./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.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_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/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_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/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_853bae86-1d6c-45c8-800f-a5a4e26f786b/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 4b836ea2f262418da81f26dbfe56a862353221b7830dc2829bc30e02d19dd77f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:57:25,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:57:25,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:57:25,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:57:25,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:57:25,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:57:25,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:57:25,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:57:25,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:57:25,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:57:25,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:57:25,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:57:25,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:57:25,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:57:25,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:57:25,265 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:57:25,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:25,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:25,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:57:25,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:57:25,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:57:25,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:57:25,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:57:25,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:57:25,267 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_853bae86-1d6c-45c8-800f-a5a4e26f786b/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 -> 4b836ea2f262418da81f26dbfe56a862353221b7830dc2829bc30e02d19dd77f [2024-12-02 13:57:25,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:57:25,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:57:25,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:57:25,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:57:25,517 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:57:25,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.i [2024-12-02 13:57:28,331 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/data/d538456e7/1566c90f85a3442aad41fedb7371be1d/FLAGd35d9e4c7 [2024-12-02 13:57:28,527 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:57:28,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.i [2024-12-02 13:57:28,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/data/d538456e7/1566c90f85a3442aad41fedb7371be1d/FLAGd35d9e4c7 [2024-12-02 13:57:28,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/data/d538456e7/1566c90f85a3442aad41fedb7371be1d [2024-12-02 13:57:28,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:57:28,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:57:28,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:57:28,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:57:28,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:57:28,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68174e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28, skipping insertion in model container [2024-12-02 13:57:28,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,578 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:57:28,714 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_853bae86-1d6c-45c8-800f-a5a4e26f786b/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.i[916,929] [2024-12-02 13:57:28,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:57:28,764 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:57:28,774 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_853bae86-1d6c-45c8-800f-a5a4e26f786b/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-51.i[916,929] [2024-12-02 13:57:28,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:57:28,809 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:57:28,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28 WrapperNode [2024-12-02 13:57:28,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:57:28,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:57:28,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:57:28,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:57:28,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,848 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2024-12-02 13:57:28,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:57:28,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:57:28,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:57:28,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:57:28,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,873 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 13:57:28,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:57:28,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:57:28,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:57:28,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:57:28,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (1/1) ... [2024-12-02 13:57:28,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:28,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:57:28,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:57:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:57:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:57:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:57:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:57:28,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:57:28,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:57:29,023 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:57:29,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:57:29,221 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-12-02 13:57:29,221 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:57:29,230 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:57:29,230 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:57:29,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:29 BoogieIcfgContainer [2024-12-02 13:57:29,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:57:29,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:57:29,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:57:29,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:57:29,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:57:28" (1/3) ... [2024-12-02 13:57:29,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898b8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:29, skipping insertion in model container [2024-12-02 13:57:29,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:28" (2/3) ... [2024-12-02 13:57:29,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898b8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:29, skipping insertion in model container [2024-12-02 13:57:29,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:29" (3/3) ... [2024-12-02 13:57:29,241 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-51.i [2024-12-02 13:57:29,256 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:57:29,258 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-51.i that has 2 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:57:29,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:57:29,317 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;@3d7eba6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:57:29,317 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:57:29,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 35 states have internal predecessors, (45), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 13:57:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 13:57:29,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:29,331 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:29,331 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:29,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash -579945430, now seen corresponding path program 1 times [2024-12-02 13:57:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943829463] [2024-12-02 13:57:29,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-12-02 13:57:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943829463] [2024-12-02 13:57:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943829463] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:29,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427657481] [2024-12-02 13:57:29,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:29,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:29,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:29,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:57:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:29,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:57:29,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-12-02 13:57:29,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427657481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:29,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:29,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:57:29,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006952003] [2024-12-02 13:57:29,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:29,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:57:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:29,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:57:29,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:57:29,768 INFO L87 Difference]: Start difference. First operand has 60 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 35 states have internal predecessors, (45), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:57:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:29,792 INFO L93 Difference]: Finished difference Result 113 states and 199 transitions. [2024-12-02 13:57:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:57:29,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 139 [2024-12-02 13:57:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:29,801 INFO L225 Difference]: With dead ends: 113 [2024-12-02 13:57:29,801 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 13:57:29,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 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 13:57:29,807 INFO L435 NwaCegarLoop]: 83 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, 83 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 13:57:29,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 13:57:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 13:57:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 13:57:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2024-12-02 13:57:29,845 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 83 transitions. Word has length 139 [2024-12-02 13:57:29,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:29,845 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 83 transitions. [2024-12-02 13:57:29,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:57:29,846 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 83 transitions. [2024-12-02 13:57:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 13:57:29,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:29,849 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:29,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:57:30,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 13:57:30,049 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:30,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2117421082, now seen corresponding path program 1 times [2024-12-02 13:57:30,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:30,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795090312] [2024-12-02 13:57:30,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:30,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-12-02 13:57:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795090312] [2024-12-02 13:57:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795090312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:35,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:57:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104074108] [2024-12-02 13:57:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:35,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:57:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:35,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:57:35,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:57:35,129 INFO L87 Difference]: Start difference. First operand 56 states and 83 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:57:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:37,130 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2024-12-02 13:57:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:57:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2024-12-02 13:57:37,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:37,132 INFO L225 Difference]: With dead ends: 154 [2024-12-02 13:57:37,132 INFO L226 Difference]: Without dead ends: 152 [2024-12-02 13:57:37,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:57:37,133 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 133 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:37,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 421 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:57:37,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-02 13:57:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2024-12-02 13:57:37,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 46 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 13:57:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 179 transitions. [2024-12-02 13:57:37,156 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 179 transitions. Word has length 140 [2024-12-02 13:57:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:37,156 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 179 transitions. [2024-12-02 13:57:37,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:57:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 179 transitions. [2024-12-02 13:57:37,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-12-02 13:57:37,159 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:37,159 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:37,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:57:37,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:37,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1437362712, now seen corresponding path program 1 times [2024-12-02 13:57:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:37,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40482086] [2024-12-02 13:57:37,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-12-02 13:57:43,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40482086] [2024-12-02 13:57:43,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40482086] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:43,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:43,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:57:43,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029364052] [2024-12-02 13:57:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:43,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:57:43,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:43,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:57:43,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:57:43,313 INFO L87 Difference]: Start difference. First operand 120 states and 179 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:57:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:45,337 INFO L93 Difference]: Finished difference Result 185 states and 260 transitions. [2024-12-02 13:57:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:57:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2024-12-02 13:57:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:45,339 INFO L225 Difference]: With dead ends: 185 [2024-12-02 13:57:45,339 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 13:57:45,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:57:45,340 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 117 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:45,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 648 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:57:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 13:57:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 152. [2024-12-02 13:57:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.202247191011236) internal successors, (107), 90 states have internal predecessors, (107), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:57:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2024-12-02 13:57:45,379 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 140 [2024-12-02 13:57:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:45,380 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2024-12-02 13:57:45,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:57:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2024-12-02 13:57:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 13:57:45,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:45,383 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:45,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:57:45,383 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:45,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1451104389, now seen corresponding path program 1 times [2024-12-02 13:57:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628453886] [2024-12-02 13:57:45,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:45,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-12-02 13:58:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628453886] [2024-12-02 13:58:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628453886] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:07,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 13:58:07,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402876809] [2024-12-02 13:58:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:07,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:58:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:07,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:58:07,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:58:07,930 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:58:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:23,553 INFO L93 Difference]: Finished difference Result 201 states and 276 transitions. [2024-12-02 13:58:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:58:23,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 141 [2024-12-02 13:58:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:23,557 INFO L225 Difference]: With dead ends: 201 [2024-12-02 13:58:23,557 INFO L226 Difference]: Without dead ends: 199 [2024-12-02 13:58:23,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2024-12-02 13:58:23,559 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 203 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:23,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 424 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 13:58:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-12-02 13:58:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2024-12-02 13:58:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 59 states have call successors, (59), 3 states have call predecessors, (59), 3 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:58:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 230 transitions. [2024-12-02 13:58:23,593 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 230 transitions. Word has length 141 [2024-12-02 13:58:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:23,593 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 230 transitions. [2024-12-02 13:58:23,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:58:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 230 transitions. [2024-12-02 13:58:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 13:58:23,596 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:23,596 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:23,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:58:23,596 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:23,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1449257347, now seen corresponding path program 1 times [2024-12-02 13:58:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469438777] [2024-12-02 13:58:23,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 13:58:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799748267] [2024-12-02 13:58:23,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:23,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:58:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:58:23,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:58:23,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:58:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:23,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:58:23,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:58:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 336 proven. 54 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2024-12-02 13:58:24,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:58:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469438777] [2024-12-02 13:58:28,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 13:58:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799748267] [2024-12-02 13:58:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799748267] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:58:28,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:58:28,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-12-02 13:58:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901228522] [2024-12-02 13:58:28,915 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 13:58:28,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:58:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:28,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:58:28,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2024-12-02 13:58:28,916 INFO L87 Difference]: Start difference. First operand 155 states and 230 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:58:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:29,753 INFO L93 Difference]: Finished difference Result 331 states and 477 transitions. [2024-12-02 13:58:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:58:29,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 141 [2024-12-02 13:58:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:29,756 INFO L225 Difference]: With dead ends: 331 [2024-12-02 13:58:29,756 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 13:58:29,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=50, Invalid=105, Unknown=1, NotChecked=0, Total=156 [2024-12-02 13:58:29,758 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 39 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:29,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 135 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:58:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 13:58:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 164. [2024-12-02 13:58:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 98 states have (on average 1.153061224489796) internal successors, (113), 99 states have internal predecessors, (113), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:58:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 231 transitions. [2024-12-02 13:58:29,789 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 231 transitions. Word has length 141 [2024-12-02 13:58:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:29,790 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 231 transitions. [2024-12-02 13:58:29,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 3 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 13:58:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 231 transitions. [2024-12-02 13:58:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 13:58:29,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:29,792 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:29,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:58:29,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:58:29,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:29,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1844131399, now seen corresponding path program 1 times [2024-12-02 13:58:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:29,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765058068] [2024-12-02 13:58:29,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:29,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-12-02 13:58:52,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:52,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765058068] [2024-12-02 13:58:52,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765058068] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:52,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:52,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:58:52,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219801043] [2024-12-02 13:58:52,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:52,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:58:52,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:52,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:58:52,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:58:52,206 INFO L87 Difference]: Start difference. First operand 164 states and 231 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:59:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:01,370 INFO L93 Difference]: Finished difference Result 181 states and 248 transitions. [2024-12-02 13:59:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 13:59:01,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2024-12-02 13:59:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:01,372 INFO L225 Difference]: With dead ends: 181 [2024-12-02 13:59:01,372 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 13:59:01,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:59:01,373 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 95 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:01,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 559 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 13:59:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 13:59:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 159. [2024-12-02 13:59:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 94 states have internal predecessors, (106), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:59:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 224 transitions. [2024-12-02 13:59:01,407 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 224 transitions. Word has length 141 [2024-12-02 13:59:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:01,407 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 224 transitions. [2024-12-02 13:59:01,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 13:59:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 224 transitions. [2024-12-02 13:59:01,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-12-02 13:59:01,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:01,411 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:01,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:59:01,411 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:01,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 372122981, now seen corresponding path program 1 times [2024-12-02 13:59:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116144914] [2024-12-02 13:59:01,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 4143 trivial. 0 not checked. [2024-12-02 13:59:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116144914] [2024-12-02 13:59:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116144914] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:01,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:59:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191382245] [2024-12-02 13:59:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:01,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:59:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:01,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:59:01,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:59:01,535 INFO L87 Difference]: Start difference. First operand 159 states and 224 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-12-02 13:59:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:01,623 INFO L93 Difference]: Finished difference Result 341 states and 474 transitions. [2024-12-02 13:59:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:59:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 278 [2024-12-02 13:59:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:01,626 INFO L225 Difference]: With dead ends: 341 [2024-12-02 13:59:01,626 INFO L226 Difference]: Without dead ends: 185 [2024-12-02 13:59:01,627 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 13:59:01,627 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 9 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:01,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 161 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:59:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-12-02 13:59:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2024-12-02 13:59:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 99 states have (on average 1.121212121212121) internal successors, (111), 100 states have internal predecessors, (111), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:59:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 229 transitions. [2024-12-02 13:59:01,668 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 229 transitions. Word has length 278 [2024-12-02 13:59:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:01,669 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 229 transitions. [2024-12-02 13:59:01,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-12-02 13:59:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 229 transitions. [2024-12-02 13:59:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 13:59:01,673 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:01,673 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:01,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:59:01,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:01,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash -803457850, now seen corresponding path program 1 times [2024-12-02 13:59:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:01,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254758393] [2024-12-02 13:59:01,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2024-12-02 13:59:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:05,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254758393] [2024-12-02 13:59:05,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254758393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:05,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:05,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:59:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733659307] [2024-12-02 13:59:05,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:05,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:59:05,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:05,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:59:05,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:59:05,740 INFO L87 Difference]: Start difference. First operand 165 states and 229 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:06,946 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2024-12-02 13:59:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:59:06,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 279 [2024-12-02 13:59:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:06,948 INFO L225 Difference]: With dead ends: 199 [2024-12-02 13:59:06,948 INFO L226 Difference]: Without dead ends: 197 [2024-12-02 13:59:06,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:59:06,949 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 15 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:06,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 397 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:59:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-12-02 13:59:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 169. [2024-12-02 13:59:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 104 states have internal predecessors, (117), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:59:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2024-12-02 13:59:06,979 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 279 [2024-12-02 13:59:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:06,980 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2024-12-02 13:59:06,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2024-12-02 13:59:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-12-02 13:59:06,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:06,982 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:06,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:59:06,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:06,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash -123399480, now seen corresponding path program 1 times [2024-12-02 13:59:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:06,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936427109] [2024-12-02 13:59:06,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2024-12-02 13:59:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936427109] [2024-12-02 13:59:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936427109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:09,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:09,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:59:09,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515493870] [2024-12-02 13:59:09,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:09,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:59:09,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:09,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:59:09,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:59:09,427 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:10,171 INFO L93 Difference]: Finished difference Result 198 states and 265 transitions. [2024-12-02 13:59:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:59:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 279 [2024-12-02 13:59:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:10,173 INFO L225 Difference]: With dead ends: 198 [2024-12-02 13:59:10,173 INFO L226 Difference]: Without dead ends: 196 [2024-12-02 13:59:10,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:59:10,174 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 19 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:10,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:59:10,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-12-02 13:59:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 165. [2024-12-02 13:59:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 99 states have (on average 1.121212121212121) internal successors, (111), 100 states have internal predecessors, (111), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:59:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 229 transitions. [2024-12-02 13:59:10,197 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 229 transitions. Word has length 279 [2024-12-02 13:59:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:10,198 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 229 transitions. [2024-12-02 13:59:10,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 229 transitions. [2024-12-02 13:59:10,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 13:59:10,199 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:10,199 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:10,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:59:10,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:10,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 627050139, now seen corresponding path program 1 times [2024-12-02 13:59:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275609991] [2024-12-02 13:59:10,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:10,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2024-12-02 13:59:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275609991] [2024-12-02 13:59:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275609991] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:20,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:59:20,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:59:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543244520] [2024-12-02 13:59:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:20,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:59:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:20,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:59:20,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:59:20,934 INFO L87 Difference]: Start difference. First operand 165 states and 229 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:24,602 INFO L93 Difference]: Finished difference Result 207 states and 274 transitions. [2024-12-02 13:59:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:59:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 280 [2024-12-02 13:59:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:24,605 INFO L225 Difference]: With dead ends: 207 [2024-12-02 13:59:24,605 INFO L226 Difference]: Without dead ends: 205 [2024-12-02 13:59:24,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:59:24,606 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 25 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:24,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 482 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:59:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-12-02 13:59:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 170. [2024-12-02 13:59:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 59 states have call successors, (59), 6 states have call predecessors, (59), 6 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-12-02 13:59:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2024-12-02 13:59:24,635 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 280 [2024-12-02 13:59:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:24,635 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2024-12-02 13:59:24,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 13:59:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2024-12-02 13:59:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-12-02 13:59:24,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:24,637 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:24,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:59:24,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:24,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 234023129, now seen corresponding path program 1 times [2024-12-02 13:59:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758818013] [2024-12-02 13:59:24,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:24,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4185 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4176 trivial. 0 not checked. [2024-12-02 13:59:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758818013] [2024-12-02 13:59:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758818013] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484743134] [2024-12-02 13:59:35,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:35,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:35,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:35,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_853bae86-1d6c-45c8-800f-a5a4e26f786b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:59:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:35,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 13:59:35,369 INFO L279 TraceCheckSpWp]: Computing forward predicates...