./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/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 6afecf8b719ebabe0f5d950a91928c70dceb2d3c076eae572c5fd9dee7e38018 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:01,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:01,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:48:01,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:01,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:01,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:01,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:01,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:01,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:01,879 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:01,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:01,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:01,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:01,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:01,883 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:01,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:01,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:01,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:01,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:01,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:01,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:01,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:01,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:01,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:01,888 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:01,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:01,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:01,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:01,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:01,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:01,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:01,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:01,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:01,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:01,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:01,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:01,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:01,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:01,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:01,894 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:01,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:01,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:01,895 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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6afecf8b719ebabe0f5d950a91928c70dceb2d3c076eae572c5fd9dee7e38018 [2023-11-26 10:48:02,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:02,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:02,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:02,218 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:02,219 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:02,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i [2023-11-26 10:48:05,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:05,777 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:05,779 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i [2023-11-26 10:48:05,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/data/421cfd3ad/55726f6d2c544e04ad6b094d217533d3/FLAG6b8d545ed [2023-11-26 10:48:05,807 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/data/421cfd3ad/55726f6d2c544e04ad6b094d217533d3 [2023-11-26 10:48:05,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:05,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:05,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:05,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:05,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:05,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:05" (1/1) ... [2023-11-26 10:48:05,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70959ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:05, skipping insertion in model container [2023-11-26 10:48:05,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:05" (1/1) ... [2023-11-26 10:48:05,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:06,050 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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i[913,926] [2023-11-26 10:48:06,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:06,117 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:06,130 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_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i[913,926] [2023-11-26 10:48:06,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:06,182 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:06,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06 WrapperNode [2023-11-26 10:48:06,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:06,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:06,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:06,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:06,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,251 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 126 [2023-11-26 10:48:06,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:06,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:06,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:06,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:06,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,287 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 10:48:06,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,309 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:06,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:06,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:06,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:06,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (1/1) ... [2023-11-26 10:48:06,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:06,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:06,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:48:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:48:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:06,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:06,573 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:06,575 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:06,959 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:07,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:07,005 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:48:07,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:07 BoogieIcfgContainer [2023-11-26 10:48:07,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:07,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:07,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:07,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:07,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:05" (1/3) ... [2023-11-26 10:48:07,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104364e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:07, skipping insertion in model container [2023-11-26 10:48:07,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:06" (2/3) ... [2023-11-26 10:48:07,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104364e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:07, skipping insertion in model container [2023-11-26 10:48:07,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:07" (3/3) ... [2023-11-26 10:48:07,016 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-85.i [2023-11-26 10:48:07,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:07,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:48:07,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:07,097 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;@b7bb4fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:07,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:48:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:48:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 10:48:07,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:07,119 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:07,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:07,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:07,126 INFO L85 PathProgramCache]: Analyzing trace with hash -682589884, now seen corresponding path program 1 times [2023-11-26 10:48:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578259545] [2023-11-26 10:48:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:07,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:07,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578259545] [2023-11-26 10:48:07,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:48:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967460129] [2023-11-26 10:48:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:07,456 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:07,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:48:07,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-26 10:48:07,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967460129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:07,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:07,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872519061] [2023-11-26 10:48:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:48:07,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:48:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:48:07,841 INFO L87 Difference]: Start difference. First operand has 53 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 28 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 10:48:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:07,884 INFO L93 Difference]: Finished difference Result 103 states and 187 transitions. [2023-11-26 10:48:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:48:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 135 [2023-11-26 10:48:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:07,898 INFO L225 Difference]: With dead ends: 103 [2023-11-26 10:48:07,899 INFO L226 Difference]: Without dead ends: 51 [2023-11-26 10:48:07,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:48:07,912 INFO L413 NwaCegarLoop]: 75 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, 75 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 10:48:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:48:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-26 10:48:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-26 10:48:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:48:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions. [2023-11-26 10:48:07,972 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 135 [2023-11-26 10:48:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:07,973 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 78 transitions. [2023-11-26 10:48:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-26 10:48:07,973 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions. [2023-11-26 10:48:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-26 10:48:07,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:07,978 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:07,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:48:08,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:48:08,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:08,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1279187578, now seen corresponding path program 1 times [2023-11-26 10:48:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028588813] [2023-11-26 10:48:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:08,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598661048] [2023-11-26 10:48:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:08,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:08,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:08,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:08,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:48:08,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 256 proven. 57 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2023-11-26 10:48:08,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-26 10:48:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:09,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028588813] [2023-11-26 10:48:09,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:48:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598661048] [2023-11-26 10:48:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598661048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:09,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:48:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-26 10:48:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472228963] [2023-11-26 10:48:09,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:48:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:48:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:48:09,165 INFO L87 Difference]: Start difference. First operand 51 states and 78 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-26 10:48:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:09,778 INFO L93 Difference]: Finished difference Result 166 states and 244 transitions. [2023-11-26 10:48:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 10:48:09,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 135 [2023-11-26 10:48:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:09,789 INFO L225 Difference]: With dead ends: 166 [2023-11-26 10:48:09,789 INFO L226 Difference]: Without dead ends: 116 [2023-11-26 10:48:09,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:48:09,798 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 89 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:09,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 207 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:48:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-26 10:48:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2023-11-26 10:48:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 10:48:09,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2023-11-26 10:48:09,839 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 135 [2023-11-26 10:48:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:09,841 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2023-11-26 10:48:09,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2023-11-26 10:48:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2023-11-26 10:48:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-26 10:48:09,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:09,853 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:09,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:10,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:48:10,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1000663725, now seen corresponding path program 1 times [2023-11-26 10:48:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798154017] [2023-11-26 10:48:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:10,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:48:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929794299] [2023-11-26 10:48:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:10,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:10,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ecc7957-feba-4e33-9f50-3aaf3cdb4736/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:10,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 10:48:10,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 479 proven. 183 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-11-26 10:48:12,920 INFO L327 TraceCheckSpWp]: Computing backward predicates...