./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.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_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/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_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/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_b799c032-4f07-4541-b599-53b0a81b8561/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 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:10,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:10,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:57:10,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:10,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:10,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:10,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:10,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:10,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:10,631 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:10,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:10,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:10,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:10,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:10,634 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:10,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:10,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:10,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:10,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:57:10,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:10,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:10,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:10,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:10,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:10,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:10,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:10,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:10,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:10,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:10,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:10,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:10,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:10,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:10,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:10,645 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:10,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:57:10,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:57:10,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:10,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:10,647 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:10,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:10,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:10,649 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_b799c032-4f07-4541-b599-53b0a81b8561/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 [2023-11-26 11:57:10,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:10,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:10,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:10,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:10,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:10,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:14,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:14,471 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:14,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:14,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/f73828912/f6f1e55bbfda4a568f75cf53ebaa812f/FLAGeda461029 [2023-11-26 11:57:14,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/f73828912/f6f1e55bbfda4a568f75cf53ebaa812f [2023-11-26 11:57:14,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:14,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:14,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:14,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:14,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:14,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0ec2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14, skipping insertion in model container [2023-11-26 11:57:14,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:14,725 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_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-26 11:57:14,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:14,849 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_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-26 11:57:14,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:14,907 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:14,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14 WrapperNode [2023-11-26 11:57:14,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:14,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:14,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:14,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:14,986 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 154 [2023-11-26 11:57:14,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:14,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:14,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:14,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:15,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,048 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:57:15,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:15,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:15,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:15,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:15,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (1/1) ... [2023-11-26 11:57:15,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:15,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:15,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:15,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:57:15,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:15,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:15,309 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:15,313 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:15,782 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:15,844 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:15,844 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:15,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15 BoogieIcfgContainer [2023-11-26 11:57:15,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:15,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:15,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:15,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:15,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:14" (1/3) ... [2023-11-26 11:57:15,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebdc648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:14" (2/3) ... [2023-11-26 11:57:15,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebdc648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:15, skipping insertion in model container [2023-11-26 11:57:15,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15" (3/3) ... [2023-11-26 11:57:15,854 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:15,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:15,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:57:15,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:15,941 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;@c86a314, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:15,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:57:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:57:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-26 11:57:15,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:15,963 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:15,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:15,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1665614243, now seen corresponding path program 1 times [2023-11-26 11:57:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:15,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966609196] [2023-11-26 11:57:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:16,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966609196] [2023-11-26 11:57:16,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 11:57:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487960962] [2023-11-26 11:57:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:16,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:16,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:57:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:16,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:57:16,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-11-26 11:57:16,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:16,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487960962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:16,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:16,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755389870] [2023-11-26 11:57:16,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:57:16,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:57:16,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:16,602 INFO L87 Difference]: Start difference. First operand has 63 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:57:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:16,662 INFO L93 Difference]: Finished difference Result 123 states and 217 transitions. [2023-11-26 11:57:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:57:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2023-11-26 11:57:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:16,676 INFO L225 Difference]: With dead ends: 123 [2023-11-26 11:57:16,676 INFO L226 Difference]: Without dead ends: 61 [2023-11-26 11:57:16,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:16,685 INFO L413 NwaCegarLoop]: 93 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, 93 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:16,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-26 11:57:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-26 11:57:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.5) internal successors, (66), 44 states have internal predecessors, (66), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:57:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 96 transitions. [2023-11-26 11:57:16,754 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 96 transitions. Word has length 101 [2023-11-26 11:57:16,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:16,755 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 96 transitions. [2023-11-26 11:57:16,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:57:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 96 transitions. [2023-11-26 11:57:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-26 11:57:16,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:16,764 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:16,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:16,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -994212005, now seen corresponding path program 1 times [2023-11-26 11:57:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608612474] [2023-11-26 11:57:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:16,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:17,060 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:17,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777166893] [2023-11-26 11:57:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:17,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:17,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:57:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:17,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:17,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-26 11:57:17,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:17,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:17,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608612474] [2023-11-26 11:57:17,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777166893] [2023-11-26 11:57:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777166893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:17,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426838923] [2023-11-26 11:57:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,535 INFO L87 Difference]: Start difference. First operand 61 states and 96 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:17,631 INFO L93 Difference]: Finished difference Result 181 states and 286 transitions. [2023-11-26 11:57:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 101 [2023-11-26 11:57:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:17,635 INFO L225 Difference]: With dead ends: 181 [2023-11-26 11:57:17,636 INFO L226 Difference]: Without dead ends: 121 [2023-11-26 11:57:17,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:17,638 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 40 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:17,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 168 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:57:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-26 11:57:17,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-11-26 11:57:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 86 states have internal predecessors, (126), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-26 11:57:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 186 transitions. [2023-11-26 11:57:17,672 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 186 transitions. Word has length 101 [2023-11-26 11:57:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:17,673 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 186 transitions. [2023-11-26 11:57:17,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 186 transitions. [2023-11-26 11:57:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-26 11:57:17,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:17,676 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:17,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:17,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:17,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 166742404, now seen corresponding path program 1 times [2023-11-26 11:57:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74045803] [2023-11-26 11:57:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:17,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:17,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549711698] [2023-11-26 11:57:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:17,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:17,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:17,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:57:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-26 11:57:18,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74045803] [2023-11-26 11:57:18,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549711698] [2023-11-26 11:57:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549711698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089884566] [2023-11-26 11:57:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,113 INFO L87 Difference]: Start difference. First operand 119 states and 186 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:18,216 INFO L93 Difference]: Finished difference Result 351 states and 550 transitions. [2023-11-26 11:57:18,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:18,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-26 11:57:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:18,225 INFO L225 Difference]: With dead ends: 351 [2023-11-26 11:57:18,226 INFO L226 Difference]: Without dead ends: 233 [2023-11-26 11:57:18,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,232 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 84 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:18,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 242 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:57:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-26 11:57:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2023-11-26 11:57:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 166 states have (on average 1.4337349397590362) internal successors, (238), 166 states have internal predecessors, (238), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 11:57:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 358 transitions. [2023-11-26 11:57:18,278 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 358 transitions. Word has length 102 [2023-11-26 11:57:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:18,279 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 358 transitions. [2023-11-26 11:57:18,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 358 transitions. [2023-11-26 11:57:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-26 11:57:18,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:18,282 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:18,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:18,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:18,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash -697937686, now seen corresponding path program 1 times [2023-11-26 11:57:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:18,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641808279] [2023-11-26 11:57:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:18,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:18,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804230017] [2023-11-26 11:57:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:18,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:18,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:18,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:57:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:18,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:57:18,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-26 11:57:18,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641808279] [2023-11-26 11:57:18,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804230017] [2023-11-26 11:57:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804230017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:57:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805544698] [2023-11-26 11:57:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:57:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:57:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,769 INFO L87 Difference]: Start difference. First operand 231 states and 358 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:18,828 INFO L93 Difference]: Finished difference Result 567 states and 876 transitions. [2023-11-26 11:57:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:57:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 102 [2023-11-26 11:57:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:18,833 INFO L225 Difference]: With dead ends: 567 [2023-11-26 11:57:18,833 INFO L226 Difference]: Without dead ends: 337 [2023-11-26 11:57:18,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:57:18,836 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 37 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:18,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 204 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:57:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-26 11:57:18,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 267. [2023-11-26 11:57:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 202 states have (on average 1.4356435643564356) internal successors, (290), 202 states have internal predecessors, (290), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-26 11:57:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 410 transitions. [2023-11-26 11:57:18,895 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 410 transitions. Word has length 102 [2023-11-26 11:57:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:18,896 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 410 transitions. [2023-11-26 11:57:18,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 410 transitions. [2023-11-26 11:57:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:57:18,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:18,899 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:18,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1111361172, now seen corresponding path program 1 times [2023-11-26 11:57:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379834651] [2023-11-26 11:57:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:19,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301166594] [2023-11-26 11:57:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:19,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:19,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:19,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:57:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:19,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:57:19,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-26 11:57:20,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379834651] [2023-11-26 11:57:20,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301166594] [2023-11-26 11:57:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301166594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:20,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:57:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212275650] [2023-11-26 11:57:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:20,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:20,146 INFO L87 Difference]: Start difference. First operand 267 states and 410 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:57:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:20,671 INFO L93 Difference]: Finished difference Result 939 states and 1445 transitions. [2023-11-26 11:57:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:20,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 103 [2023-11-26 11:57:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:20,679 INFO L225 Difference]: With dead ends: 939 [2023-11-26 11:57:20,679 INFO L226 Difference]: Without dead ends: 673 [2023-11-26 11:57:20,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:57:20,681 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 170 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:20,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 447 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-11-26 11:57:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 661. [2023-11-26 11:57:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 500 states have (on average 1.446) internal successors, (723), 500 states have internal predecessors, (723), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 150 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-26 11:57:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1023 transitions. [2023-11-26 11:57:20,774 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1023 transitions. Word has length 103 [2023-11-26 11:57:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:20,775 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1023 transitions. [2023-11-26 11:57:20,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:57:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1023 transitions. [2023-11-26 11:57:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:57:20,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:20,777 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:20,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:20,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:20,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:20,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2096387530, now seen corresponding path program 1 times [2023-11-26 11:57:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323699279] [2023-11-26 11:57:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:21,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:21,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151889791] [2023-11-26 11:57:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:21,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:21,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:21,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:57:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:21,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:57:21,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 287 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-26 11:57:21,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 87 proven. 30 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-11-26 11:57:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323699279] [2023-11-26 11:57:23,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151889791] [2023-11-26 11:57:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151889791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:23,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:57:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-26 11:57:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135252831] [2023-11-26 11:57:23,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:57:23,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:57:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:57:23,021 INFO L87 Difference]: Start difference. First operand 661 states and 1023 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-26 11:57:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:24,087 INFO L93 Difference]: Finished difference Result 1159 states and 1729 transitions. [2023-11-26 11:57:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:57:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) Word has length 103 [2023-11-26 11:57:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:24,092 INFO L225 Difference]: With dead ends: 1159 [2023-11-26 11:57:24,092 INFO L226 Difference]: Without dead ends: 499 [2023-11-26 11:57:24,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=437, Invalid=969, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 11:57:24,095 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 240 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:24,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 276 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-26 11:57:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2023-11-26 11:57:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 360 states have (on average 1.363888888888889) internal successors, (491), 360 states have internal predecessors, (491), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-26 11:57:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 671 transitions. [2023-11-26 11:57:24,169 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 671 transitions. Word has length 103 [2023-11-26 11:57:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:24,169 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 671 transitions. [2023-11-26 11:57:24,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (23), 3 states have call predecessors, (23), 9 states have return successors, (24), 7 states have call predecessors, (24), 5 states have call successors, (24) [2023-11-26 11:57:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 671 transitions. [2023-11-26 11:57:24,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:57:24,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:24,171 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:24,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:24,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:24,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:24,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash 494501675, now seen corresponding path program 1 times [2023-11-26 11:57:24,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:24,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062664079] [2023-11-26 11:57:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:24,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740802459] [2023-11-26 11:57:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:24,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:24,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:24,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:57:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:24,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:57:24,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-26 11:57:24,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:24,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:24,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062664079] [2023-11-26 11:57:24,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:57:24,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740802459] [2023-11-26 11:57:24,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740802459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:24,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:24,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:57:24,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454962553] [2023-11-26 11:57:24,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:24,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:24,692 INFO L87 Difference]: Start difference. First operand 475 states and 671 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:24,986 INFO L93 Difference]: Finished difference Result 940 states and 1332 transitions. [2023-11-26 11:57:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:57:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2023-11-26 11:57:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:24,996 INFO L225 Difference]: With dead ends: 940 [2023-11-26 11:57:24,997 INFO L226 Difference]: Without dead ends: 701 [2023-11-26 11:57:24,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:25,000 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 89 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:25,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 533 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-11-26 11:57:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 550. [2023-11-26 11:57:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 435 states have (on average 1.3770114942528735) internal successors, (599), 435 states have internal predecessors, (599), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-26 11:57:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 779 transitions. [2023-11-26 11:57:25,091 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 779 transitions. Word has length 103 [2023-11-26 11:57:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:25,092 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 779 transitions. [2023-11-26 11:57:25,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:57:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 779 transitions. [2023-11-26 11:57:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 11:57:25,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:25,094 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:25,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:25,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1416990502, now seen corresponding path program 1 times [2023-11-26 11:57:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:25,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517763125] [2023-11-26 11:57:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:25,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:57:25,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710281988] [2023-11-26 11:57:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:25,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:25,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:25,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:57:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:57:25,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:57:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:57:26,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:57:26,013 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:57:26,014 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:57:26,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:26,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 11:57:26,226 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:26,230 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:57:26,303 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-26 11:57:26,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-26 11:57:26,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:57:26 BoogieIcfgContainer [2023-11-26 11:57:26,325 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:57:26,325 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:57:26,325 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:57:26,326 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:57:26,326 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:15" (3/4) ... [2023-11-26 11:57:26,329 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:57:26,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:57:26,331 INFO L158 Benchmark]: Toolchain (without parser) took 11817.88ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 128.4MB in the beginning and 160.7MB in the end (delta: -32.3MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,331 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 174.1MB. Free memory was 136.8MB in the beginning and 136.7MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:57:26,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.06ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 114.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.85ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 110.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,332 INFO L158 Benchmark]: Boogie Preprocessor took 99.13ms. Allocated memory is still 174.1MB. Free memory was 110.6MB in the beginning and 105.5MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,333 INFO L158 Benchmark]: RCFGBuilder took 753.60ms. Allocated memory is still 174.1MB. Free memory was 105.5MB in the beginning and 123.8MB in the end (delta: -18.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,333 INFO L158 Benchmark]: TraceAbstraction took 10476.96ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 123.1MB in the beginning and 160.7MB in the end (delta: -37.6MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2023-11-26 11:57:26,333 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 260.0MB. Free memory is still 160.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:57:26,335 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 174.1MB. Free memory was 136.8MB in the beginning and 136.7MB in the end (delta: 33.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.06ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 114.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.85ms. Allocated memory is still 174.1MB. Free memory was 114.4MB in the beginning and 110.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.13ms. Allocated memory is still 174.1MB. Free memory was 110.6MB in the beginning and 105.5MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 753.60ms. Allocated memory is still 174.1MB. Free memory was 105.5MB in the beginning and 123.8MB in the end (delta: -18.3MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10476.96ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 123.1MB in the beginning and 160.7MB in the end (delta: -37.6MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 260.0MB. Free memory is still 160.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 117, overapproximation of bitwiseOr at line 80. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -64; [L23] unsigned char var_1_3 = 1; [L24] signed char var_1_5 = -32; [L25] unsigned short int var_1_6 = 256; [L26] unsigned long int var_1_10 = 256; [L27] double var_1_12 = 8.2; [L28] signed char var_1_13 = 16; [L29] signed char var_1_14 = 10; [L30] double var_1_15 = 199.125; [L31] double var_1_16 = 9.4; [L32] double var_1_17 = 9999999999999.6; [L33] unsigned char var_1_20 = 32; [L34] unsigned char var_1_21 = 128; [L35] unsigned char var_1_22 = 64; [L36] unsigned long int var_1_23 = 64; [L37] unsigned long int last_1_var_1_10 = 256; [L38] unsigned char last_1_var_1_20 = 32; [L121] isInitial = 1 [L122] FCALL initially() [L123] COND TRUE 1 [L124] CALL updateLastVariables() [L113] last_1_var_1_10 = var_1_10 [L114] last_1_var_1_20 = var_1_20 [L124] RET updateLastVariables() [L125] CALL updateVariables() [L88] var_1_3 = __VERIFIER_nondet_uchar() [L89] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L89] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_5=-32, var_1_6=256] [L90] CALL assume_abort_if_not(var_1_3 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L90] RET assume_abort_if_not(var_1_3 <= 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=-32, var_1_6=256] [L91] var_1_5 = __VERIFIER_nondet_char() [L92] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L92] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L93] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L93] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=16, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L94] var_1_13 = __VERIFIER_nondet_char() [L95] CALL assume_abort_if_not(var_1_13 >= -1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L95] RET assume_abort_if_not(var_1_13 >= -1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L96] CALL assume_abort_if_not(var_1_13 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L96] RET assume_abort_if_not(var_1_13 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=10, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L97] var_1_14 = __VERIFIER_nondet_char() [L98] CALL assume_abort_if_not(var_1_14 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L98] RET assume_abort_if_not(var_1_14 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L99] CALL assume_abort_if_not(var_1_14 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L99] RET assume_abort_if_not(var_1_14 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_15=1593/8, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L100] var_1_15 = __VERIFIER_nondet_double() [L101] CALL assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L101] RET assume_abort_if_not((var_1_15 >= -922337.2036854776000e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L102] CALL assume_abort_if_not(var_1_15 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L102] RET assume_abort_if_not(var_1_15 != 0.0F) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_16=47/5, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L103] var_1_16 = __VERIFIER_nondet_double() [L104] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L104] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=128, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L105] var_1_21 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_21 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L106] RET assume_abort_if_not(var_1_21 >= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L107] CALL assume_abort_if_not(var_1_21 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L107] RET assume_abort_if_not(var_1_21 <= 254) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=64, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L108] var_1_22 = __VERIFIER_nondet_uchar() [L109] CALL assume_abort_if_not(var_1_22 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L109] RET assume_abort_if_not(var_1_22 >= 0) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L110] CALL assume_abort_if_not(var_1_22 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L110] RET assume_abort_if_not(var_1_22 <= 127) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L125] RET updateVariables() [L126] CALL step() [L42] COND FALSE !(\read(var_1_3)) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L47] signed long int stepLocal_2 = var_1_5 * var_1_13; VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=32, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L48] COND TRUE stepLocal_2 > last_1_var_1_10 [L49] var_1_20 = ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L51] COND FALSE !((((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L56] unsigned char stepLocal_1 = var_1_17 <= var_1_17; VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=41/5, var_1_13=12, var_1_14=119, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L57] COND FALSE !(stepLocal_1 || var_1_3) [L62] var_1_12 = var_1_16 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L64] COND FALSE !(99999.8f < var_1_17) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L75] COND FALSE !((var_1_17 + var_1_12) <= var_1_17) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L80] EXPR var_1_6 ^ var_1_20 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L80] unsigned long int stepLocal_0 = (var_1_6 ^ var_1_20) + var_1_23; [L81] COND TRUE var_1_20 <= stepLocal_0 VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_0=328, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L82] COND FALSE !(var_1_12 == var_1_12) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, stepLocal_0=328, stepLocal_1=0, stepLocal_2=288, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L126] RET step() [L127] CALL, EXPR property() [L117] EXPR (((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1) VAL [isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L117-L118] return (((((((99999.8f < var_1_17) ? ((! var_1_3) ? ((var_1_17 >= (var_1_17 / 2.5f)) ? (var_1_3 ? (var_1_1 == ((signed char) var_1_5)) : (var_1_1 == ((signed char) var_1_5))) : 1) : 1) : 1) && (var_1_3 ? (((last_1_var_1_10 + (var_1_5 + last_1_var_1_20)) >= last_1_var_1_20) ? (var_1_6 == ((unsigned short int) last_1_var_1_20)) : 1) : 1)) && ((var_1_20 <= ((var_1_6 ^ var_1_20) + var_1_23)) ? ((var_1_12 == var_1_12) ? (var_1_10 == ((unsigned long int) 0u)) : 1) : 1)) && (((var_1_17 <= var_1_17) || var_1_3) ? (((var_1_17 / var_1_15) > 25.25) ? (var_1_12 == ((double) 128.5)) : 1) : (var_1_12 == ((double) var_1_16)))) && (((((((var_1_14 - var_1_20)) < (var_1_5)) ? ((var_1_14 - var_1_20)) : (var_1_5))) < var_1_20) ? (var_1_3 ? (var_1_17 == ((double) 128.1)) : 1) : 1)) && (((var_1_5 * var_1_13) > last_1_var_1_10) ? (var_1_20 == ((unsigned char) ((((((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) < 0 ) ? -(((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))) : (((((var_1_21 - var_1_14)) > ((var_1_22 + 8))) ? ((var_1_21 - var_1_14)) : ((var_1_22 + 8)))))))) : 1)) && (((var_1_17 + var_1_12) <= var_1_17) ? ((var_1_6 >= var_1_6) ? (var_1_23 == ((unsigned long int) var_1_20)) : 1) : 1) ; [L127] RET, EXPR property() [L127] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, last_1_var_1_20=32, var_1_10=256, var_1_12=2, var_1_13=12, var_1_14=119, var_1_16=2, var_1_17=49999999999998/5, var_1_1=-64, var_1_20=8, var_1_21=127, var_1_22=0, var_1_23=64, var_1_3=0, var_1_5=24, var_1_6=256] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 8, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 660 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 660 mSDsluCounter, 1963 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1228 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 710 IncrementalHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 735 mSDtfsCounter, 710 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 834 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661occurred in iteration=5, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 261 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 2995 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1738 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 3309/3360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:57:26,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/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_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/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 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:57:28,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:57:29,057 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:57:29,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:57:29,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:57:29,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:57:29,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:57:29,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:57:29,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:57:29,097 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:57:29,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:57:29,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:57:29,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:57:29,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:57:29,101 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:57:29,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:57:29,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:57:29,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:57:29,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:57:29,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:57:29,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:57:29,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:57:29,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:57:29,107 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:57:29,107 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:57:29,108 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:57:29,108 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:57:29,109 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:57:29,109 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:57:29,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:57:29,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:57:29,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:57:29,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:57:29,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:29,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:57:29,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:57:29,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:57:29,115 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:57:29,115 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:57:29,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:57:29,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:57:29,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:57:29,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:57:29,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:57:29,119 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:57:29,119 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_b799c032-4f07-4541-b599-53b0a81b8561/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 642101326caa2098c0a839a00c9bcfc0200d095adff71c7c8d2e655beccf37a7 [2023-11-26 11:57:29,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:57:29,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:57:29,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:57:29,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:57:29,550 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:57:29,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:32,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:57:33,121 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:57:33,122 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:33,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/c5212f4ad/5601f218ef5a4bbdb0a1414e76c2f92e/FLAG24fa7216c [2023-11-26 11:57:33,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/data/c5212f4ad/5601f218ef5a4bbdb0a1414e76c2f92e [2023-11-26 11:57:33,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:57:33,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:57:33,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:33,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:57:33,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:57:33,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88f1cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33, skipping insertion in model container [2023-11-26 11:57:33,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:57:33,381 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_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-26 11:57:33,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:33,482 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:57:33,497 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_b799c032-4f07-4541-b599-53b0a81b8561/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-3.i[912,925] [2023-11-26 11:57:33,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:57:33,548 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:57:33,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33 WrapperNode [2023-11-26 11:57:33,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:57:33,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:33,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:57:33,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:57:33,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,626 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-11-26 11:57:33,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:57:33,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:57:33,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:57:33,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:57:33,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,646 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,661 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:57:33,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:57:33,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:57:33,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:57:33,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:57:33,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (1/1) ... [2023-11-26 11:57:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:57:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:33,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:57:33,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:57:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:57:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:57:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:57:33,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:57:33,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:57:33,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:57:33,913 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:57:33,916 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:57:52,664 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:57:52,711 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:57:52,712 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:57:52,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:52 BoogieIcfgContainer [2023-11-26 11:57:52,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:57:52,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:57:52,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:57:52,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:57:52,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:57:33" (1/3) ... [2023-11-26 11:57:52,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aded608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:52, skipping insertion in model container [2023-11-26 11:57:52,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:57:33" (2/3) ... [2023-11-26 11:57:52,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aded608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:57:52, skipping insertion in model container [2023-11-26 11:57:52,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:57:52" (3/3) ... [2023-11-26 11:57:52,723 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-3.i [2023-11-26 11:57:52,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:57:52,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:57:52,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:57:52,805 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;@5cb8c87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:57:52,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:57:52,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:57:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 11:57:52,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:52,826 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:52,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:57:52,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 879549835, now seen corresponding path program 1 times [2023-11-26 11:57:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:57:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146031544] [2023-11-26 11:57:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:52,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:57:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:57:52,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:57:52,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:57:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:54,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:57:54,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-26 11:57:54,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:54,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:57:54,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146031544] [2023-11-26 11:57:54,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146031544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:54,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:57:54,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:57:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23887578] [2023-11-26 11:57:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:57:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:57:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:57:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:57:54,367 INFO L87 Difference]: Start difference. First operand has 54 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:58:00,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:58:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:58:00,076 INFO L93 Difference]: Finished difference Result 105 states and 185 transitions. [2023-11-26 11:58:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:58:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 98 [2023-11-26 11:58:00,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:58:00,508 INFO L225 Difference]: With dead ends: 105 [2023-11-26 11:58:00,508 INFO L226 Difference]: Without dead ends: 52 [2023-11-26 11:58:00,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:58:00,518 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:58:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-11-26 11:58:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-26 11:58:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-26 11:58:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:58:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 80 transitions. [2023-11-26 11:58:00,578 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 80 transitions. Word has length 98 [2023-11-26 11:58:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:58:00,579 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 80 transitions. [2023-11-26 11:58:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-26 11:58:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 80 transitions. [2023-11-26 11:58:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 11:58:00,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:58:00,587 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:58:00,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 11:58:00,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:58:00,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:58:00,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:58:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1867586227, now seen corresponding path program 1 times [2023-11-26 11:58:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:58:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366018266] [2023-11-26 11:58:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:58:00,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:58:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:58:00,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:58:00,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b799c032-4f07-4541-b599-53b0a81b8561/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:58:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:58:02,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:58:02,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:58:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-26 11:58:04,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:58:04,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:58:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366018266] [2023-11-26 11:58:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366018266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:58:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:58:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:58:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310033541] [2023-11-26 11:58:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:58:04,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:58:04,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:58:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:58:04,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:58:04,235 INFO L87 Difference]: Start difference. First operand 52 states and 80 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-26 11:58:09,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []