./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB --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 062a802759b4aa2a0cbcb5cdde30f3437c09c950e76bee485cf882952e2d339f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:14:57,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:14:57,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:14:57,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:14:57,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:14:57,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:14:57,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:14:57,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:14:57,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:14:57,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:14:57,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:14:57,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:14:57,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:14:57,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:14:57,741 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:14:57,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:14:57,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:14:57,743 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:14:57,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:14:57,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:14:57,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:14:57,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:14:57,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:14:57,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:14:57,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:14:57,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:14:57,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:14:57,747 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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 062a802759b4aa2a0cbcb5cdde30f3437c09c950e76bee485cf882952e2d339f [2024-11-28 03:14:58,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:14:58,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:14:58,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:14:58,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:14:58,091 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:14:58,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:01,115 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/8931bdf8d/951d091dee0e416f90da145533616d51/FLAG64daf8539 [2024-11-28 03:15:01,423 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:01,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:01,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/8931bdf8d/951d091dee0e416f90da145533616d51/FLAG64daf8539 [2024-11-28 03:15:01,467 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/8931bdf8d/951d091dee0e416f90da145533616d51 [2024-11-28 03:15:01,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:01,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:01,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:01,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:01,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:01,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6727ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01, skipping insertion in model container [2024-11-28 03:15:01,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,499 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:01,645 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_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i[919,932] [2024-11-28 03:15:01,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:01,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:01,775 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_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i[919,932] [2024-11-28 03:15:01,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:01,850 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:01,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01 WrapperNode [2024-11-28 03:15:01,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:01,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:01,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:01,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:01,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,924 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191 [2024-11-28 03:15:01,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:01,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:01,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:01,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:01,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,979 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]. [2024-11-28 03:15:01,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,998 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:01,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:02,007 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:02,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:02,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:02,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:02,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:02,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:02,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:02,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (1/1) ... [2024-11-28 03:15:02,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:02,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:02,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:02,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:15:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:15:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:15:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:02,200 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:02,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:15:02,678 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 03:15:02,678 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:15:02,693 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:15:02,693 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:15:02,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:02 BoogieIcfgContainer [2024-11-28 03:15:02,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:15:02,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:15:02,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:15:02,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:15:02,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:01" (1/3) ... [2024-11-28 03:15:02,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb7e0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:02, skipping insertion in model container [2024-11-28 03:15:02,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:01" (2/3) ... [2024-11-28 03:15:02,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb7e0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:02, skipping insertion in model container [2024-11-28 03:15:02,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:02" (3/3) ... [2024-11-28 03:15:02,707 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:02,725 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:15:02,728 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i that has 2 procedures, 83 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:15:02,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:02,822 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;@60b2640e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:02,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:15:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:15:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:15:02,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:02,837 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:02,838 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:02,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:02,843 INFO L85 PathProgramCache]: Analyzing trace with hash -350319648, now seen corresponding path program 1 times [2024-11-28 03:15:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983182920] [2024-11-28 03:15:02,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983182920] [2024-11-28 03:15:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983182920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:04,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:15:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750244861] [2024-11-28 03:15:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:04,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:04,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:04,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:04,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:04,153 INFO L87 Difference]: Start difference. First operand has 83 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 61 states have internal predecessors, (89), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:04,832 INFO L93 Difference]: Finished difference Result 237 states and 420 transitions. [2024-11-28 03:15:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:15:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2024-11-28 03:15:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:04,845 INFO L225 Difference]: With dead ends: 237 [2024-11-28 03:15:04,845 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 03:15:04,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:15:04,871 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 119 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:04,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 436 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:15:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 03:15:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 133. [2024-11-28 03:15:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 03:15:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 205 transitions. [2024-11-28 03:15:04,971 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 205 transitions. Word has length 140 [2024-11-28 03:15:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:04,972 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 205 transitions. [2024-11-28 03:15:04,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 205 transitions. [2024-11-28 03:15:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:15:04,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:04,978 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:04,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:15:04,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:04,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash 430557083, now seen corresponding path program 1 times [2024-11-28 03:15:04,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:04,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915559169] [2024-11-28 03:15:04,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:05,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915559169] [2024-11-28 03:15:05,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915559169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:05,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610021111] [2024-11-28 03:15:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:05,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:05,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:05,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:05,394 INFO L87 Difference]: Start difference. First operand 133 states and 205 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:05,577 INFO L93 Difference]: Finished difference Result 288 states and 443 transitions. [2024-11-28 03:15:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-28 03:15:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:05,582 INFO L225 Difference]: With dead ends: 288 [2024-11-28 03:15:05,582 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 03:15:05,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:05,584 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 77 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:05,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 314 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:15:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 03:15:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2024-11-28 03:15:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 143 states have (on average 1.3916083916083917) internal successors, (199), 143 states have internal predecessors, (199), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:15:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 319 transitions. [2024-11-28 03:15:05,635 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 319 transitions. Word has length 141 [2024-11-28 03:15:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:05,636 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 319 transitions. [2024-11-28 03:15:05,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 319 transitions. [2024-11-28 03:15:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:15:05,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:05,642 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:05,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:15:05,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:05,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1690713357, now seen corresponding path program 1 times [2024-11-28 03:15:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:05,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882103949] [2024-11-28 03:15:05,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:05,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:06,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882103949] [2024-11-28 03:15:06,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882103949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:06,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:06,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:15:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548631929] [2024-11-28 03:15:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:06,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:06,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:06,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:06,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:06,112 INFO L87 Difference]: Start difference. First operand 207 states and 319 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:06,542 INFO L93 Difference]: Finished difference Result 399 states and 610 transitions. [2024-11-28 03:15:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:15:06,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:15:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:06,548 INFO L225 Difference]: With dead ends: 399 [2024-11-28 03:15:06,551 INFO L226 Difference]: Without dead ends: 249 [2024-11-28 03:15:06,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:06,553 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 169 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:06,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 212 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-28 03:15:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 213. [2024-11-28 03:15:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 149 states have (on average 1.389261744966443) internal successors, (207), 149 states have internal predecessors, (207), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:15:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 327 transitions. [2024-11-28 03:15:06,634 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 327 transitions. Word has length 143 [2024-11-28 03:15:06,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:06,635 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 327 transitions. [2024-11-28 03:15:06,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:06,635 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 327 transitions. [2024-11-28 03:15:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:15:06,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:06,637 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:06,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:15:06,638 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:06,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1103907343, now seen corresponding path program 1 times [2024-11-28 03:15:06,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:06,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508364464] [2024-11-28 03:15:06,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 03:15:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508364464] [2024-11-28 03:15:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508364464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337655910] [2024-11-28 03:15:07,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:07,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:07,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:07,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:15:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:07,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:15:07,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 417 proven. 78 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:15:08,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-28 03:15:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337655910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:15:08,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:15:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-28 03:15:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382497370] [2024-11-28 03:15:08,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:15:08,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:15:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:08,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:15:08,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:15:08,939 INFO L87 Difference]: Start difference. First operand 213 states and 327 transitions. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 7 states have call successors, (58), 3 states have call predecessors, (58), 7 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) [2024-11-28 03:15:10,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:10,173 INFO L93 Difference]: Finished difference Result 449 states and 658 transitions. [2024-11-28 03:15:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:15:10,174 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 7 states have call successors, (58), 3 states have call predecessors, (58), 7 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) Word has length 143 [2024-11-28 03:15:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:10,178 INFO L225 Difference]: With dead ends: 449 [2024-11-28 03:15:10,180 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 03:15:10,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:15:10,183 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 892 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:10,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 305 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:15:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 03:15:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2024-11-28 03:15:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 164 states have (on average 1.298780487804878) internal successors, (213), 164 states have internal predecessors, (213), 60 states have call successors, (60), 9 states have call predecessors, (60), 9 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:15:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 333 transitions. [2024-11-28 03:15:10,246 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 333 transitions. Word has length 143 [2024-11-28 03:15:10,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:10,247 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 333 transitions. [2024-11-28 03:15:10,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 7 states have call successors, (58), 3 states have call predecessors, (58), 7 states have return successors, (59), 7 states have call predecessors, (59), 7 states have call successors, (59) [2024-11-28 03:15:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 333 transitions. [2024-11-28 03:15:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:15:10,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:10,249 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:10,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:15:10,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:10,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:10,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1834438604, now seen corresponding path program 1 times [2024-11-28 03:15:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3046166] [2024-11-28 03:15:10,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:15:10,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536188939] [2024-11-28 03:15:10,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:10,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:10,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:10,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:15:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:10,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:15:10,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 438 proven. 57 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:15:11,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:18,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:15:18,202 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:15:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3046166] [2024-11-28 03:15:18,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 03:15:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536188939] [2024-11-28 03:15:18,203 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 03:15:18,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:18,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:18,404 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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) 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: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-11-28 03:15:18,410 INFO L158 Benchmark]: Toolchain (without parser) took 16939.54ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 119.0MB in the beginning and 262.7MB in the end (delta: -143.7MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. [2024-11-28 03:15:18,411 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:15:18,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.88ms. Allocated memory is still 142.6MB. Free memory was 119.0MB in the beginning and 103.5MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:15:18,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.45ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 98.9MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:15:18,412 INFO L158 Benchmark]: Boogie Preprocessor took 98.18ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 92.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:15:18,412 INFO L158 Benchmark]: RCFGBuilder took 669.73ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 65.5MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:15:18,412 INFO L158 Benchmark]: TraceAbstraction took 15711.10ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 64.7MB in the beginning and 262.7MB in the end (delta: -198.0MB). Peak memory consumption was 92.2MB. Max. memory is 16.1GB. [2024-11-28 03:15:18,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.88ms. Allocated memory is still 142.6MB. Free memory was 119.0MB in the beginning and 103.5MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.45ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 98.9MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 98.18ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 92.7MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 669.73ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 65.5MB in the end (delta: 27.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15711.10ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 64.7MB in the beginning and 262.7MB in the end (delta: -198.0MB). Peak memory consumption was 92.2MB. 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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) 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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB --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 062a802759b4aa2a0cbcb5cdde30f3437c09c950e76bee485cf882952e2d339f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:15:20,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:15:20,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 03:15:20,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:15:20,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:15:21,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:15:21,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:15:21,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:15:21,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:15:21,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:15:21,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:15:21,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:15:21,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:15:21,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:15:21,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:15:21,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:15:21,027 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:21,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:21,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:21,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:15:21,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:15:21,028 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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 062a802759b4aa2a0cbcb5cdde30f3437c09c950e76bee485cf882952e2d339f [2024-11-28 03:15:21,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:15:21,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:15:21,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:15:21,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:15:21,343 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:15:21,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:24,291 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/39aa68e06/5a50ffb6d59649329afb35f8c6532d85/FLAG5afe204fd [2024-11-28 03:15:24,615 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:24,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:24,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/39aa68e06/5a50ffb6d59649329afb35f8c6532d85/FLAG5afe204fd [2024-11-28 03:15:24,666 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/data/39aa68e06/5a50ffb6d59649329afb35f8c6532d85 [2024-11-28 03:15:24,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:24,671 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:24,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:24,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:24,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:24,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:24" (1/1) ... [2024-11-28 03:15:24,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7984ad8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:24, skipping insertion in model container [2024-11-28 03:15:24,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:24" (1/1) ... [2024-11-28 03:15:24,709 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:24,868 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_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i[919,932] [2024-11-28 03:15:24,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:24,998 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:25,012 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_7f07becd-4057-474a-809a-86b48718c173/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i[919,932] [2024-11-28 03:15:25,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:25,104 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:25,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25 WrapperNode [2024-11-28 03:15:25,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:25,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:25,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:25,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:25,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,178 INFO L138 Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2024-11-28 03:15:25,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:25,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:25,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:25,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:25,195 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,224 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]. [2024-11-28 03:15:25,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:25,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:25,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:25,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:25,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (1/1) ... [2024-11-28 03:15:25,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:25,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:25,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:15:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:15:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:15:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:25,414 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:25,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:15:30,752 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 03:15:30,752 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:15:30,763 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:15:30,763 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:15:30,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:30 BoogieIcfgContainer [2024-11-28 03:15:30,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:15:30,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:15:30,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:15:30,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:15:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:24" (1/3) ... [2024-11-28 03:15:30,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62abf420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:30, skipping insertion in model container [2024-11-28 03:15:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:25" (2/3) ... [2024-11-28 03:15:30,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62abf420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:30, skipping insertion in model container [2024-11-28 03:15:30,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:30" (3/3) ... [2024-11-28 03:15:30,773 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i [2024-11-28 03:15:30,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:15:30,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-13.i that has 2 procedures, 75 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:15:30,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:30,910 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;@5457bd0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:30,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:15:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:15:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 03:15:30,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:30,930 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:30,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:30,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:30,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1117788754, now seen corresponding path program 1 times [2024-11-28 03:15:30,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:30,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231801989] [2024-11-28 03:15:30,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:30,952 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 [2024-11-28 03:15:30,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:15:30,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:15:30,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:31,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:15:31,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-28 03:15:31,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:31,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231801989] [2024-11-28 03:15:31,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231801989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:31,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168778697] [2024-11-28 03:15:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:31,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:15:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:31,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:15:31,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:31,465 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:15:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:31,492 INFO L93 Difference]: Finished difference Result 143 states and 248 transitions. [2024-11-28 03:15:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:15:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 137 [2024-11-28 03:15:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:31,501 INFO L225 Difference]: With dead ends: 143 [2024-11-28 03:15:31,501 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 03:15:31,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:15:31,507 INFO L435 NwaCegarLoop]: 107 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, 107 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 [2024-11-28 03:15:31,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:15:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 03:15:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 03:15:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:15:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 107 transitions. [2024-11-28 03:15:31,550 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 107 transitions. Word has length 137 [2024-11-28 03:15:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:31,550 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 107 transitions. [2024-11-28 03:15:31,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:15:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 107 transitions. [2024-11-28 03:15:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 03:15:31,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:31,554 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:31,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:31,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:31,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:31,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash 620006600, now seen corresponding path program 1 times [2024-11-28 03:15:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:31,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227082942] [2024-11-28 03:15:31,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:31,760 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 [2024-11-28 03:15:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:15:31,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:15:31,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:32,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:15:32,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 19 proven. 57 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-28 03:15:34,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:35,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227082942] [2024-11-28 03:15:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227082942] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:35,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:15:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 03:15:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646405982] [2024-11-28 03:15:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:35,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:35,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:35,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:35,869 INFO L87 Difference]: Start difference. First operand 71 states and 107 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:15:38,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:40,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:43,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:46,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:46,222 INFO L93 Difference]: Finished difference Result 229 states and 346 transitions. [2024-11-28 03:15:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:15:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2024-11-28 03:15:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:46,227 INFO L225 Difference]: With dead ends: 229 [2024-11-28 03:15:46,227 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 03:15:46,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:46,229 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 129 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:46,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 293 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-28 03:15:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 03:15:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 143. [2024-11-28 03:15:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.39) internal successors, (139), 100 states have internal predecessors, (139), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 03:15:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 219 transitions. [2024-11-28 03:15:46,284 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 219 transitions. Word has length 138 [2024-11-28 03:15:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:46,284 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 219 transitions. [2024-11-28 03:15:46,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:15:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 219 transitions. [2024-11-28 03:15:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 03:15:46,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:46,291 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:46,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:46,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:46,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:46,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 796501716, now seen corresponding path program 1 times [2024-11-28 03:15:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893737065] [2024-11-28 03:15:46,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:46,493 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 [2024-11-28 03:15:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:15:46,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:15:46,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:46,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:15:46,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:48,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:48,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893737065] [2024-11-28 03:15:48,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893737065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:48,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:48,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566182013] [2024-11-28 03:15:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:48,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:48,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:48,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:48,863 INFO L87 Difference]: Start difference. First operand 143 states and 219 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:52,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:54,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:15:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:54,613 INFO L93 Difference]: Finished difference Result 359 states and 548 transitions. [2024-11-28 03:15:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:54,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2024-11-28 03:15:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:54,616 INFO L225 Difference]: With dead ends: 359 [2024-11-28 03:15:54,616 INFO L226 Difference]: Without dead ends: 219 [2024-11-28 03:15:54,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:15:54,618 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 83 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:54,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 346 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 03:15:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-28 03:15:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 193. [2024-11-28 03:15:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 129 states have internal predecessors, (175), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:15:54,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2024-11-28 03:15:54,658 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 295 transitions. Word has length 139 [2024-11-28 03:15:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:54,659 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 295 transitions. [2024-11-28 03:15:54,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:15:54,659 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 295 transitions. [2024-11-28 03:15:54,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:15:54,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:54,662 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:54,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:54,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:54,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:54,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash -20391830, now seen corresponding path program 1 times [2024-11-28 03:15:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135707616] [2024-11-28 03:15:54,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:54,864 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 [2024-11-28 03:15:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:15:54,867 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:15:54,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:15:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:55,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:15:55,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 410 proven. 48 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-28 03:15:57,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:58,095 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135707616] [2024-11-28 03:15:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135707616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1025032603] [2024-11-28 03:15:58,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:58,096 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:15:58,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:15:58,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:15:58,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-28 03:15:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:58,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:15:58,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:15:58,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:58,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1025032603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:58,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:15:58,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-11-28 03:15:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253152587] [2024-11-28 03:15:58,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:58,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:58,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:58,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:15:58,814 INFO L87 Difference]: Start difference. First operand 193 states and 295 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:16:02,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:02,465 INFO L93 Difference]: Finished difference Result 433 states and 660 transitions. [2024-11-28 03:16:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2024-11-28 03:16:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:02,468 INFO L225 Difference]: With dead ends: 433 [2024-11-28 03:16:02,468 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 03:16:02,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:16:02,470 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 53 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:02,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 243 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:16:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 03:16:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2024-11-28 03:16:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 211 states have (on average 1.3838862559241707) internal successors, (292), 213 states have internal predecessors, (292), 72 states have call successors, (72), 5 states have call predecessors, (72), 5 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 03:16:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 436 transitions. [2024-11-28 03:16:02,512 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 436 transitions. Word has length 140 [2024-11-28 03:16:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:02,513 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 436 transitions. [2024-11-28 03:16:02,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:16:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 436 transitions. [2024-11-28 03:16:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:16:02,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:02,520 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:02,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:16:02,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-28 03:16:02,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:16:02,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:02,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -607197844, now seen corresponding path program 1 times [2024-11-28 03:16:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:16:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095403329] [2024-11-28 03:16:02,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:02,922 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 [2024-11-28 03:16:02,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:16:02,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:16:02,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:16:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:03,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:16:03,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 410 proven. 48 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-11-28 03:16:05,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:05,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:16:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095403329] [2024-11-28 03:16:05,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095403329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1298527737] [2024-11-28 03:16:05,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:05,908 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:16:05,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:16:05,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:16:05,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-28 03:16:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:07,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:16:07,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 399 proven. 27 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-28 03:16:08,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1298527737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:08,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:16:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 9 [2024-11-28 03:16:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030845887] [2024-11-28 03:16:08,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:08,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:16:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:16:08,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:16:08,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:16:08,682 INFO L87 Difference]: Start difference. First operand 289 states and 436 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-28 03:16:13,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:15,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:16,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:18,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:18,975 INFO L93 Difference]: Finished difference Result 707 states and 1047 transitions. [2024-11-28 03:16:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:16:18,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 140 [2024-11-28 03:16:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:18,981 INFO L225 Difference]: With dead ends: 707 [2024-11-28 03:16:18,981 INFO L226 Difference]: Without dead ends: 467 [2024-11-28 03:16:18,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 414 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:16:18,983 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 144 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:18,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 717 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-28 03:16:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-28 03:16:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 451. [2024-11-28 03:16:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 320 states have (on average 1.33125) internal successors, (426), 326 states have internal predecessors, (426), 118 states have call successors, (118), 12 states have call predecessors, (118), 12 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-28 03:16:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 662 transitions. [2024-11-28 03:16:19,053 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 662 transitions. Word has length 140 [2024-11-28 03:16:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:19,054 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 662 transitions. [2024-11-28 03:16:19,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 3 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-28 03:16:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 662 transitions. [2024-11-28 03:16:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:16:19,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:19,057 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:19,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:19,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-28 03:16:19,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:16:19,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:19,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash -499224978, now seen corresponding path program 1 times [2024-11-28 03:16:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:16:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120362308] [2024-11-28 03:16:19,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:19,458 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 [2024-11-28 03:16:19,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:16:19,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:16:19,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Waiting until timeout for monitored process [2024-11-28 03:16:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:19,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:16:19,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 40 proven. 108 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-28 03:16:21,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:16:22,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:16:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120362308] [2024-11-28 03:16:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120362308] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:22,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:16:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2024-11-28 03:16:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172865635] [2024-11-28 03:16:22,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:22,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:16:22,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:22,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:16:22,281 INFO L87 Difference]: Start difference. First operand 451 states and 662 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:16:26,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:27,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 03:16:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:27,962 INFO L93 Difference]: Finished difference Result 977 states and 1431 transitions. [2024-11-28 03:16:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-28 03:16:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:27,967 INFO L225 Difference]: With dead ends: 977 [2024-11-28 03:16:27,967 INFO L226 Difference]: Without dead ends: 623 [2024-11-28 03:16:27,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:16:27,969 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 31 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:27,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 246 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-28 03:16:27,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-28 03:16:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 469. [2024-11-28 03:16:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 338 states have (on average 1.3224852071005917) internal successors, (447), 344 states have internal predecessors, (447), 118 states have call successors, (118), 12 states have call predecessors, (118), 12 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-28 03:16:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 683 transitions. [2024-11-28 03:16:28,021 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 683 transitions. Word has length 141 [2024-11-28 03:16:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:28,023 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 683 transitions. [2024-11-28 03:16:28,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:16:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 683 transitions. [2024-11-28 03:16:28,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:16:28,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:28,026 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:28,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Ended with exit code 0 [2024-11-28 03:16:28,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 03:16:28,227 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:28,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash 201839600, now seen corresponding path program 1 times [2024-11-28 03:16:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:16:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066275370] [2024-11-28 03:16:28,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:28,228 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 [2024-11-28 03:16:28,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 03:16:28,232 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 03:16:28,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f07becd-4057-474a-809a-86b48718c173/bin/uautomizer-verify-aQ6SnzHsRB/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 (10)] Waiting until timeout for monitored process [2024-11-28 03:16:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:28,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 03:16:28,599 INFO L279 TraceCheckSpWp]: Computing forward predicates...