./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX --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 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:33:49,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:33:49,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:33:49,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:33:49,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:33:49,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:33:49,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:33:49,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:33:49,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:33:49,177 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:33:49,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:33:49,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:33:49,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:33:49,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:33:49,180 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:33:49,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:33:49,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:33:49,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:33:49,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:33:49,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:33:49,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:33:49,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:33:49,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:33:49,188 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:33:49,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:33:49,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:33:49,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:33:49,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:33:49,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:33:49,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:33:49,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:33:49,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:33:49,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:33:49,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:33:49,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:33:49,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:33:49,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:33:49,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:33:49,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:33:49,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:33:49,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:33:49,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:33:49,197 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f [2024-11-08 17:33:49,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:33:49,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:33:49,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:33:49,533 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:33:49,533 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:33:49,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-08 17:33:51,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:33:51,726 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:33:51,727 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2024-11-08 17:33:51,739 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/data/5f5630f2c/51daf627b5d84fb7ba27c2f001b208e7/FLAG519638159 [2024-11-08 17:33:51,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/data/5f5630f2c/51daf627b5d84fb7ba27c2f001b208e7 [2024-11-08 17:33:51,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:33:51,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:33:51,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:33:51,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:33:51,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:33:51,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:33:51" (1/1) ... [2024-11-08 17:33:51,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9f9bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:51, skipping insertion in model container [2024-11-08 17:33:51,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:33:51" (1/1) ... [2024-11-08 17:33:51,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:33:52,059 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_10382661-d9e3-44d8-9743-9229a7de7e52/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2024-11-08 17:33:52,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:33:52,075 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:33:52,121 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_10382661-d9e3-44d8-9743-9229a7de7e52/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2024-11-08 17:33:52,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:33:52,141 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:33:52,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52 WrapperNode [2024-11-08 17:33:52,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:33:52,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:33:52,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:33:52,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:33:52,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,187 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 221 [2024-11-08 17:33:52,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:33:52,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:33:52,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:33:52,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:33:52,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,217 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:33:52,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:33:52,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:33:52,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:33:52,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:33:52,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (1/1) ... [2024-11-08 17:33:52,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:33:52,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:52,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:33:52,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:33:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:33:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:33:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:33:52,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:33:52,402 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:33:52,404 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:33:52,801 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-08 17:33:52,801 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:33:52,834 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:33:52,834 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:33:52,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:33:52 BoogieIcfgContainer [2024-11-08 17:33:52,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:33:52,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:33:52,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:33:52,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:33:52,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:33:51" (1/3) ... [2024-11-08 17:33:52,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62689376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:33:52, skipping insertion in model container [2024-11-08 17:33:52,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:33:52" (2/3) ... [2024-11-08 17:33:52,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62689376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:33:52, skipping insertion in model container [2024-11-08 17:33:52,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:33:52" (3/3) ... [2024-11-08 17:33:52,846 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2024-11-08 17:33:52,862 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:33:52,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:33:52,931 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:33:52,939 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;@296c4a5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:33:52,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:33:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:33:52,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:52,956 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:52,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:52,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1775727728, now seen corresponding path program 1 times [2024-11-08 17:33:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:52,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916532475] [2024-11-08 17:33:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916532475] [2024-11-08 17:33:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916532475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:53,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:53,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:33:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577427225] [2024-11-08 17:33:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:53,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:33:53,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:33:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:33:53,315 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:53,337 INFO L93 Difference]: Finished difference Result 91 states and 149 transitions. [2024-11-08 17:33:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:33:53,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:33:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:53,347 INFO L225 Difference]: With dead ends: 91 [2024-11-08 17:33:53,347 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 17:33:53,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:33:53,353 INFO L432 NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:53,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:53,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 17:33:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 17:33:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2024-11-08 17:33:53,395 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 19 [2024-11-08 17:33:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:53,396 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2024-11-08 17:33:53,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2024-11-08 17:33:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:33:53,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:53,398 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:53,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:33:53,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:53,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1508122318, now seen corresponding path program 1 times [2024-11-08 17:33:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779797822] [2024-11-08 17:33:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:53,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779797822] [2024-11-08 17:33:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779797822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:53,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:53,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801133479] [2024-11-08 17:33:53,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:53,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:53,768 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:53,865 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2024-11-08 17:33:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:33:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:53,867 INFO L225 Difference]: With dead ends: 90 [2024-11-08 17:33:53,868 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 17:33:53,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:53,870 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:53,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 17:33:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 17:33:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-08 17:33:53,878 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 19 [2024-11-08 17:33:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:53,878 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-08 17:33:53,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-08 17:33:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 17:33:53,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:53,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:53,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:33:53,881 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:53,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -998808917, now seen corresponding path program 1 times [2024-11-08 17:33:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:53,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504961180] [2024-11-08 17:33:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504961180] [2024-11-08 17:33:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504961180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955585904] [2024-11-08 17:33:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:54,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:54,100 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:54,269 INFO L93 Difference]: Finished difference Result 246 states and 372 transitions. [2024-11-08 17:33:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:33:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-08 17:33:54,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:54,272 INFO L225 Difference]: With dead ends: 246 [2024-11-08 17:33:54,273 INFO L226 Difference]: Without dead ends: 214 [2024-11-08 17:33:54,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:33:54,274 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 327 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:54,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 350 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-08 17:33:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 84. [2024-11-08 17:33:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 83 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2024-11-08 17:33:54,298 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 34 [2024-11-08 17:33:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:54,298 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2024-11-08 17:33:54,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2024-11-08 17:33:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 17:33:54,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:54,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:54,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:33:54,300 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:54,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 868097347, now seen corresponding path program 1 times [2024-11-08 17:33:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309432486] [2024-11-08 17:33:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309432486] [2024-11-08 17:33:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309432486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:54,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:54,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400386930] [2024-11-08 17:33:54,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:54,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:54,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:54,685 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:54,804 INFO L93 Difference]: Finished difference Result 148 states and 217 transitions. [2024-11-08 17:33:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:54,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 17:33:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:54,807 INFO L225 Difference]: With dead ends: 148 [2024-11-08 17:33:54,808 INFO L226 Difference]: Without dead ends: 86 [2024-11-08 17:33:54,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:33:54,809 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 109 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:54,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 159 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-08 17:33:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-08 17:33:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4216867469879517) internal successors, (118), 83 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2024-11-08 17:33:54,827 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 36 [2024-11-08 17:33:54,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:54,827 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2024-11-08 17:33:54,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2024-11-08 17:33:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 17:33:54,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:54,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:54,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:33:54,831 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:54,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 801603835, now seen corresponding path program 1 times [2024-11-08 17:33:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:54,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680254108] [2024-11-08 17:33:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680254108] [2024-11-08 17:33:54,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680254108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:54,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:54,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809651555] [2024-11-08 17:33:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:54,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:54,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:54,953 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:54,988 INFO L93 Difference]: Finished difference Result 197 states and 291 transitions. [2024-11-08 17:33:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-08 17:33:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:54,990 INFO L225 Difference]: With dead ends: 197 [2024-11-08 17:33:54,990 INFO L226 Difference]: Without dead ends: 135 [2024-11-08 17:33:54,991 INFO L431 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 [2024-11-08 17:33:54,992 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:54,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-08 17:33:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2024-11-08 17:33:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 130 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 187 transitions. [2024-11-08 17:33:55,011 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 187 transitions. Word has length 36 [2024-11-08 17:33:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:55,011 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 187 transitions. [2024-11-08 17:33:55,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 187 transitions. [2024-11-08 17:33:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 17:33:55,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:55,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:55,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:33:55,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:55,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash 726490763, now seen corresponding path program 1 times [2024-11-08 17:33:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:55,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654872207] [2024-11-08 17:33:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:55,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654872207] [2024-11-08 17:33:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654872207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:33:55,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429607667] [2024-11-08 17:33:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:33:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:33:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:33:55,306 INFO L87 Difference]: Start difference. First operand 131 states and 187 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:55,363 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2024-11-08 17:33:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:33:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-08 17:33:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:55,364 INFO L225 Difference]: With dead ends: 139 [2024-11-08 17:33:55,365 INFO L226 Difference]: Without dead ends: 137 [2024-11-08 17:33:55,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:33:55,366 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:55,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-08 17:33:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-08 17:33:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.411764705882353) internal successors, (192), 136 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 192 transitions. [2024-11-08 17:33:55,382 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 192 transitions. Word has length 37 [2024-11-08 17:33:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:55,382 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 192 transitions. [2024-11-08 17:33:55,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 192 transitions. [2024-11-08 17:33:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 17:33:55,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:55,384 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:55,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:33:55,385 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:55,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:55,385 INFO L85 PathProgramCache]: Analyzing trace with hash 706473251, now seen corresponding path program 1 times [2024-11-08 17:33:55,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:55,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829506767] [2024-11-08 17:33:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:55,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829506767] [2024-11-08 17:33:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829506767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:55,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:55,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310668563] [2024-11-08 17:33:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:55,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:55,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:55,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:55,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:55,450 INFO L87 Difference]: Start difference. First operand 137 states and 192 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:55,478 INFO L93 Difference]: Finished difference Result 351 states and 504 transitions. [2024-11-08 17:33:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 17:33:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:55,481 INFO L225 Difference]: With dead ends: 351 [2024-11-08 17:33:55,481 INFO L226 Difference]: Without dead ends: 236 [2024-11-08 17:33:55,483 INFO L431 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 [2024-11-08 17:33:55,484 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:55,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 154 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-08 17:33:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2024-11-08 17:33:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4120171673819744) internal successors, (329), 233 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 329 transitions. [2024-11-08 17:33:55,509 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 329 transitions. Word has length 38 [2024-11-08 17:33:55,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:55,509 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 329 transitions. [2024-11-08 17:33:55,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 329 transitions. [2024-11-08 17:33:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 17:33:55,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:55,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:55,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:33:55,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:55,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1807561181, now seen corresponding path program 1 times [2024-11-08 17:33:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633863846] [2024-11-08 17:33:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:55,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:55,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633863846] [2024-11-08 17:33:55,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633863846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:55,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:55,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942223132] [2024-11-08 17:33:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:55,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:55,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:55,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:55,583 INFO L87 Difference]: Start difference. First operand 234 states and 329 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:55,622 INFO L93 Difference]: Finished difference Result 626 states and 887 transitions. [2024-11-08 17:33:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 17:33:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:55,625 INFO L225 Difference]: With dead ends: 626 [2024-11-08 17:33:55,625 INFO L226 Difference]: Without dead ends: 414 [2024-11-08 17:33:55,626 INFO L431 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 [2024-11-08 17:33:55,626 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:55,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-08 17:33:55,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2024-11-08 17:33:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.389294403892944) internal successors, (571), 411 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 571 transitions. [2024-11-08 17:33:55,646 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 571 transitions. Word has length 38 [2024-11-08 17:33:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:55,646 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 571 transitions. [2024-11-08 17:33:55,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 571 transitions. [2024-11-08 17:33:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 17:33:55,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:55,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:55,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:33:55,651 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:55,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1370800094, now seen corresponding path program 1 times [2024-11-08 17:33:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068150057] [2024-11-08 17:33:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068150057] [2024-11-08 17:33:55,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068150057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:55,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:55,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949978764] [2024-11-08 17:33:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:55,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:55,753 INFO L87 Difference]: Start difference. First operand 412 states and 571 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:55,785 INFO L93 Difference]: Finished difference Result 835 states and 1177 transitions. [2024-11-08 17:33:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-08 17:33:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:55,792 INFO L225 Difference]: With dead ends: 835 [2024-11-08 17:33:55,792 INFO L226 Difference]: Without dead ends: 600 [2024-11-08 17:33:55,793 INFO L431 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 [2024-11-08 17:33:55,796 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:55,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-08 17:33:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2024-11-08 17:33:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.3819095477386936) internal successors, (825), 597 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 825 transitions. [2024-11-08 17:33:55,823 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 825 transitions. Word has length 40 [2024-11-08 17:33:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:55,825 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 825 transitions. [2024-11-08 17:33:55,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 825 transitions. [2024-11-08 17:33:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 17:33:55,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:55,827 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:55,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:33:55,830 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:55,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:55,830 INFO L85 PathProgramCache]: Analyzing trace with hash 420330959, now seen corresponding path program 1 times [2024-11-08 17:33:55,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:55,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312059661] [2024-11-08 17:33:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:55,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:33:55,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:55,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312059661] [2024-11-08 17:33:55,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312059661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:55,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:55,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862525901] [2024-11-08 17:33:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:55,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:55,998 INFO L87 Difference]: Start difference. First operand 598 states and 825 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:56,129 INFO L93 Difference]: Finished difference Result 2454 states and 3405 transitions. [2024-11-08 17:33:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 17:33:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:56,137 INFO L225 Difference]: With dead ends: 2454 [2024-11-08 17:33:56,137 INFO L226 Difference]: Without dead ends: 1880 [2024-11-08 17:33:56,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:33:56,139 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 176 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:56,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 281 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2024-11-08 17:33:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1170. [2024-11-08 17:33:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.3798118049615056) internal successors, (1613), 1169 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1613 transitions. [2024-11-08 17:33:56,192 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1613 transitions. Word has length 53 [2024-11-08 17:33:56,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:56,193 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1613 transitions. [2024-11-08 17:33:56,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1613 transitions. [2024-11-08 17:33:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 17:33:56,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:56,195 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:56,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:33:56,196 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2093703473, now seen corresponding path program 1 times [2024-11-08 17:33:56,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:56,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176557848] [2024-11-08 17:33:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:33:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176557848] [2024-11-08 17:33:56,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176557848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:56,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394195124] [2024-11-08 17:33:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:56,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:56,354 INFO L87 Difference]: Start difference. First operand 1170 states and 1613 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:56,507 INFO L93 Difference]: Finished difference Result 3026 states and 4193 transitions. [2024-11-08 17:33:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 17:33:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:56,518 INFO L225 Difference]: With dead ends: 3026 [2024-11-08 17:33:56,518 INFO L226 Difference]: Without dead ends: 2452 [2024-11-08 17:33:56,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:33:56,521 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 177 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:56,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 278 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2024-11-08 17:33:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2030. [2024-11-08 17:33:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 1.3725973385904386) internal successors, (2785), 2029 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2785 transitions. [2024-11-08 17:33:56,606 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2785 transitions. Word has length 53 [2024-11-08 17:33:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:56,606 INFO L471 AbstractCegarLoop]: Abstraction has 2030 states and 2785 transitions. [2024-11-08 17:33:56,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2785 transitions. [2024-11-08 17:33:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 17:33:56,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:56,608 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:56,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:33:56,608 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:56,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1138081945, now seen corresponding path program 1 times [2024-11-08 17:33:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751210486] [2024-11-08 17:33:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:56,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751210486] [2024-11-08 17:33:56,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751210486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:56,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:56,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:56,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189302535] [2024-11-08 17:33:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:56,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:56,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:56,738 INFO L87 Difference]: Start difference. First operand 2030 states and 2785 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:56,795 INFO L93 Difference]: Finished difference Result 3506 states and 4848 transitions. [2024-11-08 17:33:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 17:33:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:56,800 INFO L225 Difference]: With dead ends: 3506 [2024-11-08 17:33:56,801 INFO L226 Difference]: Without dead ends: 1500 [2024-11-08 17:33:56,803 INFO L431 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 [2024-11-08 17:33:56,803 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 34 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:56,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2024-11-08 17:33:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1498. [2024-11-08 17:33:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 1.3740814963259853) internal successors, (2057), 1497 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2057 transitions. [2024-11-08 17:33:56,862 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2057 transitions. Word has length 55 [2024-11-08 17:33:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:56,862 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 2057 transitions. [2024-11-08 17:33:56,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2057 transitions. [2024-11-08 17:33:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 17:33:56,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:56,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:56,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:33:56,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:56,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:56,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1265964426, now seen corresponding path program 1 times [2024-11-08 17:33:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:56,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668314533] [2024-11-08 17:33:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:56,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:33:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668314533] [2024-11-08 17:33:57,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668314533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:57,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:33:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650119614] [2024-11-08 17:33:57,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:57,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:33:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:57,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:33:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:33:57,009 INFO L87 Difference]: Start difference. First operand 1498 states and 2057 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:57,154 INFO L93 Difference]: Finished difference Result 2754 states and 3813 transitions. [2024-11-08 17:33:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:33:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-08 17:33:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:57,162 INFO L225 Difference]: With dead ends: 2754 [2024-11-08 17:33:57,162 INFO L226 Difference]: Without dead ends: 2336 [2024-11-08 17:33:57,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:33:57,166 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 171 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:57,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 304 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:33:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2024-11-08 17:33:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1914. [2024-11-08 17:33:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 1.3763721902770518) internal successors, (2633), 1913 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2633 transitions. [2024-11-08 17:33:57,258 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2633 transitions. Word has length 55 [2024-11-08 17:33:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:57,258 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2633 transitions. [2024-11-08 17:33:57,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2633 transitions. [2024-11-08 17:33:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 17:33:57,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:57,260 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:57,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:33:57,260 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:57,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash 581346069, now seen corresponding path program 1 times [2024-11-08 17:33:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182105696] [2024-11-08 17:33:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:57,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182105696] [2024-11-08 17:33:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182105696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697304879] [2024-11-08 17:33:57,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:57,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:57,371 INFO L87 Difference]: Start difference. First operand 1914 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:57,415 INFO L93 Difference]: Finished difference Result 2854 states and 3931 transitions. [2024-11-08 17:33:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:57,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-08 17:33:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:57,419 INFO L225 Difference]: With dead ends: 2854 [2024-11-08 17:33:57,419 INFO L226 Difference]: Without dead ends: 980 [2024-11-08 17:33:57,421 INFO L431 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 [2024-11-08 17:33:57,422 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:57,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-08 17:33:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 978. [2024-11-08 17:33:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3500511770726715) internal successors, (1319), 977 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1319 transitions. [2024-11-08 17:33:57,473 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1319 transitions. Word has length 56 [2024-11-08 17:33:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:57,473 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1319 transitions. [2024-11-08 17:33:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1319 transitions. [2024-11-08 17:33:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 17:33:57,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:57,475 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:57,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:33:57,475 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:57,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1422690649, now seen corresponding path program 1 times [2024-11-08 17:33:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:57,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435312797] [2024-11-08 17:33:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435312797] [2024-11-08 17:33:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435312797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:33:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:33:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:33:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149819042] [2024-11-08 17:33:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:33:57,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:33:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:33:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:33:57,595 INFO L87 Difference]: Start difference. First operand 978 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:33:57,623 INFO L93 Difference]: Finished difference Result 1450 states and 1960 transitions. [2024-11-08 17:33:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:33:57,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-08 17:33:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:33:57,625 INFO L225 Difference]: With dead ends: 1450 [2024-11-08 17:33:57,625 INFO L226 Difference]: Without dead ends: 512 [2024-11-08 17:33:57,628 INFO L431 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 [2024-11-08 17:33:57,628 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:33:57,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:33:57,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-08 17:33:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2024-11-08 17:33:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.3182711198428292) internal successors, (671), 509 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 671 transitions. [2024-11-08 17:33:57,650 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 671 transitions. Word has length 58 [2024-11-08 17:33:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:33:57,651 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 671 transitions. [2024-11-08 17:33:57,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:33:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 671 transitions. [2024-11-08 17:33:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 17:33:57,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:33:57,654 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:33:57,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:33:57,655 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:33:57,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:33:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -793368391, now seen corresponding path program 1 times [2024-11-08 17:33:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:33:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389623478] [2024-11-08 17:33:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:33:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:33:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:33:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389623478] [2024-11-08 17:33:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389623478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:33:58,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939180157] [2024-11-08 17:33:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:33:58,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:33:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:33:58,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:33:58,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:33:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:33:58,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 17:33:58,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:33:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:33:58,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:33:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:33:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939180157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:33:58,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:33:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-08 17:33:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197993639] [2024-11-08 17:33:58,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:33:58,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 17:33:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:33:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 17:33:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:33:58,977 INFO L87 Difference]: Start difference. First operand 510 states and 671 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:34:01,082 INFO L93 Difference]: Finished difference Result 2617 states and 3443 transitions. [2024-11-08 17:34:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 17:34:01,083 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 17:34:01,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:34:01,090 INFO L225 Difference]: With dead ends: 2617 [2024-11-08 17:34:01,090 INFO L226 Difference]: Without dead ends: 2147 [2024-11-08 17:34:01,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=371, Invalid=1269, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:34:01,092 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 982 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:34:01,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 452 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:34:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-08 17:34:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2113. [2024-11-08 17:34:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 1.2471590909090908) internal successors, (2634), 2112 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2634 transitions. [2024-11-08 17:34:01,206 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2634 transitions. Word has length 60 [2024-11-08 17:34:01,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:34:01,206 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2634 transitions. [2024-11-08 17:34:01,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2634 transitions. [2024-11-08 17:34:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 17:34:01,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:34:01,209 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:34:01,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:34:01,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:34:01,413 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:34:01,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:34:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1194136894, now seen corresponding path program 1 times [2024-11-08 17:34:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:34:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658351806] [2024-11-08 17:34:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:34:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:34:02,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658351806] [2024-11-08 17:34:02,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658351806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:34:02,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952329916] [2024-11-08 17:34:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:02,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:02,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:34:02,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:34:02,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:34:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:02,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:34:02,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:02,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:34:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952329916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:34:03,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:34:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-08 17:34:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112587373] [2024-11-08 17:34:03,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:34:03,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:34:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:34:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:34:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:34:03,756 INFO L87 Difference]: Start difference. First operand 2113 states and 2634 transitions. Second operand has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:34:06,043 INFO L93 Difference]: Finished difference Result 10001 states and 12601 transitions. [2024-11-08 17:34:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:34:06,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 17:34:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:34:06,065 INFO L225 Difference]: With dead ends: 10001 [2024-11-08 17:34:06,065 INFO L226 Difference]: Without dead ends: 8094 [2024-11-08 17:34:06,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=551, Invalid=2205, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 17:34:06,070 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 916 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:34:06,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 983 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:34:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8094 states. [2024-11-08 17:34:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8094 to 7958. [2024-11-08 17:34:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7958 states, 7957 states have (on average 1.2184240291567174) internal successors, (9695), 7957 states have internal predecessors, (9695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7958 states to 7958 states and 9695 transitions. [2024-11-08 17:34:06,544 INFO L78 Accepts]: Start accepts. Automaton has 7958 states and 9695 transitions. Word has length 61 [2024-11-08 17:34:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:34:06,544 INFO L471 AbstractCegarLoop]: Abstraction has 7958 states and 9695 transitions. [2024-11-08 17:34:06,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 7958 states and 9695 transitions. [2024-11-08 17:34:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:34:06,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:34:06,546 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:34:06,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:34:06,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:34:06,747 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:34:06,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:34:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -510456037, now seen corresponding path program 1 times [2024-11-08 17:34:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:34:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780489998] [2024-11-08 17:34:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:34:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:34:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780489998] [2024-11-08 17:34:08,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780489998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:34:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144443737] [2024-11-08 17:34:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:08,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:08,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:34:08,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:34:08,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:34:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:08,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 17:34:08,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:11,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:34:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144443737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:34:13,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:34:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 44 [2024-11-08 17:34:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45912164] [2024-11-08 17:34:13,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:34:13,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 17:34:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:34:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 17:34:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1690, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 17:34:13,847 INFO L87 Difference]: Start difference. First operand 7958 states and 9695 transitions. Second operand has 44 states, 44 states have (on average 3.75) internal successors, (165), 44 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:34:51,724 INFO L93 Difference]: Finished difference Result 17759 states and 21936 transitions. [2024-11-08 17:34:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-08 17:34:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.75) internal successors, (165), 44 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 17:34:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:34:51,771 INFO L225 Difference]: With dead ends: 17759 [2024-11-08 17:34:51,771 INFO L226 Difference]: Without dead ends: 12679 [2024-11-08 17:34:51,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9965 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=6507, Invalid=21215, Unknown=0, NotChecked=0, Total=27722 [2024-11-08 17:34:51,787 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 3851 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3851 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:34:51,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3851 Valid, 1892 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 17:34:51,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12679 states. [2024-11-08 17:34:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12679 to 8338. [2024-11-08 17:34:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8338 states, 8337 states have (on average 1.2308984047019311) internal successors, (10262), 8337 states have internal predecessors, (10262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8338 states to 8338 states and 10262 transitions. [2024-11-08 17:34:52,641 INFO L78 Accepts]: Start accepts. Automaton has 8338 states and 10262 transitions. Word has length 62 [2024-11-08 17:34:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:34:52,642 INFO L471 AbstractCegarLoop]: Abstraction has 8338 states and 10262 transitions. [2024-11-08 17:34:52,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.75) internal successors, (165), 44 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:34:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 8338 states and 10262 transitions. [2024-11-08 17:34:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 17:34:52,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:34:52,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:34:52,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:34:52,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:34:52,849 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:34:52,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:34:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1348908174, now seen corresponding path program 1 times [2024-11-08 17:34:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:34:52,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496484880] [2024-11-08 17:34:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:52,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:34:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:34:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496484880] [2024-11-08 17:34:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496484880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:34:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235929518] [2024-11-08 17:34:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:34:54,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:34:54,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:34:54,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:34:54,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:34:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:34:54,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:34:54,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:34:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:34:58,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:35:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:35:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235929518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:35:04,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:35:04,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 20] total 58 [2024-11-08 17:35:04,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808150189] [2024-11-08 17:35:04,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:35:04,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 17:35:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:35:04,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 17:35:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2922, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 17:35:04,259 INFO L87 Difference]: Start difference. First operand 8338 states and 10262 transitions. Second operand has 58 states, 58 states have (on average 2.9482758620689653) internal successors, (171), 58 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:35:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:35:41,492 INFO L93 Difference]: Finished difference Result 13672 states and 16805 transitions. [2024-11-08 17:35:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-08 17:35:41,493 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.9482758620689653) internal successors, (171), 58 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 17:35:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:35:41,518 INFO L225 Difference]: With dead ends: 13672 [2024-11-08 17:35:41,518 INFO L226 Difference]: Without dead ends: 12143 [2024-11-08 17:35:41,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10023 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=5563, Invalid=24193, Unknown=0, NotChecked=0, Total=29756 [2024-11-08 17:35:41,530 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 2813 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:35:41,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2813 Valid, 3061 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-08 17:35:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2024-11-08 17:35:42,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 9298. [2024-11-08 17:35:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9298 states, 9297 states have (on average 1.229428848015489) internal successors, (11430), 9297 states have internal predecessors, (11430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:35:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 11430 transitions. [2024-11-08 17:35:42,384 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 11430 transitions. Word has length 63 [2024-11-08 17:35:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:35:42,384 INFO L471 AbstractCegarLoop]: Abstraction has 9298 states and 11430 transitions. [2024-11-08 17:35:42,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.9482758620689653) internal successors, (171), 58 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:35:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 11430 transitions. [2024-11-08 17:35:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 17:35:42,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:35:42,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:35:42,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:35:42,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:42,590 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:35:42,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:35:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash -42629395, now seen corresponding path program 1 times [2024-11-08 17:35:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:35:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596547446] [2024-11-08 17:35:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:35:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:35:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:35:43,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596547446] [2024-11-08 17:35:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596547446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:35:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621293468] [2024-11-08 17:35:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:35:43,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:35:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:35:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:44,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 17:35:44,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:35:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:35:47,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:35:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:35:54,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621293468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:35:54,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:35:54,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 21] total 55 [2024-11-08 17:35:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122809844] [2024-11-08 17:35:54,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:35:54,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 17:35:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:35:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 17:35:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2577, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:35:54,155 INFO L87 Difference]: Start difference. First operand 9298 states and 11430 transitions. Second operand has 55 states, 55 states have (on average 3.1454545454545455) internal successors, (173), 55 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:22,781 INFO L93 Difference]: Finished difference Result 14239 states and 17456 transitions. [2024-11-08 17:36:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-08 17:36:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.1454545454545455) internal successors, (173), 55 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-08 17:36:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:22,823 INFO L225 Difference]: With dead ends: 14239 [2024-11-08 17:36:22,827 INFO L226 Difference]: Without dead ends: 9749 [2024-11-08 17:36:22,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5802 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=3230, Invalid=15676, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 17:36:22,853 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 2598 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:22,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 1555 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:36:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9749 states. [2024-11-08 17:36:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9749 to 6888. [2024-11-08 17:36:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6887 states have (on average 1.2279657325395672) internal successors, (8457), 6887 states have internal predecessors, (8457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 8457 transitions. [2024-11-08 17:36:23,943 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 8457 transitions. Word has length 64 [2024-11-08 17:36:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:23,943 INFO L471 AbstractCegarLoop]: Abstraction has 6888 states and 8457 transitions. [2024-11-08 17:36:23,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.1454545454545455) internal successors, (173), 55 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 8457 transitions. [2024-11-08 17:36:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:36:23,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:23,948 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:23,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:36:24,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:24,153 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:24,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash 824806829, now seen corresponding path program 1 times [2024-11-08 17:36:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814978282] [2024-11-08 17:36:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:24,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814978282] [2024-11-08 17:36:25,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814978282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576461588] [2024-11-08 17:36:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:25,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:25,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:25,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:25,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:36:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:25,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:36:25,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:26,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:28,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576461588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:36:28,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:36:28,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 37 [2024-11-08 17:36:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926620515] [2024-11-08 17:36:28,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:36:28,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-08 17:36:28,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-08 17:36:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:36:28,544 INFO L87 Difference]: Start difference. First operand 6888 states and 8457 transitions. Second operand has 37 states, 37 states have (on average 7.648648648648648) internal successors, (283), 37 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:43,718 INFO L93 Difference]: Finished difference Result 19849 states and 24411 transitions. [2024-11-08 17:36:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-08 17:36:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.648648648648648) internal successors, (283), 37 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 17:36:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:43,743 INFO L225 Difference]: With dead ends: 19849 [2024-11-08 17:36:43,743 INFO L226 Difference]: Without dead ends: 14780 [2024-11-08 17:36:43,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6676 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3802, Invalid=17954, Unknown=0, NotChecked=0, Total=21756 [2024-11-08 17:36:43,755 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 2059 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:43,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 1752 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:36:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14780 states. [2024-11-08 17:36:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14780 to 4896. [2024-11-08 17:36:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4895 states have (on average 1.212461695607763) internal successors, (5935), 4895 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 5935 transitions. [2024-11-08 17:36:44,536 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 5935 transitions. Word has length 103 [2024-11-08 17:36:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:44,536 INFO L471 AbstractCegarLoop]: Abstraction has 4896 states and 5935 transitions. [2024-11-08 17:36:44,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.648648648648648) internal successors, (283), 37 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:36:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 5935 transitions. [2024-11-08 17:36:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:36:44,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:44,541 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:44,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:36:44,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 17:36:44,742 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:44,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash -733843571, now seen corresponding path program 1 times [2024-11-08 17:36:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357445384] [2024-11-08 17:36:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:46,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357445384] [2024-11-08 17:36:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357445384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:46,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755633239] [2024-11-08 17:36:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:46,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:46,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:46,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:46,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:36:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:46,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 17:36:46,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:48,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:36:50,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755633239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:36:50,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:36:50,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 43 [2024-11-08 17:36:50,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266734464] [2024-11-08 17:36:50,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:36:50,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 17:36:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 17:36:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 17:36:50,981 INFO L87 Difference]: Start difference. First operand 4896 states and 5935 transitions. Second operand has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:02,310 INFO L93 Difference]: Finished difference Result 12772 states and 15544 transitions. [2024-11-08 17:37:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-08 17:37:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 17:37:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:02,330 INFO L225 Difference]: With dead ends: 12772 [2024-11-08 17:37:02,330 INFO L226 Difference]: Without dead ends: 9401 [2024-11-08 17:37:02,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3825 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1902, Invalid=11904, Unknown=0, NotChecked=0, Total=13806 [2024-11-08 17:37:02,341 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 1570 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:02,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 2237 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 17:37:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9401 states. [2024-11-08 17:37:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9401 to 7143. [2024-11-08 17:37:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7143 states, 7142 states have (on average 1.1936432371884627) internal successors, (8525), 7142 states have internal predecessors, (8525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 8525 transitions. [2024-11-08 17:37:03,340 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 8525 transitions. Word has length 103 [2024-11-08 17:37:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:03,341 INFO L471 AbstractCegarLoop]: Abstraction has 7143 states and 8525 transitions. [2024-11-08 17:37:03,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 8525 transitions. [2024-11-08 17:37:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:37:03,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:03,344 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:03,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:37:03,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 17:37:03,549 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:03,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1288380790, now seen corresponding path program 1 times [2024-11-08 17:37:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:03,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548206210] [2024-11-08 17:37:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548206210] [2024-11-08 17:37:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548206210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675651531] [2024-11-08 17:37:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:05,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:05,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:37:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:06,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:37:06,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:08,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:13,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675651531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:13,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:13,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 17] total 54 [2024-11-08 17:37:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392334514] [2024-11-08 17:37:13,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:13,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:37:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:37:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2609, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:37:13,591 INFO L87 Difference]: Start difference. First operand 7143 states and 8525 transitions. Second operand has 54 states, 54 states have (on average 5.092592592592593) internal successors, (275), 54 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:33,454 INFO L93 Difference]: Finished difference Result 16089 states and 19324 transitions. [2024-11-08 17:37:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 17:37:33,455 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.092592592592593) internal successors, (275), 54 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 17:37:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:33,472 INFO L225 Difference]: With dead ends: 16089 [2024-11-08 17:37:33,472 INFO L226 Difference]: Without dead ends: 13043 [2024-11-08 17:37:33,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4384 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=3311, Invalid=14245, Unknown=0, NotChecked=0, Total=17556 [2024-11-08 17:37:33,480 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 4811 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:33,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 2504 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 17:37:33,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13043 states. [2024-11-08 17:37:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13043 to 12373. [2024-11-08 17:37:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12373 states, 12372 states have (on average 1.1972195279663758) internal successors, (14812), 12372 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12373 states to 12373 states and 14812 transitions. [2024-11-08 17:37:35,447 INFO L78 Accepts]: Start accepts. Automaton has 12373 states and 14812 transitions. Word has length 104 [2024-11-08 17:37:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:35,448 INFO L471 AbstractCegarLoop]: Abstraction has 12373 states and 14812 transitions. [2024-11-08 17:37:35,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.092592592592593) internal successors, (275), 54 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 12373 states and 14812 transitions. [2024-11-08 17:37:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:37:35,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:35,451 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:35,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:35,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 17:37:35,653 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:35,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1670097374, now seen corresponding path program 1 times [2024-11-08 17:37:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257372989] [2024-11-08 17:37:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:35,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257372989] [2024-11-08 17:37:37,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257372989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038919155] [2024-11-08 17:37:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:37,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:37,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:37,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:37,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:37:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:37,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:37:37,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:40,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:45,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038919155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:45,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:45,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 51 [2024-11-08 17:37:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882865056] [2024-11-08 17:37:45,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:45,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 17:37:45,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:45,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 17:37:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 17:37:45,096 INFO L87 Difference]: Start difference. First operand 12373 states and 14812 transitions. Second operand has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:56,213 INFO L93 Difference]: Finished difference Result 23224 states and 27815 transitions. [2024-11-08 17:37:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 17:37:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 17:37:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:56,226 INFO L225 Difference]: With dead ends: 23224 [2024-11-08 17:37:56,227 INFO L226 Difference]: Without dead ends: 13252 [2024-11-08 17:37:56,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1557, Invalid=7373, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 17:37:56,237 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 1868 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1868 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:56,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1868 Valid, 3175 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 17:37:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13252 states. [2024-11-08 17:37:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13252 to 11468. [2024-11-08 17:37:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 1.1935118165169618) internal successors, (13686), 11467 states have internal predecessors, (13686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 13686 transitions. [2024-11-08 17:37:58,376 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 13686 transitions. Word has length 104 [2024-11-08 17:37:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:58,377 INFO L471 AbstractCegarLoop]: Abstraction has 11468 states and 13686 transitions. [2024-11-08 17:37:58,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.588235294117647) internal successors, (285), 51 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 13686 transitions. [2024-11-08 17:37:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:37:58,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:58,380 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:58,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:37:58,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 17:37:58,581 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:58,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2043145030, now seen corresponding path program 1 times [2024-11-08 17:37:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:58,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927993208] [2024-11-08 17:37:58,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:58,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:38:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:38:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:38:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927993208] [2024-11-08 17:38:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927993208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:38:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904096293] [2024-11-08 17:38:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:01,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:38:01,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:38:01,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:38:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:38:01,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 17:38:01,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:38:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:38:04,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:38:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:38:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904096293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:38:10,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:38:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 66 [2024-11-08 17:38:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005161091] [2024-11-08 17:38:10,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:38:10,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-08 17:38:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:38:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-08 17:38:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=3966, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 17:38:10,581 INFO L87 Difference]: Start difference. First operand 11468 states and 13686 transitions. Second operand has 66 states, 66 states have (on average 4.5) internal successors, (297), 66 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:40:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:40:28,346 INFO L93 Difference]: Finished difference Result 40194 states and 48265 transitions. [2024-11-08 17:40:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2024-11-08 17:40:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.5) internal successors, (297), 66 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 17:40:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:40:28,372 INFO L225 Difference]: With dead ends: 40194 [2024-11-08 17:40:28,372 INFO L226 Difference]: Without dead ends: 31870 [2024-11-08 17:40:28,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40626 ImplicationChecksByTransitivity, 129.8s TimeCoverageRelationStatistics Valid=16441, Invalid=93451, Unknown=0, NotChecked=0, Total=109892 [2024-11-08 17:40:28,383 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 5218 mSDsluCounter, 5859 mSDsCounter, 0 mSdLazyCounter, 5014 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5218 SdHoareTripleChecker+Valid, 6037 SdHoareTripleChecker+Invalid, 5344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:40:28,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5218 Valid, 6037 Invalid, 5344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 5014 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-08 17:40:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31870 states. [2024-11-08 17:40:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31870 to 24043. [2024-11-08 17:40:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24043 states, 24042 states have (on average 1.2004824889776224) internal successors, (28862), 24042 states have internal predecessors, (28862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:40:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24043 states to 24043 states and 28862 transitions. [2024-11-08 17:40:32,461 INFO L78 Accepts]: Start accepts. Automaton has 24043 states and 28862 transitions. Word has length 104 [2024-11-08 17:40:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:40:32,461 INFO L471 AbstractCegarLoop]: Abstraction has 24043 states and 28862 transitions. [2024-11-08 17:40:32,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.5) internal successors, (297), 66 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:40:32,462 INFO L276 IsEmpty]: Start isEmpty. Operand 24043 states and 28862 transitions. [2024-11-08 17:40:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 17:40:32,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:40:32,463 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:40:32,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:40:32,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:32,664 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:40:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:40:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1097542823, now seen corresponding path program 1 times [2024-11-08 17:40:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:40:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608588889] [2024-11-08 17:40:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:40:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:40:34,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608588889] [2024-11-08 17:40:34,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608588889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:40:34,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057359532] [2024-11-08 17:40:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:34,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:34,356 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:34,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:40:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:34,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 17:40:34,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:38,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:40:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057359532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:40:47,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:40:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 24] total 71 [2024-11-08 17:40:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452692872] [2024-11-08 17:40:47,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:40:47,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 17:40:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:40:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 17:40:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=4450, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 17:40:47,052 INFO L87 Difference]: Start difference. First operand 24043 states and 28862 transitions. Second operand has 71 states, 71 states have (on average 4.028169014084507) internal successors, (286), 71 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:03,287 INFO L93 Difference]: Finished difference Result 40150 states and 48304 transitions. [2024-11-08 17:42:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2024-11-08 17:42:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.028169014084507) internal successors, (286), 71 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-08 17:42:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:03,312 INFO L225 Difference]: With dead ends: 40150 [2024-11-08 17:42:03,312 INFO L226 Difference]: Without dead ends: 30564 [2024-11-08 17:42:03,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16753 ImplicationChecksByTransitivity, 72.1s TimeCoverageRelationStatistics Valid=7481, Invalid=42025, Unknown=0, NotChecked=0, Total=49506 [2024-11-08 17:42:03,321 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 5637 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:03,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5637 Valid, 4325 Invalid, 3413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 17:42:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30564 states. [2024-11-08 17:42:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30564 to 24586. [2024-11-08 17:42:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24586 states, 24585 states have (on average 1.1995932479153957) internal successors, (29492), 24585 states have internal predecessors, (29492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24586 states to 24586 states and 29492 transitions. [2024-11-08 17:42:07,614 INFO L78 Accepts]: Start accepts. Automaton has 24586 states and 29492 transitions. Word has length 105 [2024-11-08 17:42:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:07,614 INFO L471 AbstractCegarLoop]: Abstraction has 24586 states and 29492 transitions. [2024-11-08 17:42:07,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.028169014084507) internal successors, (286), 71 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 24586 states and 29492 transitions. [2024-11-08 17:42:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 17:42:07,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:07,616 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:07,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:07,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 17:42:07,817 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:07,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1654376619, now seen corresponding path program 1 times [2024-11-08 17:42:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:42:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62017391] [2024-11-08 17:42:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:42:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:42:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62017391] [2024-11-08 17:42:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62017391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:42:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982142067] [2024-11-08 17:42:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:09,270 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:09,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:42:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:09,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 17:42:09,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:12,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:42:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982142067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:42:14,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:42:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 54 [2024-11-08 17:42:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886797587] [2024-11-08 17:42:14,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:42:14,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 17:42:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:42:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 17:42:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=2643, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:42:14,962 INFO L87 Difference]: Start difference. First operand 24586 states and 29492 transitions. Second operand has 54 states, 54 states have (on average 5.462962962962963) internal successors, (295), 54 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:41,252 INFO L93 Difference]: Finished difference Result 32117 states and 38584 transitions. [2024-11-08 17:42:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-08 17:42:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.462962962962963) internal successors, (295), 54 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-08 17:42:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:41,277 INFO L225 Difference]: With dead ends: 32117 [2024-11-08 17:42:41,277 INFO L226 Difference]: Without dead ends: 23764 [2024-11-08 17:42:41,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6614 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=4247, Invalid=20559, Unknown=0, NotChecked=0, Total=24806 [2024-11-08 17:42:41,286 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 4094 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:41,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 2883 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 17:42:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23764 states. [2024-11-08 17:42:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23764 to 22966. [2024-11-08 17:42:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22966 states, 22965 states have (on average 1.2009144350097976) internal successors, (27579), 22965 states have internal predecessors, (27579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22966 states to 22966 states and 27579 transitions. [2024-11-08 17:42:46,549 INFO L78 Accepts]: Start accepts. Automaton has 22966 states and 27579 transitions. Word has length 105 [2024-11-08 17:42:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:46,549 INFO L471 AbstractCegarLoop]: Abstraction has 22966 states and 27579 transitions. [2024-11-08 17:42:46,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.462962962962963) internal successors, (295), 54 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22966 states and 27579 transitions. [2024-11-08 17:42:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:42:46,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:46,551 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:46,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:46,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:42:46,752 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:46,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 481388586, now seen corresponding path program 1 times [2024-11-08 17:42:46,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:42:46,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752822261] [2024-11-08 17:42:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:42:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:42:47,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752822261] [2024-11-08 17:42:47,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752822261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:42:47,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768633196] [2024-11-08 17:42:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:47,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:47,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:47,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:47,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:42:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:47,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:42:47,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:49,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:42:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:42:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768633196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:42:50,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:42:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 34 [2024-11-08 17:42:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333047972] [2024-11-08 17:42:50,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:42:50,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 17:42:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:42:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 17:42:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=976, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 17:42:50,726 INFO L87 Difference]: Start difference. First operand 22966 states and 27579 transitions. Second operand has 34 states, 34 states have (on average 8.0) internal successors, (272), 34 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:42:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:57,444 INFO L93 Difference]: Finished difference Result 47845 states and 57887 transitions. [2024-11-08 17:42:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 17:42:57,445 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.0) internal successors, (272), 34 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-08 17:42:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:57,465 INFO L225 Difference]: With dead ends: 47845 [2024-11-08 17:42:57,465 INFO L226 Difference]: Without dead ends: 26512 [2024-11-08 17:42:57,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=724, Invalid=2468, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:42:57,472 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 753 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:57,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1122 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:42:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26512 states. [2024-11-08 17:43:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26512 to 20410. [2024-11-08 17:43:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20410 states, 20409 states have (on average 1.1989318437944045) internal successors, (24469), 20409 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:43:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20410 states to 20410 states and 24469 transitions. [2024-11-08 17:43:01,538 INFO L78 Accepts]: Start accepts. Automaton has 20410 states and 24469 transitions. Word has length 106 [2024-11-08 17:43:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:01,538 INFO L471 AbstractCegarLoop]: Abstraction has 20410 states and 24469 transitions. [2024-11-08 17:43:01,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.0) internal successors, (272), 34 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:43:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20410 states and 24469 transitions. [2024-11-08 17:43:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:43:01,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:01,540 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:01,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:43:01,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 17:43:01,740 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:01,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -468092146, now seen corresponding path program 1 times [2024-11-08 17:43:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:43:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337692836] [2024-11-08 17:43:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:43:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:02,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:43:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337692836] [2024-11-08 17:43:02,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337692836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:43:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433359931] [2024-11-08 17:43:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:02,373 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:43:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:02,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:43:02,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:03,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:43:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:05,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433359931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:43:05,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:43:05,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 36 [2024-11-08 17:43:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167179532] [2024-11-08 17:43:05,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:43:05,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 17:43:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:43:05,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 17:43:05,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 17:43:05,485 INFO L87 Difference]: Start difference. First operand 20410 states and 24469 transitions. Second operand has 36 states, 36 states have (on average 7.361111111111111) internal successors, (265), 36 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:43:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:43:11,728 INFO L93 Difference]: Finished difference Result 46966 states and 56665 transitions. [2024-11-08 17:43:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:43:11,729 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.361111111111111) internal successors, (265), 36 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-08 17:43:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:43:11,752 INFO L225 Difference]: With dead ends: 46966 [2024-11-08 17:43:11,752 INFO L226 Difference]: Without dead ends: 28067 [2024-11-08 17:43:11,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=675, Invalid=2295, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:43:11,762 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 646 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:43:11,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 886 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:43:11,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28067 states. [2024-11-08 17:43:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28067 to 26923. [2024-11-08 17:43:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26923 states, 26922 states have (on average 1.1932620161949334) internal successors, (32125), 26922 states have internal predecessors, (32125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:43:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26923 states to 26923 states and 32125 transitions. [2024-11-08 17:43:17,396 INFO L78 Accepts]: Start accepts. Automaton has 26923 states and 32125 transitions. Word has length 106 [2024-11-08 17:43:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:17,396 INFO L471 AbstractCegarLoop]: Abstraction has 26923 states and 32125 transitions. [2024-11-08 17:43:17,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.361111111111111) internal successors, (265), 36 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:43:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 26923 states and 32125 transitions. [2024-11-08 17:43:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:43:17,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:17,398 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:17,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:43:17,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 17:43:17,598 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:17,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:17,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1693243471, now seen corresponding path program 1 times [2024-11-08 17:43:17,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:43:17,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918814364] [2024-11-08 17:43:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:17,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:43:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:43:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918814364] [2024-11-08 17:43:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918814364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:43:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490751158] [2024-11-08 17:43:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:19,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:19,791 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:19,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:43:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:19,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 17:43:19,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 36 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:23,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:43:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:43:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490751158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:43:35,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:43:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 26] total 72 [2024-11-08 17:43:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479448355] [2024-11-08 17:43:35,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:43:35,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-08 17:43:35,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:43:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-08 17:43:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=4587, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 17:43:35,216 INFO L87 Difference]: Start difference. First operand 26923 states and 32125 transitions. Second operand has 72 states, 72 states have (on average 4.125) internal successors, (297), 72 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:45:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:45:20,379 INFO L93 Difference]: Finished difference Result 68049 states and 81137 transitions. [2024-11-08 17:45:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2024-11-08 17:45:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.125) internal successors, (297), 72 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-08 17:45:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:45:20,434 INFO L225 Difference]: With dead ends: 68049 [2024-11-08 17:45:20,434 INFO L226 Difference]: Without dead ends: 48021 [2024-11-08 17:45:20,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34987 ImplicationChecksByTransitivity, 94.9s TimeCoverageRelationStatistics Valid=14003, Invalid=79939, Unknown=0, NotChecked=0, Total=93942 [2024-11-08 17:45:20,453 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 5732 mSDsluCounter, 5876 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5732 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:45:20,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5732 Valid, 6088 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 17:45:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48021 states. [2024-11-08 17:45:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48021 to 28655. [2024-11-08 17:45:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28655 states, 28654 states have (on average 1.1924687652683743) internal successors, (34169), 28654 states have internal predecessors, (34169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:45:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28655 states to 28655 states and 34169 transitions. [2024-11-08 17:45:26,857 INFO L78 Accepts]: Start accepts. Automaton has 28655 states and 34169 transitions. Word has length 107 [2024-11-08 17:45:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:45:26,858 INFO L471 AbstractCegarLoop]: Abstraction has 28655 states and 34169 transitions. [2024-11-08 17:45:26,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.125) internal successors, (297), 72 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:45:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 28655 states and 34169 transitions. [2024-11-08 17:45:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:45:26,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:45:26,860 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:45:26,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:27,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:27,061 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:45:27,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -535064467, now seen corresponding path program 1 times [2024-11-08 17:45:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:45:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862641046] [2024-11-08 17:45:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:27,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:45:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:45:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862641046] [2024-11-08 17:45:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862641046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:45:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724742572] [2024-11-08 17:45:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:29,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:29,190 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:29,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:45:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:29,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 17:45:29,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:33,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724742572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:45:41,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:45:41,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 26] total 76 [2024-11-08 17:45:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023131543] [2024-11-08 17:45:41,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 17:45:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:45:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 17:45:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=5259, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 17:45:41,273 INFO L87 Difference]: Start difference. First operand 28655 states and 34169 transitions. Second operand has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 76 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:11,475 INFO L93 Difference]: Finished difference Result 50761 states and 60484 transitions. [2024-11-08 17:47:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2024-11-08 17:47:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 76 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-08 17:47:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:11,509 INFO L225 Difference]: With dead ends: 50761 [2024-11-08 17:47:11,509 INFO L226 Difference]: Without dead ends: 39133 [2024-11-08 17:47:11,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31486 ImplicationChecksByTransitivity, 80.0s TimeCoverageRelationStatistics Valid=14834, Invalid=70722, Unknown=0, NotChecked=0, Total=85556 [2024-11-08 17:47:11,522 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 5768 mSDsluCounter, 5164 mSDsCounter, 0 mSdLazyCounter, 5855 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5768 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 6186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 5855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:11,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5768 Valid, 5314 Invalid, 6186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 5855 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-08 17:47:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39133 states. [2024-11-08 17:47:18,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39133 to 29239. [2024-11-08 17:47:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29239 states, 29238 states have (on average 1.1922156098228334) internal successors, (34858), 29238 states have internal predecessors, (34858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29239 states to 29239 states and 34858 transitions. [2024-11-08 17:47:18,072 INFO L78 Accepts]: Start accepts. Automaton has 29239 states and 34858 transitions. Word has length 107 [2024-11-08 17:47:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:18,073 INFO L471 AbstractCegarLoop]: Abstraction has 29239 states and 34858 transitions. [2024-11-08 17:47:18,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.776315789473684) internal successors, (287), 76 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29239 states and 34858 transitions. [2024-11-08 17:47:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 17:47:18,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:18,077 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:18,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:47:18,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:18,278 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:18,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -515102266, now seen corresponding path program 1 times [2024-11-08 17:47:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565154688] [2024-11-08 17:47:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:18,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 147 proven. 55 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 17:47:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565154688] [2024-11-08 17:47:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565154688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398485381] [2024-11-08 17:47:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:19,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:19,807 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:19,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10382661-d9e3-44d8-9743-9229a7de7e52/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:47:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:20,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 17:47:20,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 71 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:24,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 69 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:32,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398485381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:32,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:32,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 28] total 74 [2024-11-08 17:47:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473713686] [2024-11-08 17:47:32,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:32,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-08 17:47:32,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-08 17:47:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=4869, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 17:47:32,621 INFO L87 Difference]: Start difference. First operand 29239 states and 34858 transitions. Second operand has 75 states, 75 states have (on average 4.906666666666666) internal successors, (368), 74 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)