./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.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_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac500415e5d2e9d3fb881d4fbfbb2b334efa6f0be9649c96e889d794785b3706 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:03:19,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:03:19,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:03:19,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:03:19,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:03:19,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:03:19,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:03:19,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:03:19,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:03:19,206 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:03:19,206 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:03:19,206 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:03:19,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:03:19,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:03:19,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:03:19,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:03:19,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:03:19,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:03:19,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:03:19,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:03:19,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:03:19,210 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_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac500415e5d2e9d3fb881d4fbfbb2b334efa6f0be9649c96e889d794785b3706 [2024-12-02 14:03:19,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:03:19,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:03:19,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:03:19,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:03:19,451 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:03:19,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.i [2024-12-02 14:03:22,148 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/data/409a7368d/4fe337a255a74d40a33c6110f5bb0d10/FLAG5fceea029 [2024-12-02 14:03:22,348 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:03:22,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.i [2024-12-02 14:03:22,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/data/409a7368d/4fe337a255a74d40a33c6110f5bb0d10/FLAG5fceea029 [2024-12-02 14:03:22,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/data/409a7368d/4fe337a255a74d40a33c6110f5bb0d10 [2024-12-02 14:03:22,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:03:22,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:03:22,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:03:22,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:03:22,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:03:22,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e89fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22, skipping insertion in model container [2024-12-02 14:03:22,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:03:22,549 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_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.i[916,929] [2024-12-02 14:03:22,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:03:22,606 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:03:22,618 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_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-82.i[916,929] [2024-12-02 14:03:22,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:03:22,660 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:03:22,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22 WrapperNode [2024-12-02 14:03:22,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:03:22,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:03:22,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:03:22,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:03:22,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,710 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2024-12-02 14:03:22,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:03:22,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:03:22,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:03:22,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:03:22,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,739 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 14:03:22,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,747 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:03:22,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:03:22,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:03:22,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:03:22,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (1/1) ... [2024-12-02 14:03:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:03:22,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:03:22,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:03:22,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:03:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:03:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:03:22,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:03:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:03:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:03:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:03:22,877 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:03:22,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:03:23,153 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 14:03:23,153 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:03:23,161 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:03:23,162 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:03:23,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:03:23 BoogieIcfgContainer [2024-12-02 14:03:23,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:03:23,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:03:23,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:03:23,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:03:23,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:03:22" (1/3) ... [2024-12-02 14:03:23,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671a8cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:03:23, skipping insertion in model container [2024-12-02 14:03:23,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:03:22" (2/3) ... [2024-12-02 14:03:23,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671a8cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:03:23, skipping insertion in model container [2024-12-02 14:03:23,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:03:23" (3/3) ... [2024-12-02 14:03:23,171 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-82.i [2024-12-02 14:03:23,188 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:03:23,189 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-82.i that has 2 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:03:23,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:03:23,252 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;@13909636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:03:23,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:03:23,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 14:03:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 14:03:23,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:23,267 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:23,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:23,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash -685609202, now seen corresponding path program 1 times [2024-12-02 14:03:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:03:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987642341] [2024-12-02 14:03:23,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:03:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 14:03:23,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:03:23,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987642341] [2024-12-02 14:03:23,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987642341] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:03:23,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848711962] [2024-12-02 14:03:23,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:23,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:03:23,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:03:23,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:03:23,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:03:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:23,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:03:23,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:03:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 14:03:23,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:03:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848711962] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:03:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:03:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:03:23,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737088300] [2024-12-02 14:03:23,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:03:23,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:03:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:03:23,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:03:23,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:03:23,684 INFO L87 Difference]: Start difference. First operand has 60 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 42 states have internal predecessors, (57), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:03:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:03:23,706 INFO L93 Difference]: Finished difference Result 113 states and 188 transitions. [2024-12-02 14:03:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:03:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 105 [2024-12-02 14:03:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:03:23,712 INFO L225 Difference]: With dead ends: 113 [2024-12-02 14:03:23,712 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 14:03:23,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:03:23,717 INFO L435 NwaCegarLoop]: 82 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, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:03:23,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:03:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 14:03:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 14:03:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 14:03:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2024-12-02 14:03:23,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 105 [2024-12-02 14:03:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:03:23,751 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2024-12-02 14:03:23,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 14:03:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2024-12-02 14:03:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 14:03:23,755 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:23,755 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:23,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:03:23,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf148dae-7c2d-4de9-aaa6-5f60031f3b43/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:03:23,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:23,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2099220238, now seen corresponding path program 1 times [2024-12-02 14:03:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:03:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862341803] [2024-12-02 14:03:23,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:03:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:03:24,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:03:24,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862341803] [2024-12-02 14:03:24,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862341803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:03:24,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:03:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:03:24,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220738039] [2024-12-02 14:03:24,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:03:24,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:03:24,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:03:24,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:03:24,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:03:24,276 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:03:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:03:24,349 INFO L93 Difference]: Finished difference Result 127 states and 185 transitions. [2024-12-02 14:03:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:03:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 105 [2024-12-02 14:03:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:03:24,352 INFO L225 Difference]: With dead ends: 127 [2024-12-02 14:03:24,352 INFO L226 Difference]: Without dead ends: 74 [2024-12-02 14:03:24,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:03:24,354 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:03:24,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 219 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:03:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-12-02 14:03:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2024-12-02 14:03:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 14:03:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2024-12-02 14:03:24,365 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 105 [2024-12-02 14:03:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:03:24,366 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2024-12-02 14:03:24,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:03:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2024-12-02 14:03:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 14:03:24,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:24,368 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:24,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:03:24,369 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:24,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2118133047, now seen corresponding path program 1 times [2024-12-02 14:03:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:03:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201927433] [2024-12-02 14:03:24,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:03:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:03:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:03:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201927433] [2024-12-02 14:03:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201927433] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:03:24,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:03:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:03:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468522134] [2024-12-02 14:03:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:03:24,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:03:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:03:24,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:03:24,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:03:24,640 INFO L87 Difference]: Start difference. First operand 60 states and 87 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:03:24,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:03:24,928 INFO L93 Difference]: Finished difference Result 187 states and 270 transitions. [2024-12-02 14:03:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:03:24,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2024-12-02 14:03:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:03:24,931 INFO L225 Difference]: With dead ends: 187 [2024-12-02 14:03:24,931 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 14:03:24,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:03:24,932 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 73 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:03:24,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 292 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:03:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 14:03:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 119. [2024-12-02 14:03:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 14:03:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-12-02 14:03:24,955 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 107 [2024-12-02 14:03:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:03:24,956 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-12-02 14:03:24,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:03:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-12-02 14:03:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 14:03:24,958 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:03:24,959 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:03:24,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:03:24,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:03:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:03:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1859967609, now seen corresponding path program 1 times [2024-12-02 14:03:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:03:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456775934] [2024-12-02 14:03:24,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:03:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:03:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:07:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:07:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:07:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456775934] [2024-12-02 14:07:24,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456775934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:07:24,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:07:24,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:07:24,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530862174] [2024-12-02 14:07:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:07:24,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:07:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:07:24,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:07:24,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:07:24,007 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:07:25,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:07:25,144 INFO L93 Difference]: Finished difference Result 201 states and 281 transitions. [2024-12-02 14:07:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:07:25,145 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2024-12-02 14:07:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:07:25,147 INFO L225 Difference]: With dead ends: 201 [2024-12-02 14:07:25,147 INFO L226 Difference]: Without dead ends: 199 [2024-12-02 14:07:25,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:07:25,148 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 101 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:07:25,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 379 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:07:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-12-02 14:07:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2024-12-02 14:07:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 117 states have internal predecessors, (147), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 14:07:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2024-12-02 14:07:25,169 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 107 [2024-12-02 14:07:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:07:25,170 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2024-12-02 14:07:25,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:07:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2024-12-02 14:07:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 14:07:25,171 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:07:25,172 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:07:25,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:07:25,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:07:25,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:07:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1353816150, now seen corresponding path program 1 times [2024-12-02 14:07:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:07:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814423388] [2024-12-02 14:07:25,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:07:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:07:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:10:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:10:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:10:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814423388] [2024-12-02 14:10:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814423388] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:10:38,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:10:38,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:10:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887466574] [2024-12-02 14:10:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:10:38,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:10:38,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:10:38,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:10:38,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:10:38,328 INFO L87 Difference]: Start difference. First operand 169 states and 243 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:10:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:10:39,292 INFO L93 Difference]: Finished difference Result 212 states and 293 transitions. [2024-12-02 14:10:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:10:39,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-02 14:10:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:10:39,294 INFO L225 Difference]: With dead ends: 212 [2024-12-02 14:10:39,294 INFO L226 Difference]: Without dead ends: 210 [2024-12-02 14:10:39,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:10:39,295 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 100 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:10:39,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 423 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:10:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-12-02 14:10:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 171. [2024-12-02 14:10:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 119 states have (on average 1.26890756302521) internal successors, (151), 119 states have internal predecessors, (151), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 14:10:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 247 transitions. [2024-12-02 14:10:39,314 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 247 transitions. Word has length 108 [2024-12-02 14:10:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:10:39,314 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 247 transitions. [2024-12-02 14:10:39,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:10:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 247 transitions. [2024-12-02 14:10:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 14:10:39,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:10:39,316 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:10:39,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:10:39,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:10:39,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:10:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1198175427, now seen corresponding path program 1 times [2024-12-02 14:10:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:10:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603908915] [2024-12-02 14:10:39,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:10:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:10:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:12:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:12:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:12:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603908915] [2024-12-02 14:12:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603908915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:12:11,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:12:11,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:12:11,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606634986] [2024-12-02 14:12:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:12:11,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:12:11,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:12:11,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:12:11,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:12:11,799 INFO L87 Difference]: Start difference. First operand 171 states and 247 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:12:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:12:12,930 INFO L93 Difference]: Finished difference Result 234 states and 316 transitions. [2024-12-02 14:12:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:12:12,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 109 [2024-12-02 14:12:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:12:12,932 INFO L225 Difference]: With dead ends: 234 [2024-12-02 14:12:12,932 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 14:12:12,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:12:12,932 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 127 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:12:12,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 448 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:12:12,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 14:12:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 172. [2024-12-02 14:12:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 120 states have internal predecessors, (152), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 14:12:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 248 transitions. [2024-12-02 14:12:12,949 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 248 transitions. Word has length 109 [2024-12-02 14:12:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:12:12,949 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 248 transitions. [2024-12-02 14:12:12,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:12:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 248 transitions. [2024-12-02 14:12:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:12:12,950 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:12:12,951 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:12:12,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:12:12,951 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:12:12,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:12:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash -793844676, now seen corresponding path program 1 times [2024-12-02 14:12:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:12:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634690007] [2024-12-02 14:12:12,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:12:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:12:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:12:12,994 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 14:12:12,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:12:12,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634690007] [2024-12-02 14:12:12,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634690007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:12:12,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:12:12,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:12:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815475696] [2024-12-02 14:12:12,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:12:12,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:12:12,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:12:12,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:12:12,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:12:12,995 INFO L87 Difference]: Start difference. First operand 172 states and 248 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:12:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:12:13,021 INFO L93 Difference]: Finished difference Result 277 states and 390 transitions. [2024-12-02 14:12:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:12:13,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 110 [2024-12-02 14:12:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:12:13,023 INFO L225 Difference]: With dead ends: 277 [2024-12-02 14:12:13,024 INFO L226 Difference]: Without dead ends: 199 [2024-12-02 14:12:13,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:12:13,025 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:12:13,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 165 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:12:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-12-02 14:12:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 172. [2024-12-02 14:12:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 120 states have (on average 1.225) internal successors, (147), 120 states have internal predecessors, (147), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 14:12:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 243 transitions. [2024-12-02 14:12:13,040 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 243 transitions. Word has length 110 [2024-12-02 14:12:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:12:13,040 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 243 transitions. [2024-12-02 14:12:13,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 14:12:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 243 transitions. [2024-12-02 14:12:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:12:13,041 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:12:13,041 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:12:13,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:12:13,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:12:13,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:12:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -113786306, now seen corresponding path program 1 times [2024-12-02 14:12:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:12:13,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790154306] [2024-12-02 14:12:13,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:12:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:12:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat