./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.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_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya --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 7c1e6f9b7837b3a4d3a233b1a377077cbc39874bd10e396a331467935604efb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:37:30,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:37:30,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:37:30,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:37:30,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:37:30,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:37:30,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:37:30,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:37:30,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:37:30,889 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:37:30,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:37:30,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:37:30,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:37:30,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:37:30,892 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:37:30,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:37:30,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:37:30,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:37:30,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:37:30,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:37:30,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:37:30,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:37:30,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:37:30,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:37:30,897 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:37:30,898 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:37:30,898 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:37:30,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:37:30,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:37:30,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:37:30,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:37:30,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:30,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:37:30,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:37:30,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:37:30,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:37:30,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:37:30,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:37:30,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:37:30,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:37:30,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:37:30,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:37:30,903 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_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c1e6f9b7837b3a4d3a233b1a377077cbc39874bd10e396a331467935604efb0 [2023-11-28 20:37:31,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:37:31,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:37:31,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:37:31,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:37:31,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:37:31,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.i [2023-11-28 20:37:33,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:37:34,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:37:34,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.i [2023-11-28 20:37:34,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/data/43c6a4a80/57d3ff741de24f8fb28e4e07ef724655/FLAGb8c9d4dcd [2023-11-28 20:37:34,146 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/data/43c6a4a80/57d3ff741de24f8fb28e4e07ef724655 [2023-11-28 20:37:34,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:37:34,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:37:34,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:34,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:37:34,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:37:34,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3cf0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34, skipping insertion in model container [2023-11-28 20:37:34,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:37:34,348 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_a1be8525-b35a-497a-862d-4debb5b9acbd/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.i[915,928] [2023-11-28 20:37:34,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:34,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:37:34,419 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_a1be8525-b35a-497a-862d-4debb5b9acbd/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-25.i[915,928] [2023-11-28 20:37:34,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:34,455 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:37:34,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34 WrapperNode [2023-11-28 20:37:34,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:34,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:34,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:37:34,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:37:34,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,501 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2023-11-28 20:37:34,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:34,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:37:34,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:37:34,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:37:34,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,530 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]. [2023-11-28 20:37:34,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,536 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:37:34,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:37:34,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:37:34,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:37:34,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (1/1) ... [2023-11-28 20:37:34,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:34,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:34,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:37:34,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:37:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:37:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 20:37:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 20:37:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:37:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:37:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:37:34,703 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:37:34,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:37:34,915 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:37:34,960 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:37:34,961 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 20:37:34,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:37:34 BoogieIcfgContainer [2023-11-28 20:37:34,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:37:34,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:37:34,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:37:34,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:37:34,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:37:34" (1/3) ... [2023-11-28 20:37:34,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae45ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:37:34, skipping insertion in model container [2023-11-28 20:37:34,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:34" (2/3) ... [2023-11-28 20:37:34,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae45ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:37:34, skipping insertion in model container [2023-11-28 20:37:34,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:37:34" (3/3) ... [2023-11-28 20:37:34,971 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-25.i [2023-11-28 20:37:34,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:37:34,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:37:35,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:37:35,044 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;@1e0d00a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:37:35,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 20:37:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-28 20:37:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:37:35,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:37:35,064 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:35,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:37:35,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1188313540, now seen corresponding path program 1 times [2023-11-28 20:37:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10454486] [2023-11-28 20:37:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10454486] [2023-11-28 20:37:35,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 20:37:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673741818] [2023-11-28 20:37:35,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:35,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:35,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:35,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:35,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:37:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:35,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:37:35,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:37:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-28 20:37:35,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:37:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673741818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:35,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:35,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:37:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701625331] [2023-11-28 20:37:35,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:37:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:37:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:37:35,540 INFO L87 Difference]: Start difference. First operand has 52 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 27 states have internal predecessors, (35), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:37:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:37:35,574 INFO L93 Difference]: Finished difference Result 101 states and 183 transitions. [2023-11-28 20:37:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:37:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2023-11-28 20:37:35,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:37:35,583 INFO L225 Difference]: With dead ends: 101 [2023-11-28 20:37:35,583 INFO L226 Difference]: Without dead ends: 50 [2023-11-28 20:37:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:37:35,590 INFO L413 NwaCegarLoop]: 73 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, 73 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 [2023-11-28 20:37:35,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:37:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-28 20:37:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-28 20:37:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-28 20:37:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2023-11-28 20:37:35,631 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 135 [2023-11-28 20:37:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:37:35,632 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2023-11-28 20:37:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:37:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2023-11-28 20:37:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:37:35,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:37:35,637 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:35,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:37:35,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 20:37:35,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:37:35,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:35,839 INFO L85 PathProgramCache]: Analyzing trace with hash 807068218, now seen corresponding path program 1 times [2023-11-28 20:37:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:35,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485678900] [2023-11-28 20:37:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:35,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:37:35,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605210087] [2023-11-28 20:37:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:35,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:35,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:35,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:37:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:36,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 20:37:36,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-28 20:38:04,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:04,027 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1)) (.cse6 (+ (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296) 1))) (let ((.cse1 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< (mod (div 127 ~var_1_9~0) 4294967296) .cse6)))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse2 (= (mod c_~var_1_5~0 4294967296) .cse3))) (and (or .cse0 .cse1) (or .cse1 .cse2) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse3 .cse4) (< ~var_1_9~0 .cse5) (< .cse4 .cse6)))) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse0 .cse2 (<= (+ .cse3 1) .cse7)) (< .cse7 .cse6)))))) is different from false [2023-11-28 20:39:08,361 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_1~0 4294967296))) (let ((.cse2 (+ .cse4 1))) (let ((.cse0 (= (mod c_~var_1_5~0 4294967296) .cse4)) (.cse3 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (forall ((~var_1_9~0 Int)) (or (< (mod (div 127 ~var_1_9~0) 4294967296) .cse2) (< ~var_1_9~0 (+ c_~var_1_13~0 1)))))) (and (or .cse0 .cse1) (or (< (mod (div 127 c_~var_1_13~0) 4294967296) .cse2) (and .cse3 .cse0)) (or .cse3 .cse1))))) is different from false [2023-11-28 20:39:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-28 20:39:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485678900] [2023-11-28 20:39:08,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:39:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605210087] [2023-11-28 20:39:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605210087] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:08,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:08,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-11-28 20:39:08,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462926107] [2023-11-28 20:39:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:39:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:39:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2023-11-28 20:39:08,491 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:39:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:11,186 INFO L93 Difference]: Finished difference Result 75 states and 106 transitions. [2023-11-28 20:39:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:39:11,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-28 20:39:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:11,190 INFO L225 Difference]: With dead ends: 75 [2023-11-28 20:39:11,190 INFO L226 Difference]: Without dead ends: 73 [2023-11-28 20:39:11,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=62, Invalid=216, Unknown=2, NotChecked=62, Total=342 [2023-11-28 20:39:11,192 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 22 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:11,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 367 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 102 Unchecked, 1.6s Time] [2023-11-28 20:39:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-28 20:39:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2023-11-28 20:39:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 20:39:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2023-11-28 20:39:11,213 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 135 [2023-11-28 20:39:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:11,214 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2023-11-28 20:39:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:39:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2023-11-28 20:39:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:39:11,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:11,217 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:11,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:39:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:11,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:11,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash 807127800, now seen corresponding path program 1 times [2023-11-28 20:39:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390176459] [2023-11-28 20:39:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:11,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:39:11,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152351463] [2023-11-28 20:39:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:11,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:11,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:11,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:11,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:39:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 20:39:11,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:40:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-28 20:40:52,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:42:08,281 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1)) (.cse6 (+ (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296) 1))) (let ((.cse1 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< (mod (div 127 ~var_1_9~0) 4294967296) .cse6)))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse2 (= (mod c_~var_1_5~0 4294967296) .cse3))) (and (or .cse0 .cse1) (or .cse1 .cse2) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse3 .cse4) (< ~var_1_9~0 .cse5) (< .cse4 .cse6)))) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse0 .cse2 (<= (+ .cse3 1) .cse7)) (< .cse7 .cse6)))))) is different from false [2023-11-28 20:42:13,210 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_1~0 4294967296))) (let ((.cse2 (+ .cse4 1))) (let ((.cse0 (= (mod c_~var_1_5~0 4294967296) .cse4)) (.cse3 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (forall ((~var_1_9~0 Int)) (or (< (mod (div 127 ~var_1_9~0) 4294967296) .cse2) (< ~var_1_9~0 (+ c_~var_1_13~0 1)))))) (and (or .cse0 .cse1) (or (< (mod (div 127 c_~var_1_13~0) 4294967296) .cse2) (and .cse3 .cse0)) (or .cse3 .cse1))))) is different from false [2023-11-28 20:42:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-28 20:42:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:13,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390176459] [2023-11-28 20:42:13,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:42:13,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152351463] [2023-11-28 20:42:13,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152351463] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:42:13,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:42:13,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-28 20:42:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410390933] [2023-11-28 20:42:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:13,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:42:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:42:13,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2023-11-28 20:42:13,328 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:42:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:17,019 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-11-28 20:42:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:42:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-28 20:42:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:17,023 INFO L225 Difference]: With dead ends: 72 [2023-11-28 20:42:17,023 INFO L226 Difference]: Without dead ends: 70 [2023-11-28 20:42:17,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=45, Invalid=143, Unknown=2, NotChecked=50, Total=240 [2023-11-28 20:42:17,024 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 4 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:17,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 339 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 64 Unchecked, 1.0s Time] [2023-11-28 20:42:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-28 20:42:17,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-11-28 20:42:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 20:42:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2023-11-28 20:42:17,039 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 135 [2023-11-28 20:42:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:17,040 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2023-11-28 20:42:17,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:42:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2023-11-28 20:42:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:42:17,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:17,042 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:17,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:42:17,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:17,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:17,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash 808915260, now seen corresponding path program 1 times [2023-11-28 20:42:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:17,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454126811] [2023-11-28 20:42:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:17,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:17,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:42:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759653498] [2023-11-28 20:42:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:17,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:42:17,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:42:17,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:42:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:17,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 20:42:17,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:42:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-28 20:42:32,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:43:35,600 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_1~0 4294967296)) (.cse2 (+ c_~var_1_13~0 1)) (.cse3 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296))) (let ((.cse4 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse2) (< .cse3 (mod (div 127 ~var_1_9~0) 4294967296))))) (.cse6 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse5 (= (mod c_~var_1_5~0 4294967296) .cse1))) (and (forall ((~var_1_9~0 Int)) (let ((.cse0 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse0 (+ .cse1 1)) (< ~var_1_9~0 .cse2) (< .cse3 .cse0)))) (or .cse4 .cse5) (or .cse4 .cse6) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse6 .cse5 (<= .cse7 .cse1)) (< .cse3 .cse7)))))) is different from false [2023-11-28 20:43:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-28 20:43:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:37,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454126811] [2023-11-28 20:43:37,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:43:37,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759653498] [2023-11-28 20:43:37,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759653498] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:43:37,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:43:37,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-11-28 20:43:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923295439] [2023-11-28 20:43:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:43:37,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:43:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:37,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:43:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=185, Unknown=1, NotChecked=28, Total=272 [2023-11-28 20:43:37,292 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:43:42,204 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296)) (.cse2 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1))) (let ((.cse7 (forall ((~var_1_9~0 Int)) (or (< .cse2 (mod (div 127 ~var_1_9~0) 4294967296)) (< ~var_1_9~0 .cse5)))) (.cse8 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< .cse6 (mod (div 127 ~var_1_9~0) 4294967296))))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (= (mod c_~var_1_5~0 4294967296) .cse2)) (.cse3 (mod (div 127 c_~var_1_13~0) 4294967296))) (and (or (and .cse0 .cse1) (< .cse2 .cse3)) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse4 (+ .cse2 1)) (< ~var_1_9~0 .cse5) (< .cse6 .cse4)))) (or .cse1 .cse7) (or .cse0 .cse7) (or .cse8 .cse1) (or .cse8 .cse0) (or (and .cse0 .cse1 (<= .cse3 .cse2)) (< .cse6 .cse3))))) is different from false [2023-11-28 20:43:43,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:43:43,505 INFO L93 Difference]: Finished difference Result 91 states and 126 transitions. [2023-11-28 20:43:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:43:43,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-28 20:43:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:43:43,507 INFO L225 Difference]: With dead ends: 91 [2023-11-28 20:43:43,507 INFO L226 Difference]: Without dead ends: 89 [2023-11-28 20:43:43,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=72, Invalid=240, Unknown=2, NotChecked=66, Total=380 [2023-11-28 20:43:43,509 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 35 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:43:43,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 288 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 44 Invalid, 0 Unknown, 55 Unchecked, 0.6s Time] [2023-11-28 20:43:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-28 20:43:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2023-11-28 20:43:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 20:43:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2023-11-28 20:43:43,529 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 135 [2023-11-28 20:43:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:43:43,529 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2023-11-28 20:43:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:43:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2023-11-28 20:43:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:43:43,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:43:43,532 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:43,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:43:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-28 20:43:43,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:43:43,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 808974842, now seen corresponding path program 1 times [2023-11-28 20:43:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821168636] [2023-11-28 20:43:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:43,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:43:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704922438] [2023-11-28 20:43:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:43,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:43,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:43,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:43,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:43:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:43,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 20:43:43,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 477 proven. 66 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2023-11-28 20:44:30,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:46:02,116 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_1~0 4294967296)) (.cse2 (+ c_~var_1_13~0 1)) (.cse3 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296))) (let ((.cse4 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse2) (< .cse3 (mod (div 127 ~var_1_9~0) 4294967296))))) (.cse6 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse5 (= (mod c_~var_1_5~0 4294967296) .cse1))) (and (forall ((~var_1_9~0 Int)) (let ((.cse0 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse0 (+ .cse1 1)) (< ~var_1_9~0 .cse2) (< .cse3 .cse0)))) (or .cse4 .cse5) (or .cse4 .cse6) (let ((.cse7 (mod (div 127 c_~var_1_13~0) 4294967296))) (or (and .cse6 .cse5 (<= .cse7 .cse1)) (< .cse3 .cse7)))))) is different from false [2023-11-28 20:46:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-28 20:46:03,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821168636] [2023-11-28 20:46:03,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:46:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704922438] [2023-11-28 20:46:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704922438] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:46:03,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:46:03,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-28 20:46:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965990702] [2023-11-28 20:46:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:46:03,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:46:03,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:46:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=139, Unknown=1, NotChecked=24, Total=210 [2023-11-28 20:46:03,698 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:46:09,974 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_ULTIMATE.start_step_~stepLocal_1~0#1| 4294967296)) (.cse2 (mod c_~var_1_1~0 4294967296)) (.cse5 (+ c_~var_1_13~0 1))) (let ((.cse7 (forall ((~var_1_9~0 Int)) (or (< .cse2 (mod (div 127 ~var_1_9~0) 4294967296)) (< ~var_1_9~0 .cse5)))) (.cse8 (forall ((~var_1_9~0 Int)) (or (< ~var_1_9~0 .cse5) (< .cse6 (mod (div 127 ~var_1_9~0) 4294967296))))) (.cse0 (= (mod c_~last_1_var_1_6~0 256) 0)) (.cse1 (= (mod c_~var_1_5~0 4294967296) .cse2)) (.cse3 (mod (div 127 c_~var_1_13~0) 4294967296))) (and (or (and .cse0 .cse1) (< .cse2 .cse3)) (forall ((~var_1_9~0 Int)) (let ((.cse4 (mod (div 127 ~var_1_9~0) 4294967296))) (or (< .cse4 (+ .cse2 1)) (< ~var_1_9~0 .cse5) (< .cse6 .cse4)))) (or .cse1 .cse7) (or .cse0 .cse7) (or .cse8 .cse1) (or .cse8 .cse0) (or (and .cse0 .cse1 (<= .cse3 .cse2)) (< .cse6 .cse3))))) is different from false [2023-11-28 20:46:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:13,887 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2023-11-28 20:46:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:46:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 135 [2023-11-28 20:46:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:13,890 INFO L225 Difference]: With dead ends: 79 [2023-11-28 20:46:13,890 INFO L226 Difference]: Without dead ends: 77 [2023-11-28 20:46:13,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=54, Invalid=162, Unknown=2, NotChecked=54, Total=272 [2023-11-28 20:46:13,892 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:13,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 311 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 36 Unchecked, 2.3s Time] [2023-11-28 20:46:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-28 20:46:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2023-11-28 20:46:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-28 20:46:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2023-11-28 20:46:13,907 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 135 [2023-11-28 20:46:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:13,907 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2023-11-28 20:46:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:46:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2023-11-28 20:46:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-28 20:46:13,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:13,910 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:13,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:46:14,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:14,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:14,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:14,111 INFO L85 PathProgramCache]: Analyzing trace with hash 475337748, now seen corresponding path program 1 times [2023-11-28 20:46:14,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:14,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124998762] [2023-11-28 20:46:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:14,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:46:14,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251709785] [2023-11-28 20:46:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:14,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:46:14,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:46:14,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:46:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:14,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:46:14,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:46:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-28 20:46:14,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:46:14,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124998762] [2023-11-28 20:46:14,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:46:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251709785] [2023-11-28 20:46:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251709785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:46:14,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:46:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:46:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757388120] [2023-11-28 20:46:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:46:14,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:46:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:46:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:46:14,621 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:46:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:14,737 INFO L93 Difference]: Finished difference Result 192 states and 279 transitions. [2023-11-28 20:46:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:46:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 136 [2023-11-28 20:46:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:14,740 INFO L225 Difference]: With dead ends: 192 [2023-11-28 20:46:14,740 INFO L226 Difference]: Without dead ends: 125 [2023-11-28 20:46:14,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:46:14,742 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:14,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 214 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:46:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-28 20:46:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 111. [2023-11-28 20:46:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 50 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-28 20:46:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 165 transitions. [2023-11-28 20:46:14,766 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 165 transitions. Word has length 136 [2023-11-28 20:46:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:14,767 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 165 transitions. [2023-11-28 20:46:14,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-28 20:46:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 165 transitions. [2023-11-28 20:46:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-28 20:46:14,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:14,772 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:14,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:46:14,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:14,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:14,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1763905621, now seen corresponding path program 1 times [2023-11-28 20:46:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:14,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801123255] [2023-11-28 20:46:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:14,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:46:14,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501604826] [2023-11-28 20:46:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:14,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:46:14,997 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:46:14,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:46:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:15,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 20:46:15,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:46:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4181 backedges. 1761 proven. 939 refuted. 0 times theorem prover too weak. 1481 trivial. 0 not checked. [2023-11-28 20:46:15,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:46:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4181 backedges. 65 proven. 111 refuted. 0 times theorem prover too weak. 4005 trivial. 0 not checked. [2023-11-28 20:46:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801123255] [2023-11-28 20:46:16,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:46:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501604826] [2023-11-28 20:46:16,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501604826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:46:16,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:46:16,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-28 20:46:16,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791624754] [2023-11-28 20:46:16,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:46:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:46:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:46:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:46:16,491 INFO L87 Difference]: Start difference. First operand 111 states and 165 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-11-28 20:46:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:17,125 INFO L93 Difference]: Finished difference Result 226 states and 328 transitions. [2023-11-28 20:46:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:46:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 270 [2023-11-28 20:46:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:17,126 INFO L225 Difference]: With dead ends: 226 [2023-11-28 20:46:17,126 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 20:46:17,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:46:17,129 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 67 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:17,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 77 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:46:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 20:46:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 20:46:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:46:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 20:46:17,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 270 [2023-11-28 20:46:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:17,131 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 20:46:17,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2023-11-28 20:46:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 20:46:17,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 20:46:17,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 20:46:17,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 20:46:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:17,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 20:46:20,987 INFO L895 garLoopResultBuilder]: At program point L93(line 93) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,987 INFO L895 garLoopResultBuilder]: At program point L93-1(line 93) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,987 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-11-28 20:46:20,987 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-28 20:46:20,988 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-28 20:46:20,988 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-11-28 20:46:20,988 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-28 20:46:20,988 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,988 INFO L895 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,988 INFO L895 garLoopResultBuilder]: At program point L106-2(lines 106 112) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,988 INFO L899 garLoopResultBuilder]: For program point L106-3(lines 106 112) no Hoare annotation was computed. [2023-11-28 20:46:20,988 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-28 20:46:20,989 INFO L895 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,989 INFO L895 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,989 INFO L899 garLoopResultBuilder]: For program point L94(lines 60 95) no Hoare annotation was computed. [2023-11-28 20:46:20,989 INFO L895 garLoopResultBuilder]: At program point L90(line 90) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,989 INFO L895 garLoopResultBuilder]: At program point L90-1(line 90) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-28 20:46:20,989 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2023-11-28 20:46:20,989 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 39 59) no Hoare annotation was computed. [2023-11-28 20:46:20,989 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-11-28 20:46:20,990 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,990 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,990 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 47) no Hoare annotation was computed. [2023-11-28 20:46:20,990 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 41 47) no Hoare annotation was computed. [2023-11-28 20:46:20,990 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-11-28 20:46:20,990 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 20:46:20,990 INFO L895 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,990 INFO L895 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,990 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L87-1(line 87) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-28 20:46:20,991 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 44) no Hoare annotation was computed. [2023-11-28 20:46:20,991 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,991 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-11-28 20:46:20,992 INFO L899 garLoopResultBuilder]: For program point L88(line 88) no Hoare annotation was computed. [2023-11-28 20:46:20,992 INFO L895 garLoopResultBuilder]: At program point L84(line 84) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,992 INFO L895 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0)) [2023-11-28 20:46:20,992 INFO L895 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0)) [2023-11-28 20:46:20,992 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-28 20:46:20,992 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 59) no Hoare annotation was computed. [2023-11-28 20:46:20,992 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,992 INFO L895 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: (and (<= (mod ~var_1_6~0 256) 0) (<= (mod ~last_1_var_1_6~0 256) 0) (<= (mod ~var_1_11~0 256) 0)) [2023-11-28 20:46:20,992 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-28 20:46:20,993 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-28 20:46:20,993 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-28 20:46:20,993 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-28 20:46:20,996 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:20,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:46:21,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:46:21 BoogieIcfgContainer [2023-11-28 20:46:21,005 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:46:21,006 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:46:21,006 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:46:21,006 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:46:21,006 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:37:34" (3/4) ... [2023-11-28 20:46:21,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:46:21,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-28 20:46:21,014 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-28 20:46:21,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-28 20:46:21,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 20:46:21,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 20:46:21,101 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:46:21,102 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:46:21,102 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:46:21,103 INFO L158 Benchmark]: Toolchain (without parser) took 526953.18ms. Allocated memory was 127.9MB in the beginning and 943.7MB in the end (delta: 815.8MB). Free memory was 71.8MB in the beginning and 359.4MB in the end (delta: -287.6MB). Peak memory consumption was 530.4MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,103 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory was 102.7MB in the beginning and 102.6MB in the end (delta: 144.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:46:21,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.55ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 71.5MB in the beginning and 131.6MB in the end (delta: -60.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,104 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.72ms. Allocated memory is still 161.5MB. Free memory was 131.6MB in the beginning and 128.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,105 INFO L158 Benchmark]: Boogie Preprocessor took 43.57ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,105 INFO L158 Benchmark]: RCFGBuilder took 415.48ms. Allocated memory is still 161.5MB. Free memory was 126.8MB in the beginning and 108.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,105 INFO L158 Benchmark]: TraceAbstraction took 526040.87ms. Allocated memory was 161.5MB in the beginning and 943.7MB in the end (delta: 782.2MB). Free memory was 108.0MB in the beginning and 365.7MB in the end (delta: -257.7MB). Peak memory consumption was 525.3MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,105 INFO L158 Benchmark]: Witness Printer took 96.31ms. Allocated memory is still 943.7MB. Free memory was 365.7MB in the beginning and 359.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 20:46:21,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 127.9MB. Free memory was 102.7MB in the beginning and 102.6MB in the end (delta: 144.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.55ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 71.5MB in the beginning and 131.6MB in the end (delta: -60.2MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.72ms. Allocated memory is still 161.5MB. Free memory was 131.6MB in the beginning and 128.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.57ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 126.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.48ms. Allocated memory is still 161.5MB. Free memory was 126.8MB in the beginning and 108.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 526040.87ms. Allocated memory was 161.5MB in the beginning and 943.7MB in the end (delta: 782.2MB). Free memory was 108.0MB in the beginning and 365.7MB in the end (delta: -257.7MB). Peak memory consumption was 525.3MB. Max. memory is 16.1GB. * Witness Printer took 96.31ms. Allocated memory is still 943.7MB. Free memory was 365.7MB in the beginning and 359.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 526.0s, OverallIterations: 7, TraceHistogramMax: 46, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 1669 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 257 IncrementalHoareTripleChecker+Unchecked, 1171 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 420 IncrementalHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 498 mSDtfsCounter, 420 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1897 GetRequests, 1812 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 60.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 52 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 174 PreInvPairs, 227 NumberOfFragments, 375 HoareAnnotationTreeSize, 174 FomulaSimplifications, 3317 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 25 FomulaSimplificationsInter, 2627 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 496.0s InterpolantComputationTime, 1216 NumberOfCodeBlocks, 1216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1879 ConstructedInterpolants, 8 QuantifiedInterpolants, 6957 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2398 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 17168/18482 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: ((((var_1_6 % 256) <= 0) && ((last_1_var_1_6 % 256) <= 0)) && ((var_1_11 % 256) <= 0)) RESULT: Ultimate proved your program to be correct! [2023-11-28 20:46:21,319 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-11-28 20:46:21,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1be8525-b35a-497a-862d-4debb5b9acbd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE