./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1 --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 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:21:02,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:21:02,656 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:21:02,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:21:02,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:21:02,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:21:02,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:21:02,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:21:02,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:21:02,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:21:02,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:21:02,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:21:02,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:21:02,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:21:02,684 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:21:02,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:21:02,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:21:02,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:21:02,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:02,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:02,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:21:02,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:21:02,687 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1 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 -> 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d [2024-12-02 15:21:02,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:21:02,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:21:02,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:21:02,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:21:02,934 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:21:02,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-12-02 15:21:05,619 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/62bbdf2fe/314287ff2bf0498589428e537c1a7507/FLAG7d7faf959 [2024-12-02 15:21:05,848 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:21:05,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-12-02 15:21:05,860 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/62bbdf2fe/314287ff2bf0498589428e537c1a7507/FLAG7d7faf959 [2024-12-02 15:21:05,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/62bbdf2fe/314287ff2bf0498589428e537c1a7507 [2024-12-02 15:21:05,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:21:05,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:21:05,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:21:05,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:21:05,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:21:05,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:05" (1/1) ... [2024-12-02 15:21:05,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8bf298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:05, skipping insertion in model container [2024-12-02 15:21:05,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:05" (1/1) ... [2024-12-02 15:21:05,913 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:21:06,052 WARN L250 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2024-12-02 15:21:06,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:21:06,189 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:21:06,199 WARN L250 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2024-12-02 15:21:06,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:21:06,282 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:21:06,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06 WrapperNode [2024-12-02 15:21:06,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:21:06,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:21:06,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:21:06,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:21:06,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,380 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 528 [2024-12-02 15:21:06,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:21:06,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:21:06,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:21:06,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:21:06,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,444 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]. [2024-12-02 15:21:06,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,465 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:21:06,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:21:06,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:21:06,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:21:06,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:06,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:06,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:21:06,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:21:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:21:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:21:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:21:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:21:06,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:21:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:21:06,647 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:21:06,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:21:07,522 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-12-02 15:21:07,522 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:21:07,536 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:21:07,536 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:21:07,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:07 BoogieIcfgContainer [2024-12-02 15:21:07,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:21:07,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:21:07,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:21:07,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:21:07,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:21:05" (1/3) ... [2024-12-02 15:21:07,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d502625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:21:07, skipping insertion in model container [2024-12-02 15:21:07,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06" (2/3) ... [2024-12-02 15:21:07,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d502625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:21:07, skipping insertion in model container [2024-12-02 15:21:07,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:07" (3/3) ... [2024-12-02 15:21:07,545 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i [2024-12-02 15:21:07,560 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:21:07,563 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-43.i that has 2 procedures, 224 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:21:07,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:21:07,633 INFO L333 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, 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;@4e644d33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:21:07,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:21:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 158 states have (on average 1.4746835443037976) internal successors, (233), 159 states have internal predecessors, (233), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 15:21:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-12-02 15:21:07,657 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:07,658 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:07,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:07,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash -886906033, now seen corresponding path program 1 times [2024-12-02 15:21:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100045120] [2024-12-02 15:21:07,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:07,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2024-12-02 15:21:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:08,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100045120] [2024-12-02 15:21:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100045120] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272990026] [2024-12-02 15:21:08,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:08,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:08,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:21:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:08,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:21:08,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2024-12-02 15:21:08,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:21:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272990026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:08,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:21:08,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:21:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580254426] [2024-12-02 15:21:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:08,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:21:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:08,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:21:08,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:21:08,596 INFO L87 Difference]: Start difference. First operand has 224 states, 158 states have (on average 1.4746835443037976) internal successors, (233), 159 states have internal predecessors, (233), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-12-02 15:21:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:08,646 INFO L93 Difference]: Finished difference Result 441 states and 775 transitions. [2024-12-02 15:21:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:21:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) Word has length 411 [2024-12-02 15:21:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:08,656 INFO L225 Difference]: With dead ends: 441 [2024-12-02 15:21:08,656 INFO L226 Difference]: Without dead ends: 220 [2024-12-02 15:21:08,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:21:08,664 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:08,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:21:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-12-02 15:21:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-12-02 15:21:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 155 states have (on average 1.4516129032258065) internal successors, (225), 155 states have internal predecessors, (225), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 15:21:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 351 transitions. [2024-12-02 15:21:08,732 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 351 transitions. Word has length 411 [2024-12-02 15:21:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:08,732 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 351 transitions. [2024-12-02 15:21:08,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-12-02 15:21:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 351 transitions. [2024-12-02 15:21:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-12-02 15:21:08,742 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:08,743 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:08,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:21:08,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:21:08,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:08,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1497484953, now seen corresponding path program 1 times [2024-12-02 15:21:08,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:08,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634740014] [2024-12-02 15:21:08,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-12-02 15:21:09,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634740014] [2024-12-02 15:21:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634740014] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243041327] [2024-12-02 15:21:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:09,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:09,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:09,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:09,645 INFO L87 Difference]: Start difference. First operand 220 states and 351 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:09,757 INFO L93 Difference]: Finished difference Result 654 states and 1047 transitions. [2024-12-02 15:21:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 411 [2024-12-02 15:21:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:09,763 INFO L225 Difference]: With dead ends: 654 [2024-12-02 15:21:09,763 INFO L226 Difference]: Without dead ends: 437 [2024-12-02 15:21:09,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:09,765 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 222 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:09,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 795 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:21:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-12-02 15:21:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2024-12-02 15:21:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 306 states have (on average 1.4444444444444444) internal successors, (442), 306 states have internal predecessors, (442), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 15:21:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 694 transitions. [2024-12-02 15:21:09,838 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 694 transitions. Word has length 411 [2024-12-02 15:21:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:09,840 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 694 transitions. [2024-12-02 15:21:09,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 694 transitions. [2024-12-02 15:21:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-12-02 15:21:09,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:09,848 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:09,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:21:09,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:09,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 603998615, now seen corresponding path program 1 times [2024-12-02 15:21:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:09,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215841414] [2024-12-02 15:21:09,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-12-02 15:21:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215841414] [2024-12-02 15:21:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215841414] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712929969] [2024-12-02 15:21:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:10,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:10,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:10,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:10,320 INFO L87 Difference]: Start difference. First operand 435 states and 694 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:10,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:10,725 INFO L93 Difference]: Finished difference Result 1515 states and 2404 transitions. [2024-12-02 15:21:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:21:10,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 411 [2024-12-02 15:21:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:10,734 INFO L225 Difference]: With dead ends: 1515 [2024-12-02 15:21:10,734 INFO L226 Difference]: Without dead ends: 1083 [2024-12-02 15:21:10,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:10,736 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 436 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:10,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1147 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:21:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-12-02 15:21:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1041. [2024-12-02 15:21:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 784 states have (on average 1.471938775510204) internal successors, (1154), 784 states have internal predecessors, (1154), 252 states have call successors, (252), 4 states have call predecessors, (252), 4 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2024-12-02 15:21:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1658 transitions. [2024-12-02 15:21:10,862 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1658 transitions. Word has length 411 [2024-12-02 15:21:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:10,863 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1658 transitions. [2024-12-02 15:21:10,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1658 transitions. [2024-12-02 15:21:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-12-02 15:21:10,867 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:10,867 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:10,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:21:10,867 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:10,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash 963359302, now seen corresponding path program 1 times [2024-12-02 15:21:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754916918] [2024-12-02 15:21:10,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-12-02 15:21:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754916918] [2024-12-02 15:21:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754916918] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:11,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811939320] [2024-12-02 15:21:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:11,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:11,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:11,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:11,284 INFO L87 Difference]: Start difference. First operand 1041 states and 1658 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:11,627 INFO L93 Difference]: Finished difference Result 2704 states and 4297 transitions. [2024-12-02 15:21:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:21:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 412 [2024-12-02 15:21:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:11,638 INFO L225 Difference]: With dead ends: 2704 [2024-12-02 15:21:11,638 INFO L226 Difference]: Without dead ends: 1666 [2024-12-02 15:21:11,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:11,642 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 273 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:11,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1008 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:21:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-12-02 15:21:11,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1636. [2024-12-02 15:21:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1315 states have (on average 1.500380228136882) internal successors, (1973), 1315 states have internal predecessors, (1973), 315 states have call successors, (315), 5 states have call predecessors, (315), 5 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2024-12-02 15:21:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2603 transitions. [2024-12-02 15:21:11,787 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2603 transitions. Word has length 412 [2024-12-02 15:21:11,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:11,788 INFO L471 AbstractCegarLoop]: Abstraction has 1636 states and 2603 transitions. [2024-12-02 15:21:11,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2603 transitions. [2024-12-02 15:21:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-12-02 15:21:11,791 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:11,792 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:11,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:21:11,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:11,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -688301868, now seen corresponding path program 1 times [2024-12-02 15:21:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410971140] [2024-12-02 15:21:11,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-12-02 15:21:12,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:12,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410971140] [2024-12-02 15:21:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410971140] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:12,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335725777] [2024-12-02 15:21:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:12,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:12,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:12,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:12,581 INFO L87 Difference]: Start difference. First operand 1636 states and 2603 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:12,998 INFO L93 Difference]: Finished difference Result 5495 states and 8735 transitions. [2024-12-02 15:21:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:21:12,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 413 [2024-12-02 15:21:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:13,019 INFO L225 Difference]: With dead ends: 5495 [2024-12-02 15:21:13,019 INFO L226 Difference]: Without dead ends: 3969 [2024-12-02 15:21:13,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:13,024 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 575 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:13,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1029 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:21:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2024-12-02 15:21:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3157. [2024-12-02 15:21:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 2580 states have (on average 1.506201550387597) internal successors, (3886), 2580 states have internal predecessors, (3886), 567 states have call successors, (567), 9 states have call predecessors, (567), 9 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2024-12-02 15:21:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 5020 transitions. [2024-12-02 15:21:13,300 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 5020 transitions. Word has length 413 [2024-12-02 15:21:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:13,301 INFO L471 AbstractCegarLoop]: Abstraction has 3157 states and 5020 transitions. [2024-12-02 15:21:13,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:21:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 5020 transitions. [2024-12-02 15:21:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-12-02 15:21:13,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:13,305 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:13,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:21:13,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:13,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash -647627118, now seen corresponding path program 1 times [2024-12-02 15:21:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913502527] [2024-12-02 15:21:13,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:13,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-12-02 15:21:14,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:14,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913502527] [2024-12-02 15:21:14,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913502527] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:14,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259620903] [2024-12-02 15:21:14,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:14,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:14,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:14,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:14,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:21:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:14,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 15:21:14,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2024-12-02 15:21:15,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:21:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 198 proven. 171 refuted. 0 times theorem prover too weak. 7443 trivial. 0 not checked. [2024-12-02 15:21:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259620903] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:21:16,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:21:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-12-02 15:21:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992805669] [2024-12-02 15:21:16,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:21:16,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:21:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:16,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:21:16,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:21:16,568 INFO L87 Difference]: Start difference. First operand 3157 states and 5020 transitions. Second operand has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) [2024-12-02 15:21:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:17,550 INFO L93 Difference]: Finished difference Result 6363 states and 9982 transitions. [2024-12-02 15:21:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:21:17,551 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) Word has length 413 [2024-12-02 15:21:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:17,565 INFO L225 Difference]: With dead ends: 6363 [2024-12-02 15:21:17,565 INFO L226 Difference]: Without dead ends: 3337 [2024-12-02 15:21:17,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=289, Invalid=641, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:21:17,572 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 916 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:17,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 632 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:21:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2024-12-02 15:21:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 3265. [2024-12-02 15:21:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 2661 states have (on average 1.4772641863960918) internal successors, (3931), 2661 states have internal predecessors, (3931), 567 states have call successors, (567), 36 states have call predecessors, (567), 36 states have return successors, (567), 567 states have call predecessors, (567), 567 states have call successors, (567) [2024-12-02 15:21:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5065 transitions. [2024-12-02 15:21:17,725 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5065 transitions. Word has length 413 [2024-12-02 15:21:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:17,726 INFO L471 AbstractCegarLoop]: Abstraction has 3265 states and 5065 transitions. [2024-12-02 15:21:17,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.0) internal successors, (210), 15 states have internal predecessors, (210), 6 states have call successors, (151), 3 states have call predecessors, (151), 7 states have return successors, (153), 6 states have call predecessors, (153), 6 states have call successors, (153) [2024-12-02 15:21:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5065 transitions. [2024-12-02 15:21:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-12-02 15:21:17,728 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:17,729 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:17,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:21:17,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:17,929 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:17,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash -564721582, now seen corresponding path program 1 times [2024-12-02 15:21:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949610542] [2024-12-02 15:21:17,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2024-12-02 15:21:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949610542] [2024-12-02 15:21:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949610542] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378462728] [2024-12-02 15:21:19,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:19,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:19,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:21:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:19,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:21:19,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4908 proven. 33 refuted. 0 times theorem prover too weak. 2871 trivial. 0 not checked. [2024-12-02 15:21:20,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:21:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-12-02 15:21:20,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378462728] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:21:20,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:21:20,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-12-02 15:21:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260088964] [2024-12-02 15:21:20,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:21:20,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:21:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:20,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:21:20,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:21:20,713 INFO L87 Difference]: Start difference. First operand 3265 states and 5065 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) [2024-12-02 15:21:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:21,549 INFO L93 Difference]: Finished difference Result 3347 states and 5136 transitions. [2024-12-02 15:21:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:21:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) Word has length 413 [2024-12-02 15:21:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:21,560 INFO L225 Difference]: With dead ends: 3347 [2024-12-02 15:21:21,560 INFO L226 Difference]: Without dead ends: 1783 [2024-12-02 15:21:21,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:21:21,565 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 608 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:21,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1010 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:21:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-12-02 15:21:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1743. [2024-12-02 15:21:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1397 states have (on average 1.439513242662849) internal successors, (2011), 1397 states have internal predecessors, (2011), 315 states have call successors, (315), 30 states have call predecessors, (315), 30 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2024-12-02 15:21:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2641 transitions. [2024-12-02 15:21:21,721 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2641 transitions. Word has length 413 [2024-12-02 15:21:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:21,721 INFO L471 AbstractCegarLoop]: Abstraction has 1743 states and 2641 transitions. [2024-12-02 15:21:21,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 7 states have call successors, (149), 3 states have call predecessors, (149), 6 states have return successors, (149), 7 states have call predecessors, (149), 7 states have call successors, (149) [2024-12-02 15:21:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2641 transitions. [2024-12-02 15:21:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-12-02 15:21:21,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:21,725 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:21:21,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:21:21,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:21,925 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:21,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -811127713, now seen corresponding path program 1 times [2024-12-02 15:21:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:21,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17417779] [2024-12-02 15:21:21,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 264 proven. 102 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2024-12-02 15:21:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17417779] [2024-12-02 15:21:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17417779] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406097378] [2024-12-02 15:21:25,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:25,247 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:25,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:21:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:25,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:21:25,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4499 proven. 360 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-12-02 15:21:28,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:21:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406097378] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:33,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:21:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16] total 19 [2024-12-02 15:21:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829062504] [2024-12-02 15:21:33,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:21:33,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 15:21:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:33,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 15:21:33,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:21:33,701 INFO L87 Difference]: Start difference. First operand 1743 states and 2641 transitions. Second operand has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 18 states have internal predecessors, (174), 6 states have call successors, (92), 5 states have call predecessors, (92), 7 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) [2024-12-02 15:22:06,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:22:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:25,678 INFO L93 Difference]: Finished difference Result 4579 states and 6838 transitions. [2024-12-02 15:22:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:22:25,679 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 18 states have internal predecessors, (174), 6 states have call successors, (92), 5 states have call predecessors, (92), 7 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) Word has length 414 [2024-12-02 15:22:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:25,686 INFO L225 Difference]: With dead ends: 4579 [2024-12-02 15:22:25,687 INFO L226 Difference]: Without dead ends: 3059 [2024-12-02 15:22:25,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:22:25,690 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 834 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:25,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2189 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 48.9s Time] [2024-12-02 15:22:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2024-12-02 15:22:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2915. [2024-12-02 15:22:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2428 states have (on average 1.4464579901153212) internal successors, (3512), 2432 states have internal predecessors, (3512), 423 states have call successors, (423), 63 states have call predecessors, (423), 63 states have return successors, (423), 419 states have call predecessors, (423), 423 states have call successors, (423) [2024-12-02 15:22:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4358 transitions. [2024-12-02 15:22:25,901 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4358 transitions. Word has length 414 [2024-12-02 15:22:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:25,901 INFO L471 AbstractCegarLoop]: Abstraction has 2915 states and 4358 transitions. [2024-12-02 15:22:25,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.157894736842104) internal successors, (174), 18 states have internal predecessors, (174), 6 states have call successors, (92), 5 states have call predecessors, (92), 7 states have return successors, (93), 6 states have call predecessors, (93), 6 states have call successors, (93) [2024-12-02 15:22:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4358 transitions. [2024-12-02 15:22:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-12-02 15:22:25,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:25,906 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:22:25,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:22:26,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 15:22:26,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:26,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1011896266, now seen corresponding path program 1 times [2024-12-02 15:22:26,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:26,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573246137] [2024-12-02 15:22:26,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 15:22:26,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158610110] [2024-12-02 15:22:26,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:26,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:22:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:22:26,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:22:26,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:22:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:27,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 15:22:27,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:23:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4624 proven. 519 refuted. 0 times theorem prover too weak. 2669 trivial. 0 not checked. [2024-12-02 15:23:43,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:25:59,468 WARN L286 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 295 DAG size of output: 310 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 15:28:02,867 WARN L286 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:29:04,622 WARN L286 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:30:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573246137] [2024-12-02 15:30:37,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 15:30:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158610110] [2024-12-02 15:30:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158610110] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:37,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:30:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-12-02 15:30:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995290305] [2024-12-02 15:30:37,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:37,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:30:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:37,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:30:37,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1391, Unknown=12, NotChecked=0, Total=1640 [2024-12-02 15:30:37,367 INFO L87 Difference]: Start difference. First operand 2915 states and 4358 transitions. Second operand has 31 states, 31 states have (on average 4.387096774193548) internal successors, (136), 29 states have internal predecessors, (136), 7 states have call successors, (63), 7 states have call predecessors, (63), 12 states have return successors, (63), 7 states have call predecessors, (63), 7 states have call successors, (63) [2024-12-02 15:30:51,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:30:53,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:30:59,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:03,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:16,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:20,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:23,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:27,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:31,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:35,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:40,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:31:44,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:06,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:06,805 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 15:32:06,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 15:32:06,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 156.4s TimeCoverageRelationStatistics Valid=798, Invalid=4019, Unknown=13, NotChecked=0, Total=4830 [2024-12-02 15:32:06,807 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 178 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 152 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:06,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1117 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2279 Invalid, 9 Unknown, 0 Unchecked, 57.6s Time] [2024-12-02 15:32:06,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:32:07,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:32:07,008 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:349) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:388) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-12-02 15:32:07,012 INFO L158 Benchmark]: Toolchain (without parser) took 661134.05ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 115.9MB in the beginning and 105.4MB in the end (delta: 10.4MB). Peak memory consumption was 222.8MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,012 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 15:32:07,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.92ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 90.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.89ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 75.2MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,013 INFO L158 Benchmark]: Boogie Preprocessor took 110.51ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 103.1MB in the end (delta: -27.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,013 INFO L158 Benchmark]: RCFGBuilder took 1044.96ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 75.0MB in the end (delta: 27.5MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,013 INFO L158 Benchmark]: TraceAbstraction took 659473.03ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 74.1MB in the beginning and 105.4MB in the end (delta: -31.3MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. [2024-12-02 15:32:07,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.92ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 90.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.89ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 75.2MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.51ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 103.1MB in the end (delta: -27.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1044.96ms. Allocated memory is still 142.6MB. Free memory was 102.6MB in the beginning and 75.0MB in the end (delta: 27.5MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. * TraceAbstraction took 659473.03ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 74.1MB in the beginning and 105.4MB in the end (delta: -31.3MB). Peak memory consumption was 184.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1 --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 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:32:08,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:32:08,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 15:32:08,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:32:08,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:32:08,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:32:08,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:32:08,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:32:08,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:32:08,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:32:08,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:32:08,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:32:08,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:32:08,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:32:08,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:32:08,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:32:08,853 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:08,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:08,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:08,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:32:08,854 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1 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 -> 795f4667c1e1102b044359aec08de90b52cc6317a469c691f5b4c1088e37925d [2024-12-02 15:32:09,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:32:09,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:32:09,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:32:09,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:32:09,085 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:32:09,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-12-02 15:32:11,716 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/48c2b01d1/700af7447e674e9c8dffda0ce5c861bf/FLAG90f68c389 [2024-12-02 15:32:11,947 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:32:11,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i [2024-12-02 15:32:11,958 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/48c2b01d1/700af7447e674e9c8dffda0ce5c861bf/FLAG90f68c389 [2024-12-02 15:32:11,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/data/48c2b01d1/700af7447e674e9c8dffda0ce5c861bf [2024-12-02 15:32:11,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:32:11,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:32:11,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:11,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:32:11,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:32:11,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:11" (1/1) ... [2024-12-02 15:32:11,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b412a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:11, skipping insertion in model container [2024-12-02 15:32:11,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:11" (1/1) ... [2024-12-02 15:32:12,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:32:12,105 WARN L250 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2024-12-02 15:32:12,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:12,251 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:32:12,259 WARN L250 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_8ff0bc0b-2c62-4893-9903-7ba2f257b590/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-43.i[916,929] [2024-12-02 15:32:12,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:12,347 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:32:12,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12 WrapperNode [2024-12-02 15:32:12,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:12,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:12,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:32:12,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:32:12,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,401 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 383 [2024-12-02 15:32:12,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:12,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:32:12,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:32:12,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:32:12,407 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,433 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]. [2024-12-02 15:32:12,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,449 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:32:12,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:32:12,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:32:12,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:32:12,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2024-12-02 15:32:12,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:12,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:12,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:32:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:32:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:32:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 15:32:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:32:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:32:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:32:12,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:32:12,616 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:32:12,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:32:30,775 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-12-02 15:32:30,775 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:32:30,787 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:32:30,787 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:32:30,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:30 BoogieIcfgContainer [2024-12-02 15:32:30,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:32:30,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:32:30,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:32:30,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:32:30,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:11" (1/3) ... [2024-12-02 15:32:30,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d84deb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:30, skipping insertion in model container [2024-12-02 15:32:30,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (2/3) ... [2024-12-02 15:32:30,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d84deb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:30, skipping insertion in model container [2024-12-02 15:32:30,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:30" (3/3) ... [2024-12-02 15:32:30,795 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-43.i [2024-12-02 15:32:30,805 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:32:30,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-43.i that has 2 procedures, 172 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:32:30,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:30,863 INFO L333 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, 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;@10e4c8a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:30,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:32:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 15:32:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-12-02 15:32:30,884 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:30,885 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:30,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:30,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash 221344896, now seen corresponding path program 1 times [2024-12-02 15:32:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 15:32:30,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279010386] [2024-12-02 15:32:30,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:30,900 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 [2024-12-02 15:32:30,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 15:32:30,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 15:32:30,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:32:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:31,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:32:31,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2024-12-02 15:32:32,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:32:32,004 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 15:32:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279010386] [2024-12-02 15:32:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279010386] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:32:32,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008472451] [2024-12-02 15:32:32,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:32,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:32:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 15:32:32,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:32:32,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:32:32,033 INFO L87 Difference]: Start difference. First operand has 172 states, 106 states have (on average 1.4339622641509433) internal successors, (152), 107 states have internal predecessors, (152), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-12-02 15:32:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:32,066 INFO L93 Difference]: Finished difference Result 337 states and 613 transitions. [2024-12-02 15:32:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:32:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) Word has length 400 [2024-12-02 15:32:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:32,074 INFO L225 Difference]: With dead ends: 337 [2024-12-02 15:32:32,075 INFO L226 Difference]: Without dead ends: 168 [2024-12-02 15:32:32,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:32:32,081 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:32,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:32:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-12-02 15:32:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-12-02 15:32:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-12-02 15:32:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions. [2024-12-02 15:32:32,138 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 400 [2024-12-02 15:32:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:32,139 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 270 transitions. [2024-12-02 15:32:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 2 states have call successors, (63) [2024-12-02 15:32:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions. [2024-12-02 15:32:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-12-02 15:32:32,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:32,155 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:32,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:32:32,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:32:32,356 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:32,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1643426678, now seen corresponding path program 1 times [2024-12-02 15:32:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 15:32:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367888117] [2024-12-02 15:32:32,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:32,358 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 [2024-12-02 15:32:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 15:32:32,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 15:32:32,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:32:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:33,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:32:33,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:32:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2024-12-02 15:32:38,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:32:38,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 15:32:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367888117] [2024-12-02 15:32:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367888117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:38,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:38,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:32:38,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848266460] [2024-12-02 15:32:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:38,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:32:38,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 15:32:38,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:32:38,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:32:38,005 INFO L87 Difference]: Start difference. First operand 168 states and 270 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:32:42,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:32:46,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:32:50,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:32:55,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:32:59,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:32:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:32:59,319 INFO L93 Difference]: Finished difference Result 554 states and 895 transitions. [2024-12-02 15:32:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:32:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) Word has length 400 [2024-12-02 15:32:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:32:59,399 INFO L225 Difference]: With dead ends: 554 [2024-12-02 15:32:59,399 INFO L226 Difference]: Without dead ends: 389 [2024-12-02 15:32:59,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:32:59,401 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 329 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 127 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:32:59,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 791 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 21.2s Time] [2024-12-02 15:32:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-12-02 15:32:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 331. [2024-12-02 15:32:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 202 states have (on average 1.400990099009901) internal successors, (283), 202 states have internal predecessors, (283), 126 states have call successors, (126), 2 states have call predecessors, (126), 2 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 15:32:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 535 transitions. [2024-12-02 15:32:59,474 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 535 transitions. Word has length 400 [2024-12-02 15:32:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:32:59,481 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 535 transitions. [2024-12-02 15:32:59,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 1 states have call predecessors, (63), 1 states have call successors, (63) [2024-12-02 15:32:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 535 transitions. [2024-12-02 15:32:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-12-02 15:32:59,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:32:59,485 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:59,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 15:32:59,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:32:59,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:59,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 746033400, now seen corresponding path program 1 times [2024-12-02 15:32:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 15:32:59,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623647905] [2024-12-02 15:32:59,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:59,687 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 [2024-12-02 15:32:59,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 15:32:59,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 15:32:59,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 (4)] Waiting until timeout for monitored process [2024-12-02 15:33:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:00,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:33:00,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 1988 proven. 159 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked. [2024-12-02 15:33:05,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 27 proven. 159 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-12-02 15:33:09,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 15:33:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623647905] [2024-12-02 15:33:09,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623647905] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:33:09,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:33:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-12-02 15:33:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082627787] [2024-12-02 15:33:09,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:09,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:33:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 15:33:09,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:33:09,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:33:09,217 INFO L87 Difference]: Start difference. First operand 331 states and 535 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2024-12-02 15:33:16,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:33:20,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:33:24,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:33:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:33:24,491 INFO L93 Difference]: Finished difference Result 675 states and 1081 transitions. [2024-12-02 15:33:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:33:24,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 400 [2024-12-02 15:33:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:33:24,591 INFO L225 Difference]: With dead ends: 675 [2024-12-02 15:33:24,591 INFO L226 Difference]: Without dead ends: 347 [2024-12-02 15:33:24,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 792 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:33:24,599 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 200 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:33:24,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 467 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 326 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2024-12-02 15:33:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-12-02 15:33:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2024-12-02 15:33:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 208 states have (on average 1.3701923076923077) internal successors, (285), 208 states have internal predecessors, (285), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 15:33:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 537 transitions. [2024-12-02 15:33:24,636 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 537 transitions. Word has length 400 [2024-12-02 15:33:24,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:33:24,637 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 537 transitions. [2024-12-02 15:33:24,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2024-12-02 15:33:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 537 transitions. [2024-12-02 15:33:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-12-02 15:33:24,640 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:33:24,640 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:33:24,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 (4)] Ended with exit code 0 [2024-12-02 15:33:24,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 15:33:24,841 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:33:24,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:33:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash 673646842, now seen corresponding path program 1 times [2024-12-02 15:33:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 15:33:24,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214381760] [2024-12-02 15:33:24,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:24,843 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 [2024-12-02 15:33:24,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 15:33:24,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 15:33:24,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 (5)] Waiting until timeout for monitored process [2024-12-02 15:33:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:25,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:33:25,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2024-12-02 15:33:31,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:33,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 15:33:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214381760] [2024-12-02 15:33:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214381760] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1128191838] [2024-12-02 15:33:33,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:33:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 15:33:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 15:33:33,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 15:33:33,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-02 15:33:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:33:36,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:33:36,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:33:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 5013 proven. 168 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2024-12-02 15:33:42,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:33:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1128191838] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:33:43,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:33:43,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-12-02 15:33:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735247261] [2024-12-02 15:33:43,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:33:43,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:33:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 15:33:43,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:33:43,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:33:43,853 INFO L87 Difference]: Start difference. First operand 339 states and 537 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2024-12-02 15:33:54,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:33:58,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:34:02,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:34:06,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:34:10,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 15:34:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:34:10,514 INFO L93 Difference]: Finished difference Result 703 states and 1095 transitions. [2024-12-02 15:34:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:34:10,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 400 [2024-12-02 15:34:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:34:10,596 INFO L225 Difference]: With dead ends: 703 [2024-12-02 15:34:10,596 INFO L226 Difference]: Without dead ends: 367 [2024-12-02 15:34:10,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:34:10,599 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 221 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 63 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:34:10,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 653 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 688 Invalid, 5 Unknown, 0 Unchecked, 26.3s Time] [2024-12-02 15:34:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-12-02 15:34:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 355. [2024-12-02 15:34:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 220 states have (on average 1.3409090909090908) internal successors, (295), 220 states have internal predecessors, (295), 126 states have call successors, (126), 8 states have call predecessors, (126), 8 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2024-12-02 15:34:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 547 transitions. [2024-12-02 15:34:10,652 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 547 transitions. Word has length 400 [2024-12-02 15:34:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:34:10,653 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 547 transitions. [2024-12-02 15:34:10,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2024-12-02 15:34:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 547 transitions. [2024-12-02 15:34:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-12-02 15:34:10,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:34:10,656 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:34:10,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 (5)] Ended with exit code 0 [2024-12-02 15:34:10,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-12-02 15:34:11,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 15:34:11,057 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:34:11,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:34:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash 735686456, now seen corresponding path program 1 times [2024-12-02 15:34:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 15:34:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69427265] [2024-12-02 15:34:11,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:11,059 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 [2024-12-02 15:34:11,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 15:34:11,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 15:34:11,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/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 (7)] Waiting until timeout for monitored process [2024-12-02 15:34:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:12,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 15:34:12,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4944 proven. 162 refuted. 0 times theorem prover too weak. 2706 trivial. 0 not checked. [2024-12-02 15:34:20,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:24,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 15:34:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69427265] [2024-12-02 15:34:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69427265] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275936889] [2024-12-02 15:34:24,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:34:24,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 15:34:24,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 15:34:24,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 15:34:24,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ff0bc0b-2c62-4893-9903-7ba2f257b590/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 15:34:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:34:28,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 15:34:28,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:34:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 4559 proven. 102 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2024-12-02 15:34:38,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:34:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1275936889] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:34:43,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:34:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 16 [2024-12-02 15:34:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204468740] [2024-12-02 15:34:43,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:34:43,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:34:43,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 15:34:43,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:34:43,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=346, Unknown=1, NotChecked=0, Total=420 [2024-12-02 15:34:43,295 INFO L87 Difference]: Start difference. First operand 355 states and 547 transitions. Second operand has 16 states, 16 states have (on average 9.6875) internal successors, (155), 16 states have internal predecessors, (155), 5 states have call successors, (85), 5 states have call predecessors, (85), 8 states have return successors, (86), 5 states have call predecessors, (86), 5 states have call successors, (86) [2024-12-02 15:35:09,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:35:13,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:35:17,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:35:21,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]