027] [2023-11-26 10:43:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667310027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:36,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169163289] [2023-11-26 10:43:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:36,763 INFO L87 Difference]: Start difference. First operand has 82 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-26 10:43:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:36,834 INFO L93 Difference]: Finished difference Result 161 states and 296 transitions. [2023-11-26 10:43:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:36,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 176 [2023-11-26 10:43:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:36,847 INFO L225 Difference]: With dead ends: 161 [2023-11-26 10:43:36,848 INFO L226 Difference]: Without dead ends: 80 [2023-11-26 10:43:36,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 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 10:43:36,856 INFO L413 NwaCegarLoop]: 125 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, 125 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 10:43:36,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-26 10:43:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-26 10:43:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 10:43:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 128 transitions. [2023-11-26 10:43:36,937 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 128 transitions. Word has length 176 [2023-11-26 10:43:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:36,942 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 128 transitions. [2023-11-26 10:43:36,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-26 10:43:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 128 transitions. [2023-11-26 10:43:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-26 10:43:36,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:36,957 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:36,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:43:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:43:37,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:37,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2135186805, now seen corresponding path program 1 times [2023-11-26 10:43:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:37,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324505245] [2023-11-26 10:43:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:37,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:37,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939332863] [2023-11-26 10:43:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:37,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:37,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:37,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-26 10:43:37,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324505245] [2023-11-26 10:43:37,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939332863] [2023-11-26 10:43:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939332863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:37,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:37,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547785164] [2023-11-26 10:43:37,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:37,594 INFO L87 Difference]: Start difference. First operand 80 states and 128 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-26 10:43:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:37,713 INFO L93 Difference]: Finished difference Result 208 states and 333 transitions. [2023-11-26 10:43:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 176 [2023-11-26 10:43:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:37,718 INFO L225 Difference]: With dead ends: 208 [2023-11-26 10:43:37,719 INFO L226 Difference]: Without dead ends: 129 [2023-11-26 10:43:37,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:37,722 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 95 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:37,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 379 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:43:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-26 10:43:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2023-11-26 10:43:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:43:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 177 transitions. [2023-11-26 10:43:37,746 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 177 transitions. Word has length 176 [2023-11-26 10:43:37,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:37,747 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 177 transitions. [2023-11-26 10:43:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-26 10:43:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 177 transitions. [2023-11-26 10:43:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-26 10:43:37,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:37,751 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:37,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:37,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:37,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:37,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1286600604, now seen corresponding path program 1 times [2023-11-26 10:43:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55398493] [2023-11-26 10:43:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:38,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:38,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745795720] [2023-11-26 10:43:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:38,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:38,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:38,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 363 proven. 9 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2023-11-26 10:43:38,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-11-26 10:43:38,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55398493] [2023-11-26 10:43:38,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:38,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745795720] [2023-11-26 10:43:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745795720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:38,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 10:43:38,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727519245] [2023-11-26 10:43:38,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:43:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:43:38,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:38,519 INFO L87 Difference]: Start difference. First operand 113 states and 177 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 10:43:38,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:38,997 INFO L93 Difference]: Finished difference Result 271 states and 422 transitions. [2023-11-26 10:43:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:38,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 177 [2023-11-26 10:43:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:39,002 INFO L225 Difference]: With dead ends: 271 [2023-11-26 10:43:39,002 INFO L226 Difference]: Without dead ends: 159 [2023-11-26 10:43:39,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:39,005 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 201 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:39,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 285 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:43:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-26 10:43:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2023-11-26 10:43:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 95 states have (on average 1.3578947368421053) internal successors, (129), 97 states have internal predecessors, (129), 55 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2023-11-26 10:43:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 239 transitions. [2023-11-26 10:43:39,033 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 239 transitions. Word has length 177 [2023-11-26 10:43:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:39,035 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 239 transitions. [2023-11-26 10:43:39,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-26 10:43:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 239 transitions. [2023-11-26 10:43:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-26 10:43:39,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:39,038 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:39,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 10:43:39,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:39,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:39,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1896705265, now seen corresponding path program 1 times [2023-11-26 10:43:39,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468422395] [2023-11-26 10:43:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,290 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059605071] [2023-11-26 10:43:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:39,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:39,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:43:39,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 516 proven. 135 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-26 10:43:40,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:45,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:45,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468422395] [2023-11-26 10:43:45,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:45,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059605071] [2023-11-26 10:43:45,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059605071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:45,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:45,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 10:43:45,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494588088] [2023-11-26 10:43:45,701 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:43:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:43:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2023-11-26 10:43:45,706 INFO L87 Difference]: Start difference. First operand 154 states and 239 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-26 10:43:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:46,750 INFO L93 Difference]: Finished difference Result 458 states and 689 transitions. [2023-11-26 10:43:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:43:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 178 [2023-11-26 10:43:46,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:46,758 INFO L225 Difference]: With dead ends: 458 [2023-11-26 10:43:46,758 INFO L226 Difference]: Without dead ends: 342 [2023-11-26 10:43:46,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=92, Invalid=249, Unknown=1, NotChecked=0, Total=342 [2023-11-26 10:43:46,762 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 188 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:46,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 677 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:43:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-26 10:43:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 263. [2023-11-26 10:43:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 170 states have (on average 1.3529411764705883) internal successors, (230), 172 states have internal predecessors, (230), 83 states have call successors, (83), 9 states have call predecessors, (83), 9 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-26 10:43:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 396 transitions. [2023-11-26 10:43:46,846 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 396 transitions. Word has length 178 [2023-11-26 10:43:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:46,847 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 396 transitions. [2023-11-26 10:43:46,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-26 10:43:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 396 transitions. [2023-11-26 10:43:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-26 10:43:46,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:46,851 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:46,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:47,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:47,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1337200032, now seen corresponding path program 1 times [2023-11-26 10:43:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421300906] [2023-11-26 10:43:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:47,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277291905] [2023-11-26 10:43:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:47,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:47,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:47,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:43:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:47,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 10:43:47,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 516 proven. 135 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-26 10:43:49,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421300906] [2023-11-26 10:43:54,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277291905] [2023-11-26 10:43:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277291905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:54,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:54,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-26 10:43:54,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286988453] [2023-11-26 10:43:54,901 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:43:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:43:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2023-11-26 10:43:54,904 INFO L87 Difference]: Start difference. First operand 263 states and 396 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-26 10:43:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:57,718 INFO L93 Difference]: Finished difference Result 485 states and 730 transitions. [2023-11-26 10:43:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 10:43:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 179 [2023-11-26 10:43:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:57,725 INFO L225 Difference]: With dead ends: 485 [2023-11-26 10:43:57,725 INFO L226 Difference]: Without dead ends: 369 [2023-11-26 10:43:57,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=178, Invalid=421, Unknown=1, NotChecked=0, Total=600 [2023-11-26 10:43:57,727 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 240 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:57,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 778 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:43:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-26 10:43:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 276. [2023-11-26 10:43:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 183 states have (on average 1.360655737704918) internal successors, (249), 185 states have internal predecessors, (249), 83 states have call successors, (83), 9 states have call predecessors, (83), 9 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-26 10:43:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 415 transitions. [2023-11-26 10:43:57,800 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 415 transitions. Word has length 179 [2023-11-26 10:43:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 415 transitions. [2023-11-26 10:43:57,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-26 10:43:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 415 transitions. [2023-11-26 10:43:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-26 10:43:57,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:57,805 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:57,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:58,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:58,012 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:58,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1936698910, now seen corresponding path program 1 times [2023-11-26 10:43:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:58,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916540334] [2023-11-26 10:43:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:58,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:58,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683096747] [2023-11-26 10:43:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:58,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:58,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:58,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:43:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-11-26 10:43:58,330 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-11-26 10:43:58,330 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-11-26 10:43:58,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:43:58,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:58,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:43:58,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 10:43:58,548 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:43:58,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:43:58 BoogieIcfgContainer [2023-11-26 10:43:58,580 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:43:58,580 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:58,580 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:58,581 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:58,581 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:35" (3/4) ... [2023-11-26 10:43:58,583 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:43:58,585 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:58,585 INFO L158 Benchmark]: Toolchain (without parser) took 24133.90ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 95.2MB in the beginning and 128.2MB in the end (delta: -33.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2023-11-26 10:43:58,586 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:58,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.60ms. Allocated memory is still 134.2MB. Free memory was 95.2MB in the beginning and 79.2MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 10:43:58,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.10ms. Allocated memory is still 134.2MB. Free memory was 79.2MB in the beginning and 102.5MB in the end (delta: -23.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:43:58,587 INFO L158 Benchmark]: Boogie Preprocessor took 68.88ms. Allocated memory is still 134.2MB. Free memory was 102.5MB in the beginning and 96.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 10:43:58,587 INFO L158 Benchmark]: RCFGBuilder took 816.09ms. Allocated memory is still 134.2MB. Free memory was 95.9MB in the beginning and 67.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 10:43:58,588 INFO L158 Benchmark]: TraceAbstraction took 22682.89ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 66.9MB in the beginning and 129.3MB in the end (delta: -62.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:58,588 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 128.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:58,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.60ms. Allocated memory is still 134.2MB. Free memory was 95.2MB in the beginning and 79.2MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 137.10ms. Allocated memory is still 134.2MB. Free memory was 79.2MB in the beginning and 102.5MB in the end (delta: -23.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.88ms. Allocated memory is still 134.2MB. Free memory was 102.5MB in the beginning and 96.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 816.09ms. Allocated memory is still 134.2MB. Free memory was 95.9MB in the beginning and 67.5MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 22682.89ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 66.9MB in the beginning and 129.3MB in the end (delta: -62.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 195.0MB. Free memory was 129.3MB in the beginning and 128.2MB in the end (delta: 1.0MB). 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: unable to decide satisfiability of path constraint, overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryDOUBLEComparisonOperation at line 205. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 16; [L23] signed long int var_1_4 = -64; [L24] signed char var_1_9 = 10; [L25] unsigned char var_1_10 = 0; [L26] signed char var_1_11 = -1; [L27] unsigned short int var_1_12 = 10000; [L28] float var_1_13 = 5.4; [L29] float var_1_14 = 1.4; [L30] unsigned short int var_1_18 = 32; [L31] double var_1_20 = 1.5; [L32] double var_1_21 = 2.75; [L33] unsigned char var_1_22 = 5; [L34] unsigned short int var_1_23 = 55712; [L35] unsigned char var_1_24 = 5; [L36] signed short int var_1_25 = 10; [L37] float var_1_26 = 64.2; [L38] unsigned short int var_1_27 = 64; [L39] float var_1_33 = 2.5; [L40] unsigned long int var_1_35 = 10; [L41] unsigned long int var_1_37 = 2924974040; [L42] unsigned char var_1_38 = 1; [L43] unsigned char var_1_39 = 0; [L44] unsigned char var_1_40 = 0; [L45] unsigned char var_1_41 = 0; [L46] unsigned char var_1_44 = 0; [L47] unsigned char var_1_45 = 0; [L48] unsigned long int var_1_46 = 32; [L49] unsigned long int var_1_47 = 1000000000; [L50] unsigned long int last_1_var_1_1 = 16; [L51] signed char last_1_var_1_9 = 10; [L52] unsigned short int last_1_var_1_12 = 10000; [L53] double last_1_var_1_20 = 1.5; [L54] unsigned char last_1_var_1_22 = 5; [L55] signed short int last_1_var_1_25 = 10; [L209] isInitial = 1 [L210] FCALL initially() [L211] COND TRUE 1 [L212] CALL updateLastVariables() [L197] last_1_var_1_1 = var_1_1 [L198] last_1_var_1_9 = var_1_9 [L199] last_1_var_1_12 = var_1_12 [L200] last_1_var_1_20 = var_1_20 [L201] last_1_var_1_22 = var_1_22 [L202] last_1_var_1_25 = var_1_25 [L212] RET updateLastVariables() [L213] CALL updateVariables() [L152] var_1_4 = __VERIFIER_nondet_long() [L153] CALL assume_abort_if_not(var_1_4 >= -2147483648) [L20] COND FALSE !(!cond) [L153] RET assume_abort_if_not(var_1_4 >= -2147483648) [L154] CALL assume_abort_if_not(var_1_4 <= 2147483647) [L20] COND FALSE !(!cond) [L154] RET assume_abort_if_not(var_1_4 <= 2147483647) [L155] CALL assume_abort_if_not(var_1_4 != 0) [L20] COND FALSE !(!cond) [L155] RET assume_abort_if_not(var_1_4 != 0) [L156] var_1_10 = __VERIFIER_nondet_uchar() [L157] CALL assume_abort_if_not(var_1_10 >= 0) [L20] COND FALSE !(!cond) [L157] RET assume_abort_if_not(var_1_10 >= 0) [L158] CALL assume_abort_if_not(var_1_10 <= 1) [L20] COND FALSE !(!cond) [L158] RET assume_abort_if_not(var_1_10 <= 1) [L159] var_1_11 = __VERIFIER_nondet_char() [L160] CALL assume_abort_if_not(var_1_11 >= -63) [L20] COND FALSE !(!cond) [L160] RET assume_abort_if_not(var_1_11 >= -63) [L161] CALL assume_abort_if_not(var_1_11 <= 63) [L20] COND FALSE !(!cond) [L161] RET assume_abort_if_not(var_1_11 <= 63) [L162] var_1_13 = __VERIFIER_nondet_float() [L163] CALL assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L163] RET assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854776000e+12F && var_1_13 >= 1.0e-20F )) [L164] var_1_14 = __VERIFIER_nondet_float() [L165] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L165] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) [L166] var_1_18 = __VERIFIER_nondet_ushort() [L167] CALL assume_abort_if_not(var_1_18 >= 0) [L20] COND FALSE !(!cond) [L167] RET assume_abort_if_not(var_1_18 >= 0) [L168] CALL assume_abort_if_not(var_1_18 <= 32767) [L20] COND FALSE !(!cond) [L168] RET assume_abort_if_not(var_1_18 <= 32767) [L169] var_1_21 = __VERIFIER_nondet_double() [L170] CALL assume_abort_if_not((var_1_21 >= -922337.2036854765600e+13F && var_1_21 <= -1.0e-20F) || (var_1_21 <= 9223372.036854765600e+12F && var_1_21 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L170] RET assume_abort_if_not((var_1_21 >= -922337.2036854765600e+13F && var_1_21 <= -1.0e-20F) || (var_1_21 <= 9223372.036854765600e+12F && var_1_21 >= 1.0e-20F )) [L171] var_1_23 = __VERIFIER_nondet_ushort() [L172] CALL assume_abort_if_not(var_1_23 >= 32767) [L20] COND FALSE !(!cond) [L172] RET assume_abort_if_not(var_1_23 >= 32767) [L173] CALL assume_abort_if_not(var_1_23 <= 65535) [L20] COND FALSE !(!cond) [L173] RET assume_abort_if_not(var_1_23 <= 65535) [L174] var_1_24 = __VERIFIER_nondet_uchar() [L175] CALL assume_abort_if_not(var_1_24 >= 0) [L20] COND FALSE !(!cond) [L175] RET assume_abort_if_not(var_1_24 >= 0) [L176] CALL assume_abort_if_not(var_1_24 <= 254) [L20] COND FALSE !(!cond) [L176] RET assume_abort_if_not(var_1_24 <= 254) [L177] var_1_26 = __VERIFIER_nondet_float() [L178] CALL assume_abort_if_not((var_1_26 >= -922337.2036854776000e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 9223372.036854776000e+12F && var_1_26 >= 1.0e-20F )) [L20] COND FALSE !(!cond) [L178] RET assume_abort_if_not((var_1_26 >= -922337.2036854776000e+13F && var_1_26 <= -1.0e-20F) || (var_1_26 <= 9223372.036854776000e+12F && var_1_26 >= 1.0e-20F )) [L179] CALL assume_abort_if_not(var_1_26 != 0.0F) [L20] COND FALSE !(!cond) [L179] RET assume_abort_if_not(var_1_26 != 0.0F) [L180] var_1_37 = __VERIFIER_nondet_ulong() [L181] CALL assume_abort_if_not(var_1_37 >= 2147483647) [L20] COND FALSE !(!cond) [L181] RET assume_abort_if_not(var_1_37 >= 2147483647) [L182] CALL assume_abort_if_not(var_1_37 <= 4294967294) [L20] COND FALSE !(!cond) [L182] RET assume_abort_if_not(var_1_37 <= 4294967294) [L183] var_1_39 = __VERIFIER_nondet_uchar() [L184] CALL assume_abort_if_not(var_1_39 >= 0) [L20] COND FALSE !(!cond) [L184] RET assume_abort_if_not(var_1_39 >= 0) [L185] CALL assume_abort_if_not(var_1_39 <= 0) [L20] COND FALSE !(!cond) [L185] RET assume_abort_if_not(var_1_39 <= 0) [L186] var_1_40 = __VERIFIER_nondet_uchar() [L187] CALL assume_abort_if_not(var_1_40 >= 1) [L20] COND FALSE !(!cond) [L187] RET assume_abort_if_not(var_1_40 >= 1) [L188] CALL assume_abort_if_not(var_1_40 <= 1) [L20] COND FALSE !(!cond) [L188] RET assume_abort_if_not(var_1_40 <= 1) [L189] var_1_44 = __VERIFIER_nondet_uchar() [L190] CALL assume_abort_if_not(var_1_44 >= 1) [L20] COND FALSE !(!cond) [L190] RET assume_abort_if_not(var_1_44 >= 1) [L191] CALL assume_abort_if_not(var_1_44 <= 1) [L20] COND FALSE !(!cond) [L191] RET assume_abort_if_not(var_1_44 <= 1) [L192] var_1_45 = __VERIFIER_nondet_uchar() [L193] CALL assume_abort_if_not(var_1_45 >= 0) [L20] COND FALSE !(!cond) [L193] RET assume_abort_if_not(var_1_45 >= 0) [L194] CALL assume_abort_if_not(var_1_45 <= 0) [L20] COND FALSE !(!cond) [L194] RET assume_abort_if_not(var_1_45 <= 0) [L213] RET updateVariables() [L214] CALL step() [L59] COND FALSE !(! var_1_10) [L66] var_1_9 = var_1_11 [L68] COND TRUE var_1_11 < (var_1_12 - ((((var_1_11) < 0 ) ? -(var_1_11) : (var_1_11)))) [L69] COND TRUE \read(var_1_10) [L70] var_1_27 = var_1_24 [L73] COND TRUE var_1_13 >= (- 255.45f) [L74] var_1_38 = ((! var_1_39) && var_1_40) [L80] unsigned char stepLocal_2 = var_1_10; [L81] signed long int stepLocal_1 = last_1_var_1_22; [L82] COND TRUE ((var_1_13 - var_1_14) != ((((last_1_var_1_20) < (last_1_var_1_20)) ? (last_1_var_1_20) : (last_1_var_1_20)))) || stepLocal_2 [L83] COND FALSE !(stepLocal_1 >= last_1_var_1_12) [L86] var_1_12 = last_1_var_1_22 [L89] COND TRUE \read(var_1_44) [L90] COND FALSE !(\read(var_1_45)) [L95] var_1_47 = var_1_24 [L98] unsigned long int stepLocal_5 = last_1_var_1_1; [L99] signed long int stepLocal_4 = var_1_4 + last_1_var_1_9; [L100] unsigned short int stepLocal_3 = var_1_18; [L101] COND FALSE !(stepLocal_5 > last_1_var_1_12) [L112] var_1_22 = var_1_24 [L114] COND TRUE var_1_11 > (var_1_22 * (var_1_12 + var_1_22)) [L115] var_1_20 = var_1_21 [L117] COND FALSE !(var_1_12 < var_1_12) [L120] var_1_33 = var_1_21 [L122] COND FALSE !((var_1_20 / var_1_26) > var_1_13) [L125] var_1_25 = var_1_11 [L127] COND TRUE \read(var_1_10) [L128] var_1_35 = ((((var_1_22) > (var_1_23)) ? (var_1_22) : (var_1_23))) [L136] signed long int stepLocal_0 = (var_1_25 + var_1_9) / var_1_4; [L137] COND TRUE stepLocal_0 == var_1_25 [L138] var_1_1 = (((((var_1_12) < (var_1_22)) ? (var_1_12) : (var_1_22))) + var_1_22) [L140] COND TRUE ((((var_1_22) < 0 ) ? -(var_1_22) : (var_1_22))) < (var_1_9 % var_1_4) [L141] var_1_41 = ((! (var_1_40 && var_1_44)) || (var_1_39 && var_1_45)) [L145] COND TRUE \read(var_1_10) [L146] var_1_46 = (var_1_24 + ((((var_1_22) < 0 ) ? -(var_1_22) : (var_1_22)))) [L214] RET step() [L215] CALL, EXPR property() [L205-L206] return ((((((((var_1_25 + var_1_9) / var_1_4) == var_1_25) ? (var_1_1 == ((unsigned long int) (((((var_1_12) < (var_1_22)) ? (var_1_12) : (var_1_22))) + var_1_22))) : 1) && ((! var_1_10) ? ((((((last_1_var_1_22) > (last_1_var_1_25)) ? (last_1_var_1_22) : (last_1_var_1_25))) >= last_1_var_1_12) ? (var_1_9 == ((signed char) (-16 + var_1_11))) : (var_1_9 == ((signed char) var_1_11))) : (var_1_9 == ((signed char) var_1_11)))) && ((((var_1_13 - var_1_14) != ((((last_1_var_1_20) < (last_1_var_1_20)) ? (last_1_var_1_20) : (last_1_var_1_20)))) || var_1_10) ? ((last_1_var_1_22 >= last_1_var_1_12) ? (var_1_12 == ((unsigned short int) (((((last_1_var_1_22) < (last_1_var_1_22)) ? (last_1_var_1_22) : (last_1_var_1_22))) + 32))) : (var_1_12 == ((unsigned short int) last_1_var_1_22))) : 1)) && ((var_1_11 > (var_1_22 * (var_1_12 + var_1_22))) ? (var_1_20 == ((double) var_1_21)) : 1)) && ((last_1_var_1_1 > last_1_var_1_12) ? ((last_1_var_1_1 >= (var_1_4 + last_1_var_1_9)) ? ((var_1_18 == (var_1_23 - 8)) ? (var_1_22 == ((unsigned char) var_1_24)) : (var_1_22 == ((unsigned char) var_1_24))) : (var_1_22 == ((unsigned char) var_1_24))) : (var_1_22 == ((unsigned char) var_1_24)))) && (((var_1_20 / var_1_26) > var_1_13) ? (var_1_25 == ((signed short int) ((((((((var_1_9) < (var_1_24)) ? (var_1_9) : (var_1_24)))) > (2)) ? (((((var_1_9) < (var_1_24)) ? (var_1_9) : (var_1_24)))) : (2))))) : (var_1_25 == ((signed short int) var_1_11))) ; [L215] RET, EXPR property() [L215] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 6, TraceHistogramMax: 28, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 748 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 724 mSDsluCounter, 2244 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1594 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1524 IncrementalHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 650 mSDtfsCounter, 1524 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1121 GetRequests, 1068 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=276occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 193 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.4s InterpolantComputationTime, 1065 NumberOfCodeBlocks, 1065 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1057 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2181 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 8784/9072 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 10:43:58,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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_2931b6c0-051d-456e-968f-26d550b82a28/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 9a0c37ebc273c362e4d2cb519b4c223d2a9b2256e1ef158a08ce7f4ca051bc4d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:01,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:01,460 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 10:44:01,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:01,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:01,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:01,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:01,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:01,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:01,524 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:01,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:01,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:01,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:01,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:01,528 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:01,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:01,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:01,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:01,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:01,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:01,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:01,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:01,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:01,534 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:44:01,534 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:44:01,535 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:44:01,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:01,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:01,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:01,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:01,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:01,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:01,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:01,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:01,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:01,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:01,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:01,541 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:44:01,541 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:44:01,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:01,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:01,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:01,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:01,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:01,543 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:44:01,543 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_2931b6c0-051d-456e-968f-26d550b82a28/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a0c37ebc273c362e4d2cb519b4c223d2a9b2256e1ef158a08ce7f4ca051bc4d [2023-11-26 10:44:01,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:01,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:02,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:02,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:02,003 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:02,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:44:05,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:05,583 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:05,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:44:05,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/1e6e6eee6/54f3235455ad4f69bb85a20cd9d506f6/FLAG5a220d934 [2023-11-26 10:44:05,623 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/data/1e6e6eee6/54f3235455ad4f69bb85a20cd9d506f6 [2023-11-26 10:44:05,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:05,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:05,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:05,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:05,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:05,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:05" (1/1) ... [2023-11-26 10:44:05,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d799388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:05, skipping insertion in model container [2023-11-26 10:44:05,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:05" (1/1) ... [2023-11-26 10:44:05,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:05,902 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_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i[919,932] [2023-11-26 10:44:05,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:06,026 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:06,040 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_2931b6c0-051d-456e-968f-26d550b82a28/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i[919,932] [2023-11-26 10:44:06,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:06,134 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:06,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06 WrapperNode [2023-11-26 10:44:06,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:06,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:06,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:06,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:06,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,198 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202 [2023-11-26 10:44:06,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:06,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:06,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:06,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:06,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,230 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,270 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 10:44:06,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:06,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:06,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:06,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:06,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (1/1) ... [2023-11-26 10:44:06,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:06,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:06,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:06,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 10:44:06,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:44:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:44:06,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:06,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:06,530 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:06,531 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:20,822 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:20,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:20,900 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:44:20,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:20 BoogieIcfgContainer [2023-11-26 10:44:20,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:20,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:20,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:20,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:20,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:05" (1/3) ... [2023-11-26 10:44:20,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6224ffc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:20, skipping insertion in model container [2023-11-26 10:44:20,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:06" (2/3) ... [2023-11-26 10:44:20,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6224ffc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:20, skipping insertion in model container [2023-11-26 10:44:20,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:20" (3/3) ... [2023-11-26 10:44:20,912 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-26.i [2023-11-26 10:44:20,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:20,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:20,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:21,002 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;@4a8da79c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:21,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 10:44:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-26 10:44:21,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:21,028 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:21,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:21,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:21,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1742159795, now seen corresponding path program 1 times [2023-11-26 10:44:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:44:21,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918206422] [2023-11-26 10:44:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:21,051 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 10:44:21,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:44:21,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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 10:44:21,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931b6c0-051d-456e-968f-26d550b82a28/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 10:44:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:22,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:44:22,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-26 10:44:22,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:22,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:44:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918206422] [2023-11-26 10:44:22,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918206422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:22,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618737823] [2023-11-26 10:44:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:44:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:22,464 INFO L87 Difference]: Start difference. First operand has 82 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2023-11-26 10:44:26,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []