./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.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_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/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_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/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_772bf16e-3735-4bcf-8d91-5d6a53227a32/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 aee69f990ab81a58f1fe8cd275c8a09f43ca6a442f73810f885d3d0c9a85d2b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:17,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:17,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:41:17,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:17,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:17,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:17,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:17,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:17,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:17,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:17,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:17,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:17,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:17,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:17,954 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:17,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:17,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:17,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:17,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:17,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:17,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:17,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:17,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:17,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:17,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:17,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:17,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:17,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:17,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:17,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:17,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:17,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:17,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:17,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:17,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:17,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:17,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:17,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:17,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:17,979 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:17,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:17,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:17,981 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_772bf16e-3735-4bcf-8d91-5d6a53227a32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aee69f990ab81a58f1fe8cd275c8a09f43ca6a442f73810f885d3d0c9a85d2b3 [2023-11-26 10:41:18,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:18,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:18,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:18,357 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:18,358 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:18,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2023-11-26 10:41:21,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:21,788 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:21,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/sv-benchmarks/c/reducercommutativity/rangesum05.i [2023-11-26 10:41:21,800 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/data/3e447ad54/0dbf8ba96ea04b86b479d8958790dda4/FLAG7005a2a91 [2023-11-26 10:41:21,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/data/3e447ad54/0dbf8ba96ea04b86b479d8958790dda4 [2023-11-26 10:41:21,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:21,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:21,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:21,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:21,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:21,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:21" (1/1) ... [2023-11-26 10:41:21,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d470e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:21, skipping insertion in model container [2023-11-26 10:41:21,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:21" (1/1) ... [2023-11-26 10:41:21,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:22,064 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_772bf16e-3735-4bcf-8d91-5d6a53227a32/sv-benchmarks/c/reducercommutativity/rangesum05.i[1457,1470] [2023-11-26 10:41:22,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:22,086 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:41:22,111 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_772bf16e-3735-4bcf-8d91-5d6a53227a32/sv-benchmarks/c/reducercommutativity/rangesum05.i[1457,1470] [2023-11-26 10:41:22,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:22,129 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:41:22,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22 WrapperNode [2023-11-26 10:41:22,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:22,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:22,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:41:22,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:41:22,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,170 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-11-26 10:41:22,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:41:22,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:41:22,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:41:22,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:41:22,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,213 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-11-26 10:41:22,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:41:22,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:41:22,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:41:22,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:41:22,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (1/1) ... [2023-11-26 10:41:22,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:22,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:41:22,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:41:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:41:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:41:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:41:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:41:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:41:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:41:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:41:22,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:41:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:41:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:41:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2023-11-26 10:41:22,352 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2023-11-26 10:41:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:41:22,504 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:41:22,506 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:22,756 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:22,799 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:22,799 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 10:41:22,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:22 BoogieIcfgContainer [2023-11-26 10:41:22,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:22,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:22,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:22,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:22,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:21" (1/3) ... [2023-11-26 10:41:22,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69278ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:22, skipping insertion in model container [2023-11-26 10:41:22,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:22" (2/3) ... [2023-11-26 10:41:22,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69278ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:22, skipping insertion in model container [2023-11-26 10:41:22,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:22" (3/3) ... [2023-11-26 10:41:22,812 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2023-11-26 10:41:22,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:22,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:41:22,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:22,913 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;@1121809e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:22,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:41:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 10:41:22,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:22,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:22,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:22,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1502132506, now seen corresponding path program 1 times [2023-11-26 10:41:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005334577] [2023-11-26 10:41:22,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:22,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005334577] [2023-11-26 10:41:23,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74213989] [2023-11-26 10:41:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:23,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:23,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:41:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:23,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:41:23,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:41:23,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:23,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74213989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:23,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:23,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397819451] [2023-11-26 10:41:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:23,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:41:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:41:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:23,436 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:23,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:23,473 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-11-26 10:41:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:41:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-26 10:41:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:23,485 INFO L225 Difference]: With dead ends: 44 [2023-11-26 10:41:23,485 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 10:41:23,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:23,493 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:23,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 10:41:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 10:41:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-26 10:41:23,595 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 28 [2023-11-26 10:41:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:23,610 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-26 10:41:23,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-26 10:41:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 10:41:23,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:23,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:23,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:41:23,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:23,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1260265879, now seen corresponding path program 1 times [2023-11-26 10:41:23,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846440034] [2023-11-26 10:41:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846440034] [2023-11-26 10:41:23,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968991545] [2023-11-26 10:41:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:23,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:23,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:41:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:23,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:23,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 10:41:23,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968991545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:23,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212515418] [2023-11-26 10:41:23,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:23,999 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:41:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:24,021 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-11-26 10:41:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-26 10:41:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:24,023 INFO L225 Difference]: With dead ends: 41 [2023-11-26 10:41:24,023 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 10:41:24,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 10:41:24,026 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:24,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 10:41:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 10:41:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-11-26 10:41:24,035 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2023-11-26 10:41:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:24,035 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-11-26 10:41:24,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:41:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-11-26 10:41:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 10:41:24,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:24,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:24,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:24,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash -432814053, now seen corresponding path program 1 times [2023-11-26 10:41:24,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:24,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860264519] [2023-11-26 10:41:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:24,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860264519] [2023-11-26 10:41:24,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115527717] [2023-11-26 10:41:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:24,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:24,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:41:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:24,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:24,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:41:24,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115527717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:24,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:24,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492759114] [2023-11-26 10:41:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:24,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:24,439 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:24,469 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-11-26 10:41:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-26 10:41:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:24,471 INFO L225 Difference]: With dead ends: 42 [2023-11-26 10:41:24,471 INFO L226 Difference]: Without dead ends: 25 [2023-11-26 10:41:24,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 10:41:24,474 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:24,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-26 10:41:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-11-26 10:41:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-26 10:41:24,481 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2023-11-26 10:41:24,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:24,482 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-26 10:41:24,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-26 10:41:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 10:41:24,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:24,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:24,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:24,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash 28977858, now seen corresponding path program 1 times [2023-11-26 10:41:24,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:24,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175386532] [2023-11-26 10:41:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175386532] [2023-11-26 10:41:24,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:24,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933913431] [2023-11-26 10:41:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:24,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:24,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:24,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:41:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:24,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:41:24,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 10:41:24,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933913431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:24,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223454409] [2023-11-26 10:41:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:24,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:24,838 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:24,854 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-11-26 10:41:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:24,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-26 10:41:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:24,856 INFO L225 Difference]: With dead ends: 40 [2023-11-26 10:41:24,856 INFO L226 Difference]: Without dead ends: 25 [2023-11-26 10:41:24,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 10:41:24,858 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:24,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-26 10:41:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-26 10:41:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-26 10:41:24,864 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 38 [2023-11-26 10:41:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-26 10:41:24,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-26 10:41:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:41:24,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:24,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:24,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:25,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:25,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:25,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2098863663, now seen corresponding path program 1 times [2023-11-26 10:41:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713863721] [2023-11-26 10:41:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:25,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713863721] [2023-11-26 10:41:25,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:41:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837583819] [2023-11-26 10:41:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:25,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:25,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:25,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:25,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:41:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:25,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 10:41:25,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837583819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:25,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:25,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:25,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487992642] [2023-11-26 10:41:25,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:25,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:25,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:25,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:25,264 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:25,295 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-11-26 10:41:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:25,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-26 10:41:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:25,299 INFO L225 Difference]: With dead ends: 51 [2023-11-26 10:41:25,299 INFO L226 Difference]: Without dead ends: 31 [2023-11-26 10:41:25,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 10:41:25,302 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:25,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-26 10:41:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-26 10:41:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2023-11-26 10:41:25,322 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 39 [2023-11-26 10:41:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:25,322 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-11-26 10:41:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:41:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2023-11-26 10:41:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 10:41:25,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:25,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:25,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:25,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:25,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1976122640, now seen corresponding path program 1 times [2023-11-26 10:41:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319485608] [2023-11-26 10:41:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 10:41:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:41:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 10:41:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:41:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319485608] [2023-11-26 10:41:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319485608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292748354] [2023-11-26 10:41:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:25,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:25,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:41:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:25,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:25,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:41:25,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:41:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292748354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:25,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 10:41:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125217741] [2023-11-26 10:41:25,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:25,883 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:41:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:25,906 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2023-11-26 10:41:25,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:25,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-11-26 10:41:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:25,908 INFO L225 Difference]: With dead ends: 58 [2023-11-26 10:41:25,908 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 10:41:25,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:25,910 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:25,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 10:41:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-26 10:41:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-11-26 10:41:25,917 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 39 [2023-11-26 10:41:25,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:25,917 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-11-26 10:41:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-26 10:41:25,918 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-11-26 10:41:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 10:41:25,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:25,919 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:25,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:26,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:26,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:26,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -71399842, now seen corresponding path program 2 times [2023-11-26 10:41:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:26,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766042151] [2023-11-26 10:41:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:26,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 10:41:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-26 10:41:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 10:41:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 10:41:26,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766042151] [2023-11-26 10:41:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766042151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246541843] [2023-11-26 10:41:26,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:41:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:26,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:26,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:41:26,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:41:26,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:26,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:41:26,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:41:26,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:41:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246541843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:26,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:41:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 9 [2023-11-26 10:41:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996447297] [2023-11-26 10:41:26,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:41:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:41:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:26,542 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:41:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:26,588 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2023-11-26 10:41:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:41:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-11-26 10:41:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:26,590 INFO L225 Difference]: With dead ends: 63 [2023-11-26 10:41:26,590 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 10:41:26,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:41:26,592 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 95 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 10:41:26,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-26 10:41:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-11-26 10:41:26,599 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 42 [2023-11-26 10:41:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-11-26 10:41:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 10:41:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-26 10:41:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:41:26,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:26,601 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:26,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:26,807 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:26,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1402925949, now seen corresponding path program 3 times [2023-11-26 10:41:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933395971] [2023-11-26 10:41:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:41:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:41:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 10:41:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 10:41:26,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933395971] [2023-11-26 10:41:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933395971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:41:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103475111] [2023-11-26 10:41:26,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:41:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:26,932 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:26,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:41:27,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 10:41:27,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:27,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:27,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 10:41:27,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:41:27,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103475111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:27,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:41:27,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-26 10:41:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758358711] [2023-11-26 10:41:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:27,074 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:41:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:27,104 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-11-26 10:41:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:27,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2023-11-26 10:41:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:27,106 INFO L225 Difference]: With dead ends: 66 [2023-11-26 10:41:27,106 INFO L226 Difference]: Without dead ends: 39 [2023-11-26 10:41:27,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:27,108 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:27,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 56 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-26 10:41:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-11-26 10:41:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-26 10:41:27,115 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 52 [2023-11-26 10:41:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:27,116 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-26 10:41:27,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 10:41:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-26 10:41:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:41:27,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:27,118 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:27,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:27,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:27,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:27,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 608273425, now seen corresponding path program 1 times [2023-11-26 10:41:27,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216938912] [2023-11-26 10:41:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:27,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858141991] [2023-11-26 10:41:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:27,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:27,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:27,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:41:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:27,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:41:27,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-26 10:41:27,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-26 10:41:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:27,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216938912] [2023-11-26 10:41:27,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:27,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858141991] [2023-11-26 10:41:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858141991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:27,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:27,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-26 10:41:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778669542] [2023-11-26 10:41:27,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:27,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:41:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:41:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:27,599 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:41:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:27,632 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2023-11-26 10:41:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:41:27,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2023-11-26 10:41:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:27,633 INFO L225 Difference]: With dead ends: 62 [2023-11-26 10:41:27,634 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 10:41:27,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:27,635 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:27,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 10:41:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-26 10:41:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-11-26 10:41:27,642 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 61 [2023-11-26 10:41:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:27,642 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-11-26 10:41:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:41:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-11-26 10:41:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 10:41:27,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:27,644 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:27,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:27,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:27,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:27,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -344919076, now seen corresponding path program 2 times [2023-11-26 10:41:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:27,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285566378] [2023-11-26 10:41:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:27,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:27,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069613774] [2023-11-26 10:41:27,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:41:27,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:27,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:27,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:41:28,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:41:28,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:28,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:41:28,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 116 proven. 22 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-26 10:41:28,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-26 10:41:28,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285566378] [2023-11-26 10:41:28,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069613774] [2023-11-26 10:41:28,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069613774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:28,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:28,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-26 10:41:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535297010] [2023-11-26 10:41:28,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:41:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:41:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:28,199 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:41:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:28,251 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2023-11-26 10:41:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:41:28,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2023-11-26 10:41:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:28,253 INFO L225 Difference]: With dead ends: 68 [2023-11-26 10:41:28,253 INFO L226 Difference]: Without dead ends: 40 [2023-11-26 10:41:28,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:41:28,254 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:28,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-26 10:41:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-26 10:41:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-11-26 10:41:28,262 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 70 [2023-11-26 10:41:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:28,262 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-11-26 10:41:28,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:41:28,263 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-11-26 10:41:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 10:41:28,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:28,265 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:28,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:41:28,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:28,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1657469393, now seen corresponding path program 3 times [2023-11-26 10:41:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844512382] [2023-11-26 10:41:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:28,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:28,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008057881] [2023-11-26 10:41:28,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:41:28,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:28,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:28,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:28,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:41:28,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 10:41:28,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:41:28,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:41:28,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:41:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-26 10:41:28,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:41:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-11-26 10:41:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844512382] [2023-11-26 10:41:28,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:41:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008057881] [2023-11-26 10:41:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008057881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:41:28,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:41:28,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-26 10:41:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944669213] [2023-11-26 10:41:28,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:41:28,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:41:28,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:41:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:28,673 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:41:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:28,704 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2023-11-26 10:41:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:41:28,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79 [2023-11-26 10:41:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:28,706 INFO L225 Difference]: With dead ends: 69 [2023-11-26 10:41:28,706 INFO L226 Difference]: Without dead ends: 43 [2023-11-26 10:41:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:41:28,707 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-26 10:41:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-26 10:41:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:41:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-26 10:41:28,715 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 79 [2023-11-26 10:41:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:28,715 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-26 10:41:28,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:41:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-26 10:41:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 10:41:28,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:28,717 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:28,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:28,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:41:28,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:28,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 545495682, now seen corresponding path program 4 times [2023-11-26 10:41:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689419805] [2023-11-26 10:41:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:28,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:28,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:41:28,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462577698] [2023-11-26 10:41:28,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 10:41:28,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:41:28,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:41:28,952 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:41:28,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 10:41:29,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 10:41:29,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-26 10:41:29,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:41:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:41:29,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:41:29,566 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:41:29,567 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:41:29,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:41:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:41:29,782 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2023-11-26 10:41:29,787 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:41:29,842 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-26 10:41:29,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated [2023-11-26 10:41:29,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 10:41:29,856 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-11-26 10:41:29,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:41:29 BoogieIcfgContainer [2023-11-26 10:41:29,877 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:41:29,877 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:41:29,877 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:41:29,878 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:41:29,878 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:22" (3/4) ... [2023-11-26 10:41:29,879 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 10:41:29,897 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated [2023-11-26 10:41:29,900 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated [2023-11-26 10:41:29,902 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-26 10:41:29,905 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-11-26 10:41:29,978 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:41:29,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:41:29,979 INFO L158 Benchmark]: Toolchain (without parser) took 8144.87ms. Allocated memory was 161.5MB in the beginning and 232.8MB in the end (delta: 71.3MB). Free memory was 115.9MB in the beginning and 131.5MB in the end (delta: -15.7MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,980 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 161.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:41:29,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.88ms. Allocated memory is still 161.5MB. Free memory was 115.3MB in the beginning and 104.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.86ms. Allocated memory is still 161.5MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,981 INFO L158 Benchmark]: Boogie Preprocessor took 71.67ms. Allocated memory is still 161.5MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,982 INFO L158 Benchmark]: RCFGBuilder took 556.88ms. Allocated memory is still 161.5MB. Free memory was 100.6MB in the beginning and 86.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,982 INFO L158 Benchmark]: TraceAbstraction took 7073.15ms. Allocated memory was 161.5MB in the beginning and 232.8MB in the end (delta: 71.3MB). Free memory was 85.9MB in the beginning and 136.8MB in the end (delta: -50.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,983 INFO L158 Benchmark]: Witness Printer took 101.21ms. Allocated memory is still 232.8MB. Free memory was 136.8MB in the beginning and 131.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 10:41:29,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 161.5MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.88ms. Allocated memory is still 161.5MB. Free memory was 115.3MB in the beginning and 104.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.86ms. Allocated memory is still 161.5MB. Free memory was 104.2MB in the beginning and 102.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.67ms. Allocated memory is still 161.5MB. Free memory was 102.7MB in the beginning and 100.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 556.88ms. Allocated memory is still 161.5MB. Free memory was 100.6MB in the beginning and 86.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7073.15ms. Allocated memory was 161.5MB in the beginning and 232.8MB in the end (delta: 71.3MB). Free memory was 85.9MB in the beginning and 136.8MB in the end (delta: -50.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 101.21ms. Allocated memory is still 232.8MB. Free memory was 136.8MB in the beginning and 131.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[5]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 5) VAL [i=5, x={3:0}, x={3:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=4, ret=-2, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-3, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=-1, cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [x={3:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=4, ret=-2, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-3, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=-1, cnt=2, i=5, ret=-3, x={3:0}, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [ret=-1, temp=1, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret2=-1, ret=-1, temp=0, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret2=-1, ret=-1, temp=0, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret2=-1, ret=-1, temp=0, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret2=-1, ret=-1, temp=0, x={3:0}] [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret2=-1, ret=-1, temp=0, x={3:0}] [L54] COND FALSE !(i<5 -1) VAL [i=4, ret2=-1, ret=-1, temp=0, x={3:0}] [L57] x[5 -1] = temp [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-1, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=4, ret=-1, x={3:0}, x={3:0}] [L28] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-1, x={3:0}, x={3:0}] [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-1, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=5, ret=-1, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-1, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=0, cnt=2, i=5, ret=-1, x={3:0}, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [ret2=-1, ret=-1, temp=0, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [ret2=-1, ret5=0, ret=-1, temp=0, x={3:0}] [L61] reach_error() VAL [ret2=-1, ret5=0, ret=-1, temp=0, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 12, TraceHistogramMax: 15, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 594 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 348 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 246 mSDtfsCounter, 185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=11, 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, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 882 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 910 ConstructedInterpolants, 0 QuantifiedInterpolants, 1066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1927 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 1872/2184 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-26 10:41:30,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_772bf16e-3735-4bcf-8d91-5d6a53227a32/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE