./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.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_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:17,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:17,611 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:17,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:17,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:17,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:17,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:17,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:17,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:17,645 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:17,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:17,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:17,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:17,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:17,648 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:17,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:17,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:17,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:17,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:17,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:17,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:17,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:17,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:17,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:17,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:17,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:17,657 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:17,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:17,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:17,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:17,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:17,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:17,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:17,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:17,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:17,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:17,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:17,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:17,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:17,663 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:17,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:17,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:17,664 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_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 399278bac1c9babdd7cf836eb639dd83b63ce913ca16317b40f835863b115f5f [2023-11-26 11:45:18,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:18,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:18,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:18,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:18,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:18,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-26 11:45:21,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:21,441 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:21,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-26 11:45:21,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/data/af5e85a85/d94d84efeb7b446a9da2bdbfe458ed1f/FLAG88bdd692b [2023-11-26 11:45:21,473 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/data/af5e85a85/d94d84efeb7b446a9da2bdbfe458ed1f [2023-11-26 11:45:21,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:21,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:21,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:21,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:21,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:21,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:21,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fffa24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21, skipping insertion in model container [2023-11-26 11:45:21,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:21,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:21,703 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_ccd37063-2d74-4908-ac27-6d3519495abd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-26 11:45:21,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:21,854 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:21,866 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_ccd37063-2d74-4908-ac27-6d3519495abd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i[919,932] [2023-11-26 11:45:21,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:21,921 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:21,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21 WrapperNode [2023-11-26 11:45:21,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:21,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:21,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:21,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:21,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:21,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,027 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2023-11-26 11:45:22,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:22,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:22,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:22,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:22,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,099 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:45:22,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:22,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:22,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:22,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:22,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (1/1) ... [2023-11-26 11:45:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:22,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:22,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:45:22,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:45:22,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:22,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:22,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:22,333 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:22,335 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:23,083 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:23,114 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:23,115 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:23,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:23 BoogieIcfgContainer [2023-11-26 11:45:23,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:23,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:23,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:23,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:23,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:21" (1/3) ... [2023-11-26 11:45:23,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dd584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:23, skipping insertion in model container [2023-11-26 11:45:23,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:21" (2/3) ... [2023-11-26 11:45:23,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2dd584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:23, skipping insertion in model container [2023-11-26 11:45:23,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:23" (3/3) ... [2023-11-26 11:45:23,127 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-47.i [2023-11-26 11:45:23,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:23,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:23,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:23,209 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;@2af1dfac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:23,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:23,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 77 states have (on average 1.6233766233766234) internal successors, (125), 78 states have internal predecessors, (125), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:45:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-26 11:45:23,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:23,234 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:23,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:23,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2059120273, now seen corresponding path program 1 times [2023-11-26 11:45:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386666738] [2023-11-26 11:45:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:23,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386666738] [2023-11-26 11:45:23,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:45:23,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364847571] [2023-11-26 11:45:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:23,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:23,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:23,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:45:23,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-26 11:45:23,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364847571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:23,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059976984] [2023-11-26 11:45:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:45:23,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:45:23,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:23,858 INFO L87 Difference]: Start difference. First operand has 109 states, 77 states have (on average 1.6233766233766234) internal successors, (125), 78 states have internal predecessors, (125), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-26 11:45:23,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:23,906 INFO L93 Difference]: Finished difference Result 215 states and 393 transitions. [2023-11-26 11:45:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:45:23,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 189 [2023-11-26 11:45:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:23,918 INFO L225 Difference]: With dead ends: 215 [2023-11-26 11:45:23,918 INFO L226 Difference]: Without dead ends: 107 [2023-11-26 11:45:23,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:45:23,926 INFO L413 NwaCegarLoop]: 171 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, 171 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:23,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:45:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-26 11:45:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-26 11:45:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 76 states have (on average 1.5263157894736843) internal successors, (116), 76 states have internal predecessors, (116), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:45:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 174 transitions. [2023-11-26 11:45:23,983 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 174 transitions. Word has length 189 [2023-11-26 11:45:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:23,984 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 174 transitions. [2023-11-26 11:45:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-26 11:45:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 174 transitions. [2023-11-26 11:45:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-26 11:45:23,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:23,990 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:24,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:45:24,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 11:45:24,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:24,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:24,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1873888463, now seen corresponding path program 1 times [2023-11-26 11:45:24,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:24,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170683088] [2023-11-26 11:45:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:24,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:24,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:24,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475329354] [2023-11-26 11:45:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:24,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:24,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:24,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 240 proven. 78 refuted. 0 times theorem prover too weak. 1306 trivial. 0 not checked. [2023-11-26 11:45:24,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-26 11:45:25,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170683088] [2023-11-26 11:45:25,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475329354] [2023-11-26 11:45:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475329354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:25,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:45:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611752256] [2023-11-26 11:45:25,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:25,313 INFO L87 Difference]: Start difference. First operand 107 states and 174 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2023-11-26 11:45:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:25,769 INFO L93 Difference]: Finished difference Result 218 states and 350 transitions. [2023-11-26 11:45:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:45:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 190 [2023-11-26 11:45:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:25,773 INFO L225 Difference]: With dead ends: 218 [2023-11-26 11:45:25,773 INFO L226 Difference]: Without dead ends: 112 [2023-11-26 11:45:25,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:45:25,776 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 155 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:25,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 456 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-26 11:45:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-11-26 11:45:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.4743589743589745) internal successors, (115), 78 states have internal predecessors, (115), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:45:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 173 transitions. [2023-11-26 11:45:25,797 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 173 transitions. Word has length 190 [2023-11-26 11:45:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:25,799 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 173 transitions. [2023-11-26 11:45:25,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 3 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2023-11-26 11:45:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 173 transitions. [2023-11-26 11:45:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-26 11:45:25,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:25,804 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:25,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:26,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:26,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:26,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1804516328, now seen corresponding path program 1 times [2023-11-26 11:45:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443678885] [2023-11-26 11:45:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:26,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559911006] [2023-11-26 11:45:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:26,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:26,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:26,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:45:26,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-26 11:45:26,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:26,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443678885] [2023-11-26 11:45:26,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559911006] [2023-11-26 11:45:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559911006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:26,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428352951] [2023-11-26 11:45:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:26,315 INFO L87 Difference]: Start difference. First operand 110 states and 173 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:26,407 INFO L93 Difference]: Finished difference Result 319 states and 503 transitions. [2023-11-26 11:45:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:26,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 191 [2023-11-26 11:45:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:26,414 INFO L225 Difference]: With dead ends: 319 [2023-11-26 11:45:26,417 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 11:45:26,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:26,420 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 149 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:26,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 369 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 11:45:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 124. [2023-11-26 11:45:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 92 states have (on average 1.5) internal successors, (138), 92 states have internal predecessors, (138), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-26 11:45:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 196 transitions. [2023-11-26 11:45:26,471 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 196 transitions. Word has length 191 [2023-11-26 11:45:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:26,472 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 196 transitions. [2023-11-26 11:45:26,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 196 transitions. [2023-11-26 11:45:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-26 11:45:26,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:26,476 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:26,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:26,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:26,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:26,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2023371046, now seen corresponding path program 1 times [2023-11-26 11:45:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767790064] [2023-11-26 11:45:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:26,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725821697] [2023-11-26 11:45:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:26,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:26,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:26,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:26,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:45:26,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 838 proven. 39 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2023-11-26 11:45:27,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-26 11:45:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767790064] [2023-11-26 11:45:27,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725821697] [2023-11-26 11:45:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725821697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:27,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:27,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-26 11:45:27,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344007794] [2023-11-26 11:45:27,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:27,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:45:27,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:27,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:45:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:45:27,328 INFO L87 Difference]: Start difference. First operand 124 states and 196 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-26 11:45:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:28,341 INFO L93 Difference]: Finished difference Result 491 states and 750 transitions. [2023-11-26 11:45:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:45:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 191 [2023-11-26 11:45:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:28,350 INFO L225 Difference]: With dead ends: 491 [2023-11-26 11:45:28,350 INFO L226 Difference]: Without dead ends: 368 [2023-11-26 11:45:28,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:45:28,353 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 377 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:28,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1112 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:45:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-26 11:45:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 265. [2023-11-26 11:45:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 184 states have (on average 1.4184782608695652) internal successors, (261), 186 states have internal predecessors, (261), 73 states have call successors, (73), 7 states have call predecessors, (73), 7 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-26 11:45:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 407 transitions. [2023-11-26 11:45:28,409 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 407 transitions. Word has length 191 [2023-11-26 11:45:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:28,410 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 407 transitions. [2023-11-26 11:45:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-26 11:45:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 407 transitions. [2023-11-26 11:45:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-26 11:45:28,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:28,414 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:28,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:28,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:28,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:28,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1513897956, now seen corresponding path program 1 times [2023-11-26 11:45:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:28,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852933882] [2023-11-26 11:45:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975269502] [2023-11-26 11:45:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:28,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:28,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:45:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:45:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-26 11:45:28,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852933882] [2023-11-26 11:45:28,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975269502] [2023-11-26 11:45:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975269502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:28,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:28,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527392225] [2023-11-26 11:45:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:28,918 INFO L87 Difference]: Start difference. First operand 265 states and 407 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:29,052 INFO L93 Difference]: Finished difference Result 613 states and 936 transitions. [2023-11-26 11:45:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 191 [2023-11-26 11:45:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:29,061 INFO L225 Difference]: With dead ends: 613 [2023-11-26 11:45:29,061 INFO L226 Difference]: Without dead ends: 377 [2023-11-26 11:45:29,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:29,063 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 148 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:29,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 399 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:45:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-26 11:45:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 297. [2023-11-26 11:45:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 216 states have (on average 1.4166666666666667) internal successors, (306), 218 states have internal predecessors, (306), 73 states have call successors, (73), 7 states have call predecessors, (73), 7 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-26 11:45:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 452 transitions. [2023-11-26 11:45:29,120 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 452 transitions. Word has length 191 [2023-11-26 11:45:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:29,120 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 452 transitions. [2023-11-26 11:45:29,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 452 transitions. [2023-11-26 11:45:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-26 11:45:29,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:29,124 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:29,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:29,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:29,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:29,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2118654761, now seen corresponding path program 1 times [2023-11-26 11:45:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422195503] [2023-11-26 11:45:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:29,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022680285] [2023-11-26 11:45:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:45:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:29,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:45:29,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-11-26 11:45:31,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:45:31,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422195503] [2023-11-26 11:45:31,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022680285] [2023-11-26 11:45:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022680285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:45:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665792696] [2023-11-26 11:45:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2023-11-26 11:45:31,073 INFO L87 Difference]: Start difference. First operand 297 states and 452 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:34,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-26 11:45:36,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-26 11:45:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:42,252 INFO L93 Difference]: Finished difference Result 981 states and 1476 transitions. [2023-11-26 11:45:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 192 [2023-11-26 11:45:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:42,259 INFO L225 Difference]: With dead ends: 981 [2023-11-26 11:45:42,259 INFO L226 Difference]: Without dead ends: 713 [2023-11-26 11:45:42,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=34, Invalid=55, Unknown=1, NotChecked=0, Total=90 [2023-11-26 11:45:42,261 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 256 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:42,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 785 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 303 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-11-26 11:45:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2023-11-26 11:45:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 506. [2023-11-26 11:45:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 401 states have (on average 1.4688279301745637) internal successors, (589), 405 states have internal predecessors, (589), 93 states have call successors, (93), 11 states have call predecessors, (93), 11 states have return successors, (93), 89 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-26 11:45:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 775 transitions. [2023-11-26 11:45:42,324 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 775 transitions. Word has length 192 [2023-11-26 11:45:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:42,325 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 775 transitions. [2023-11-26 11:45:42,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-11-26 11:45:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 775 transitions. [2023-11-26 11:45:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-26 11:45:42,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:42,329 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:42,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:42,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:42,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:42,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2119054233, now seen corresponding path program 1 times [2023-11-26 11:45:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928448644] [2023-11-26 11:45:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:42,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285725980] [2023-11-26 11:45:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:42,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:42,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:42,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccd37063-2d74-4908-ac27-6d3519495abd/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:45:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:42,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 11:45:42,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 556 proven. 207 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-26 11:45:44,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-11-26 11:45:55,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928448644] [2023-11-26 11:45:55,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285725980] [2023-11-26 11:45:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285725980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:55,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:55,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2023-11-26 11:45:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144641069] [2023-11-26 11:45:55,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:55,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:45:55,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:45:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:45:55,976 INFO L87 Difference]: Start difference. First operand 506 states and 775 transitions. Second operand has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 25 states have internal predecessors, (112), 6 states have call successors, (58), 5 states have call predecessors, (58), 8 states have return successors, (58), 6 states have call predecessors, (58), 6 states have call successors, (58) [2023-11-26 11:46:04,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers []