./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/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_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/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_cfce4711-48f3-44d7-846b-4aab7afc3e06/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 e1856ea979a515682843ea065e3d41725035a700c47302906a364d3e5d5e532f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:42,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:42,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:42:42,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:42,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:42,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:42,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:42,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:42,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:42,221 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:42,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:42,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:42,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:42,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:42,226 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:42,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:42,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:42:42,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:42:42,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:42,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:42:42,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:42,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:42:42,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:42,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:42:42,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:42:42,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:42,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:42,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:42,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:42,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:42,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:42,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:42,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:42,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:42,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:42:42,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:42,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:42,237 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:42,237 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:42,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:42:42,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:42,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:42,238 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_cfce4711-48f3-44d7-846b-4aab7afc3e06/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1856ea979a515682843ea065e3d41725035a700c47302906a364d3e5d5e532f [2023-11-26 10:42:42,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:42,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:42,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:42,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:42,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:42,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i [2023-11-26 10:42:45,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:46,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:46,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i [2023-11-26 10:42:46,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/data/7d65f79b2/25268dfaef6c43dbad36ec799be099c3/FLAGf68c28735 [2023-11-26 10:42:46,293 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/data/7d65f79b2/25268dfaef6c43dbad36ec799be099c3 [2023-11-26 10:42:46,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:46,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:46,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:46,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:46,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:46,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1975ad35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46, skipping insertion in model container [2023-11-26 10:42:46,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:46,541 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_cfce4711-48f3-44d7-846b-4aab7afc3e06/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i[915,928] [2023-11-26 10:42:46,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,631 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:46,645 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_cfce4711-48f3-44d7-846b-4aab7afc3e06/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-84.i[915,928] [2023-11-26 10:42:46,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,709 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:46,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46 WrapperNode [2023-11-26 10:42:46,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:46,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:46,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:46,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:46,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,784 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 236 [2023-11-26 10:42:46,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:46,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:46,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:46,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:46,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,825 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:42:46,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:46,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:46,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:46,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:46,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:46,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:46,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:46,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:42:46,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:42:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:46,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:47,082 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:47,083 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:47,600 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:47,633 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:47,633 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:42:47,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:47 BoogieIcfgContainer [2023-11-26 10:42:47,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:47,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:47,636 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:47,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:47,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:46" (1/3) ... [2023-11-26 10:42:47,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb24d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:47, skipping insertion in model container [2023-11-26 10:42:47,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (2/3) ... [2023-11-26 10:42:47,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb24d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:47, skipping insertion in model container [2023-11-26 10:42:47,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:47" (3/3) ... [2023-11-26 10:42:47,647 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-84.i [2023-11-26 10:42:47,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:47,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:42:47,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:47,722 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;@8f79a0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:47,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:42:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-26 10:42:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-26 10:42:47,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:47,747 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:47,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:47,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1800682432, now seen corresponding path program 1 times [2023-11-26 10:42:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383241387] [2023-11-26 10:42:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383241387] [2023-11-26 10:42:47,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:42:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675178826] [2023-11-26 10:42:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:47,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:47,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:47,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:48,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:42:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:48,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:42:48,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-26 10:42:48,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675178826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:48,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115819121] [2023-11-26 10:42:48,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:48,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:42:48,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:48,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:42:48,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:42:48,381 INFO L87 Difference]: Start difference. First operand has 91 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 56 states have internal predecessors, (80), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-26 10:42:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:48,457 INFO L93 Difference]: Finished difference Result 179 states and 323 transitions. [2023-11-26 10:42:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:42:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 204 [2023-11-26 10:42:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:48,472 INFO L225 Difference]: With dead ends: 179 [2023-11-26 10:42:48,472 INFO L226 Difference]: Without dead ends: 89 [2023-11-26 10:42:48,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 203 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 10:42:48,486 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:48,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:42:48,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-26 10:42:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-26 10:42:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-26 10:42:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 141 transitions. [2023-11-26 10:42:48,554 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 141 transitions. Word has length 204 [2023-11-26 10:42:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:48,554 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 141 transitions. [2023-11-26 10:42:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-26 10:42:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 141 transitions. [2023-11-26 10:42:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-26 10:42:48,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:48,561 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:48,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:42:48,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:42:48,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:42:48,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 44414078, now seen corresponding path program 1 times [2023-11-26 10:42:48,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670365166] [2023-11-26 10:42:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:48,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:48,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:42:48,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990799593] [2023-11-26 10:42:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:48,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:48,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:48,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:48,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:42:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:49,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:42:49,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-26 10:43:02,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:02,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:02,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670365166] [2023-11-26 10:43:02,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:02,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990799593] [2023-11-26 10:43:02,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990799593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:02,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:02,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570126069] [2023-11-26 10:43:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:02,884 INFO L87 Difference]: Start difference. First operand 89 states and 141 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:07,811 INFO L93 Difference]: Finished difference Result 227 states and 351 transitions. [2023-11-26 10:43:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:07,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 204 [2023-11-26 10:43:07,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:07,816 INFO L225 Difference]: With dead ends: 227 [2023-11-26 10:43:07,817 INFO L226 Difference]: Without dead ends: 139 [2023-11-26 10:43:07,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:07,820 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 109 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:07,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 490 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 10:43:07,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-26 10:43:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 122. [2023-11-26 10:43:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 83 states have internal predecessors, (115), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:43:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 189 transitions. [2023-11-26 10:43:07,854 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 189 transitions. Word has length 204 [2023-11-26 10:43:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:07,856 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 189 transitions. [2023-11-26 10:43:07,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 189 transitions. [2023-11-26 10:43:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-26 10:43:07,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:07,862 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:07,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:43:08,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:08,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:08,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash 745478656, now seen corresponding path program 1 times [2023-11-26 10:43:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407860206] [2023-11-26 10:43:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:08,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486335169] [2023-11-26 10:43:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:08,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:08,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:08,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:08,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:08,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-26 10:43:22,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407860206] [2023-11-26 10:43:22,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486335169] [2023-11-26 10:43:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486335169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967874624] [2023-11-26 10:43:22,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:22,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:22,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:22,908 INFO L87 Difference]: Start difference. First operand 122 states and 189 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:28,488 INFO L93 Difference]: Finished difference Result 241 states and 372 transitions. [2023-11-26 10:43:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:28,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 204 [2023-11-26 10:43:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:28,492 INFO L225 Difference]: With dead ends: 241 [2023-11-26 10:43:28,493 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 10:43:28,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:28,495 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 90 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:28,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 503 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 10:43:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 10:43:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2023-11-26 10:43:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 78 states have internal predecessors, (106), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-26 10:43:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 180 transitions. [2023-11-26 10:43:28,520 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 180 transitions. Word has length 204 [2023-11-26 10:43:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:28,521 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 180 transitions. [2023-11-26 10:43:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:28,521 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 180 transitions. [2023-11-26 10:43:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-26 10:43:28,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:28,525 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:28,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:28,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:28,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:28,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash 262396944, now seen corresponding path program 1 times [2023-11-26 10:43:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:28,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243614437] [2023-11-26 10:43:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:28,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:28,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081595646] [2023-11-26 10:43:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:28,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:28,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:28,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:28,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:28,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-26 10:43:29,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243614437] [2023-11-26 10:43:29,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081595646] [2023-11-26 10:43:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081595646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:29,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521423252] [2023-11-26 10:43:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:29,729 INFO L87 Difference]: Start difference. First operand 117 states and 180 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:30,072 INFO L93 Difference]: Finished difference Result 288 states and 433 transitions. [2023-11-26 10:43:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 205 [2023-11-26 10:43:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:30,078 INFO L225 Difference]: With dead ends: 288 [2023-11-26 10:43:30,078 INFO L226 Difference]: Without dead ends: 172 [2023-11-26 10:43:30,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:43:30,080 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 82 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:30,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 512 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:43:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-26 10:43:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 154. [2023-11-26 10:43:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 108 states have (on average 1.3796296296296295) internal successors, (149), 111 states have internal predecessors, (149), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-26 10:43:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 231 transitions. [2023-11-26 10:43:30,111 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 231 transitions. Word has length 205 [2023-11-26 10:43:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:30,112 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 231 transitions. [2023-11-26 10:43:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 231 transitions. [2023-11-26 10:43:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-26 10:43:30,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:30,116 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:30,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:30,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:30,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:30,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 963461522, now seen corresponding path program 1 times [2023-11-26 10:43:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357460331] [2023-11-26 10:43:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:30,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:30,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049077756] [2023-11-26 10:43:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:30,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:30,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:30,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:30,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:43:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:30,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:30,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-26 10:43:30,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:30,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357460331] [2023-11-26 10:43:30,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049077756] [2023-11-26 10:43:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049077756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:43:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549869306] [2023-11-26 10:43:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:30,887 INFO L87 Difference]: Start difference. First operand 154 states and 231 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:31,112 INFO L93 Difference]: Finished difference Result 299 states and 449 transitions. [2023-11-26 10:43:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 205 [2023-11-26 10:43:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:31,117 INFO L225 Difference]: With dead ends: 299 [2023-11-26 10:43:31,117 INFO L226 Difference]: Without dead ends: 153 [2023-11-26 10:43:31,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:43:31,119 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 71 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:31,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 517 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:43:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-26 10:43:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-11-26 10:43:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 103 states have (on average 1.3592233009708738) internal successors, (140), 106 states have internal predecessors, (140), 41 states have call successors, (41), 4 states have call predecessors, (41), 4 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-26 10:43:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 222 transitions. [2023-11-26 10:43:31,152 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 222 transitions. Word has length 205 [2023-11-26 10:43:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:31,153 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 222 transitions. [2023-11-26 10:43:31,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-26 10:43:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 222 transitions. [2023-11-26 10:43:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-26 10:43:31,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:31,158 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:31,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 10:43:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:31,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:31,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:31,367 INFO L85 PathProgramCache]: Analyzing trace with hash 849202958, now seen corresponding path program 1 times [2023-11-26 10:43:31,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156544143] [2023-11-26 10:43:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:31,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313951549] [2023-11-26 10:43:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:31,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:31,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:31,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:31,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfce4711-48f3-44d7-846b-4aab7afc3e06/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:43:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:31,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:43:31,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-26 10:43:32,879 INFO L327 TraceCheckSpWp]: Computing backward predicates...