./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya --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 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:28:38,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:28:39,019 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:28:39,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:28:39,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:28:39,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:28:39,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:28:39,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:28:39,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:28:39,048 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:28:39,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:28:39,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:28:39,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:28:39,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:28:39,051 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:28:39,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:28:39,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:28:39,052 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:28:39,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:28:39,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:28:39,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:28:39,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:28:39,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:28:39,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:28:39,056 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:28:39,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:28:39,057 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:28:39,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:28:39,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:28:39,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:28:39,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:28:39,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:28:39,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:28:39,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:28:39,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:28:39,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:28:39,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:28:39,061 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_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 [2023-11-29 04:28:39,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:28:39,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:28:39,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:28:39,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:28:39,322 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:28:39,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 04:28:42,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:28:42,327 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:28:42,328 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 04:28:42,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/data/6abdaab57/e0d6a819137f461687762be160111c4b/FLAGd6a1083a7 [2023-11-29 04:28:42,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/data/6abdaab57/e0d6a819137f461687762be160111c4b [2023-11-29 04:28:42,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:28:42,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:28:42,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:28:42,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:28:42,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:28:42,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edbbde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42, skipping insertion in model container [2023-11-29 04:28:42,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:28:42,597 WARN L240 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_463d3ce8-df7e-4819-bc83-0056e19c1a71/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2023-11-29 04:28:42,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:28:42,648 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:28:42,699 WARN L240 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_463d3ce8-df7e-4819-bc83-0056e19c1a71/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2023-11-29 04:28:42,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:28:42,739 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:28:42,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42 WrapperNode [2023-11-29 04:28:42,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:28:42,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:28:42,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:28:42,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:28:42,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,806 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 607 [2023-11-29 04:28:42,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:28:42,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:28:42,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:28:42,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:28:42,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,837 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]. [2023-11-29 04:28:42,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:28:42,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:28:42,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:28:42,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:28:42,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (1/1) ... [2023-11-29 04:28:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:28:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:42,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:28:42,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:28:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:28:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:28:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:28:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:28:43,057 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:28:43,059 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:28:43,573 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:28:43,616 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:28:43,616 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:28:43,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:28:43 BoogieIcfgContainer [2023-11-29 04:28:43,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:28:43,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:28:43,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:28:43,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:28:43,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:28:42" (1/3) ... [2023-11-29 04:28:43,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19649d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:28:43, skipping insertion in model container [2023-11-29 04:28:43,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:28:42" (2/3) ... [2023-11-29 04:28:43,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19649d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:28:43, skipping insertion in model container [2023-11-29 04:28:43,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:28:43" (3/3) ... [2023-11-29 04:28:43,627 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-11-29 04:28:43,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:28:43,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:28:43,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:28:43,710 INFO L357 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, mHoare=true, 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;@6563bd6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:28:43,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:28:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 137 states have internal predecessors, (229), 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) [2023-11-29 04:28:43,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 04:28:43,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:43,726 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:43,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:43,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:43,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1826198016, now seen corresponding path program 1 times [2023-11-29 04:28:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:43,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493439308] [2023-11-29 04:28:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493439308] [2023-11-29 04:28:44,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493439308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:44,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100417643] [2023-11-29 04:28:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:44,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:44,167 INFO L87 Difference]: Start difference. First operand has 138 states, 130 states have (on average 1.7615384615384615) internal successors, (229), 137 states have internal predecessors, (229), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-29 04:28:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:44,267 INFO L93 Difference]: Finished difference Result 309 states and 496 transitions. [2023-11-29 04:28:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:44,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-11-29 04:28:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:44,284 INFO L225 Difference]: With dead ends: 309 [2023-11-29 04:28:44,284 INFO L226 Difference]: Without dead ends: 203 [2023-11-29 04:28:44,288 INFO L412 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 [2023-11-29 04:28:44,292 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 131 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:44,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 398 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:28:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-29 04:28:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2023-11-29 04:28:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.5477386934673367) internal successors, (308), 199 states have internal predecessors, (308), 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) [2023-11-29 04:28:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 308 transitions. [2023-11-29 04:28:44,345 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 308 transitions. Word has length 49 [2023-11-29 04:28:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:44,346 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 308 transitions. [2023-11-29 04:28:44,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-29 04:28:44,347 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 308 transitions. [2023-11-29 04:28:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:28:44,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:44,350 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:28:44,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:44,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash -383663571, now seen corresponding path program 1 times [2023-11-29 04:28:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803447668] [2023-11-29 04:28:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:44,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:44,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:44,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803447668] [2023-11-29 04:28:44,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803447668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:44,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:44,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182672528] [2023-11-29 04:28:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:44,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:44,487 INFO L87 Difference]: Start difference. First operand 200 states and 308 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-11-29 04:28:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:44,527 INFO L93 Difference]: Finished difference Result 492 states and 768 transitions. [2023-11-29 04:28:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-11-29 04:28:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:44,531 INFO L225 Difference]: With dead ends: 492 [2023-11-29 04:28:44,532 INFO L226 Difference]: Without dead ends: 339 [2023-11-29 04:28:44,533 INFO L412 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 [2023-11-29 04:28:44,535 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:44,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 367 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-29 04:28:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2023-11-29 04:28:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.5508982035928143) internal successors, (518), 334 states have internal predecessors, (518), 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) [2023-11-29 04:28:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 518 transitions. [2023-11-29 04:28:44,559 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 518 transitions. Word has length 51 [2023-11-29 04:28:44,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:44,559 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 518 transitions. [2023-11-29 04:28:44,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-11-29 04:28:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 518 transitions. [2023-11-29 04:28:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:28:44,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:44,563 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:44,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:28:44,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:44,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -931161248, now seen corresponding path program 1 times [2023-11-29 04:28:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925829162] [2023-11-29 04:28:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:44,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925829162] [2023-11-29 04:28:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925829162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966874743] [2023-11-29 04:28:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:44,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:44,665 INFO L87 Difference]: Start difference. First operand 335 states and 518 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-29 04:28:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:44,695 INFO L93 Difference]: Finished difference Result 883 states and 1372 transitions. [2023-11-29 04:28:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 [2023-11-29 04:28:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:44,699 INFO L225 Difference]: With dead ends: 883 [2023-11-29 04:28:44,699 INFO L226 Difference]: Without dead ends: 595 [2023-11-29 04:28:44,702 INFO L412 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 [2023-11-29 04:28:44,703 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:44,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-11-29 04:28:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 589. [2023-11-29 04:28:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.5408163265306123) internal successors, (906), 588 states have internal predecessors, (906), 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) [2023-11-29 04:28:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 906 transitions. [2023-11-29 04:28:44,726 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 906 transitions. Word has length 53 [2023-11-29 04:28:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:44,727 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 906 transitions. [2023-11-29 04:28:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-11-29 04:28:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 906 transitions. [2023-11-29 04:28:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:28:44,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:44,730 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:28:44,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:44,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 648932685, now seen corresponding path program 1 times [2023-11-29 04:28:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945738127] [2023-11-29 04:28:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945738127] [2023-11-29 04:28:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945738127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:28:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266578440] [2023-11-29 04:28:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:44,860 INFO L87 Difference]: Start difference. First operand 589 states and 906 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2023-11-29 04:28:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:45,044 INFO L93 Difference]: Finished difference Result 2559 states and 4012 transitions. [2023-11-29 04:28:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:28:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 [2023-11-29 04:28:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:45,056 INFO L225 Difference]: With dead ends: 2559 [2023-11-29 04:28:45,056 INFO L226 Difference]: Without dead ends: 2007 [2023-11-29 04:28:45,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:28:45,059 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 802 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:45,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1245 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:28:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2023-11-29 04:28:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1042. [2023-11-29 04:28:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1041 states have (on average 1.559077809798271) internal successors, (1623), 1041 states have internal predecessors, (1623), 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) [2023-11-29 04:28:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1623 transitions. [2023-11-29 04:28:45,094 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1623 transitions. Word has length 55 [2023-11-29 04:28:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,095 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1623 transitions. [2023-11-29 04:28:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2023-11-29 04:28:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1623 transitions. [2023-11-29 04:28:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 04:28:45,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,097 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:28:45,098 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:45,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1420427451, now seen corresponding path program 1 times [2023-11-29 04:28:45,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832169337] [2023-11-29 04:28:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:45,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832169337] [2023-11-29 04:28:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832169337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:45,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:45,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:28:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865319103] [2023-11-29 04:28:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:45,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:28:45,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:28:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:28:45,193 INFO L87 Difference]: Start difference. First operand 1042 states and 1623 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-29 04:28:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:45,260 INFO L93 Difference]: Finished difference Result 3051 states and 4795 transitions. [2023-11-29 04:28:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:28:45,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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 [2023-11-29 04:28:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:45,275 INFO L225 Difference]: With dead ends: 3051 [2023-11-29 04:28:45,275 INFO L226 Difference]: Without dead ends: 2056 [2023-11-29 04:28:45,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:45,278 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 378 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:45,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 596 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-11-29 04:28:45,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1537. [2023-11-29 04:28:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 1.5611979166666667) internal successors, (2398), 1536 states have internal predecessors, (2398), 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) [2023-11-29 04:28:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2398 transitions. [2023-11-29 04:28:45,327 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2398 transitions. Word has length 56 [2023-11-29 04:28:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,327 INFO L495 AbstractCegarLoop]: Abstraction has 1537 states and 2398 transitions. [2023-11-29 04:28:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 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) [2023-11-29 04:28:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2398 transitions. [2023-11-29 04:28:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:28:45,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,330 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:28:45,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:45,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash 168542636, now seen corresponding path program 1 times [2023-11-29 04:28:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266555088] [2023-11-29 04:28:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:45,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266555088] [2023-11-29 04:28:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266555088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:45,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407821206] [2023-11-29 04:28:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:45,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:45,397 INFO L87 Difference]: Start difference. First operand 1537 states and 2398 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) [2023-11-29 04:28:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:45,429 INFO L93 Difference]: Finished difference Result 3013 states and 4717 transitions. [2023-11-29 04:28:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:45,430 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 [2023-11-29 04:28:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:45,443 INFO L225 Difference]: With dead ends: 3013 [2023-11-29 04:28:45,443 INFO L226 Difference]: Without dead ends: 2161 [2023-11-29 04:28:45,445 INFO L412 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 [2023-11-29 04:28:45,446 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 109 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:45,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 426 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-11-29 04:28:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2159. [2023-11-29 04:28:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2158 states have (on average 1.5528266913809083) internal successors, (3351), 2158 states have internal predecessors, (3351), 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) [2023-11-29 04:28:45,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3351 transitions. [2023-11-29 04:28:45,501 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3351 transitions. Word has length 58 [2023-11-29 04:28:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,502 INFO L495 AbstractCegarLoop]: Abstraction has 2159 states and 3351 transitions. [2023-11-29 04:28:45,502 INFO L496 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) [2023-11-29 04:28:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3351 transitions. [2023-11-29 04:28:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:28:45,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,503 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:28:45,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:45,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2133566557, now seen corresponding path program 1 times [2023-11-29 04:28:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374236424] [2023-11-29 04:28:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374236424] [2023-11-29 04:28:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374236424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:45,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525108772] [2023-11-29 04:28:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:45,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:45,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:45,564 INFO L87 Difference]: Start difference. First operand 2159 states and 3351 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) [2023-11-29 04:28:45,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:45,602 INFO L93 Difference]: Finished difference Result 4175 states and 6503 transitions. [2023-11-29 04:28:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:45,602 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 [2023-11-29 04:28:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:45,619 INFO L225 Difference]: With dead ends: 4175 [2023-11-29 04:28:45,619 INFO L226 Difference]: Without dead ends: 3002 [2023-11-29 04:28:45,621 INFO L412 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 [2023-11-29 04:28:45,622 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 104 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:45,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2023-11-29 04:28:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 3000. [2023-11-29 04:28:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2999 states have (on average 1.5428476158719573) internal successors, (4627), 2999 states have internal predecessors, (4627), 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) [2023-11-29 04:28:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 4627 transitions. [2023-11-29 04:28:45,719 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 4627 transitions. Word has length 58 [2023-11-29 04:28:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,720 INFO L495 AbstractCegarLoop]: Abstraction has 3000 states and 4627 transitions. [2023-11-29 04:28:45,720 INFO L496 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) [2023-11-29 04:28:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 4627 transitions. [2023-11-29 04:28:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:28:45,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,721 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:28:45,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:45,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash 24148835, now seen corresponding path program 1 times [2023-11-29 04:28:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811686791] [2023-11-29 04:28:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:45,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811686791] [2023-11-29 04:28:45,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811686791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:45,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:45,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397263306] [2023-11-29 04:28:45,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:45,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:45,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:45,779 INFO L87 Difference]: Start difference. First operand 3000 states and 4627 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) [2023-11-29 04:28:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:45,827 INFO L93 Difference]: Finished difference Result 6422 states and 9932 transitions. [2023-11-29 04:28:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:45,828 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 [2023-11-29 04:28:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:45,852 INFO L225 Difference]: With dead ends: 6422 [2023-11-29 04:28:45,853 INFO L226 Difference]: Without dead ends: 4299 [2023-11-29 04:28:45,856 INFO L412 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 [2023-11-29 04:28:45,857 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:45,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 455 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2023-11-29 04:28:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4297. [2023-11-29 04:28:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 4296 states have (on average 1.5293296089385475) internal successors, (6570), 4296 states have internal predecessors, (6570), 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) [2023-11-29 04:28:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 6570 transitions. [2023-11-29 04:28:45,966 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 6570 transitions. Word has length 58 [2023-11-29 04:28:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,966 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 6570 transitions. [2023-11-29 04:28:45,966 INFO L496 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) [2023-11-29 04:28:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 6570 transitions. [2023-11-29 04:28:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 04:28:45,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,967 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:28:45,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:45,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -32918918, now seen corresponding path program 1 times [2023-11-29 04:28:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077861568] [2023-11-29 04:28:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:46,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077861568] [2023-11-29 04:28:46,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077861568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:46,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:46,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:28:46,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770264483] [2023-11-29 04:28:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:46,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:46,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:46,186 INFO L87 Difference]: Start difference. First operand 4297 states and 6570 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2023-11-29 04:28:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:46,261 INFO L93 Difference]: Finished difference Result 7202 states and 10929 transitions. [2023-11-29 04:28:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:28:46,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 [2023-11-29 04:28:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:46,299 INFO L225 Difference]: With dead ends: 7202 [2023-11-29 04:28:46,299 INFO L226 Difference]: Without dead ends: 7200 [2023-11-29 04:28:46,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:28:46,302 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 242 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:46,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 926 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2023-11-29 04:28:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 4401. [2023-11-29 04:28:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4400 states have (on average 1.5106818181818182) internal successors, (6647), 4400 states have internal predecessors, (6647), 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) [2023-11-29 04:28:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 6647 transitions. [2023-11-29 04:28:46,440 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 6647 transitions. Word has length 64 [2023-11-29 04:28:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:46,441 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 6647 transitions. [2023-11-29 04:28:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2023-11-29 04:28:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 6647 transitions. [2023-11-29 04:28:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:28:46,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:46,443 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:28:46,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:46,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash -120193138, now seen corresponding path program 1 times [2023-11-29 04:28:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278506206] [2023-11-29 04:28:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:28:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278506206] [2023-11-29 04:28:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278506206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:46,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:28:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589248606] [2023-11-29 04:28:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:46,582 INFO L87 Difference]: Start difference. First operand 4401 states and 6647 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-29 04:28:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:46,706 INFO L93 Difference]: Finished difference Result 12767 states and 19346 transitions. [2023-11-29 04:28:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:28:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 86 [2023-11-29 04:28:46,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:46,742 INFO L225 Difference]: With dead ends: 12767 [2023-11-29 04:28:46,742 INFO L226 Difference]: Without dead ends: 9829 [2023-11-29 04:28:46,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:28:46,749 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 478 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:46,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 885 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:46,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2023-11-29 04:28:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 7086. [2023-11-29 04:28:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7086 states, 7085 states have (on average 1.5092448835568102) internal successors, (10693), 7085 states have internal predecessors, (10693), 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) [2023-11-29 04:28:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10693 transitions. [2023-11-29 04:28:46,963 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10693 transitions. Word has length 86 [2023-11-29 04:28:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:46,964 INFO L495 AbstractCegarLoop]: Abstraction has 7086 states and 10693 transitions. [2023-11-29 04:28:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-29 04:28:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10693 transitions. [2023-11-29 04:28:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:28:46,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:46,967 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:28:46,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:46,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1844830783, now seen corresponding path program 1 times [2023-11-29 04:28:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957154095] [2023-11-29 04:28:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:28:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957154095] [2023-11-29 04:28:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957154095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:47,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:47,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:28:47,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981094949] [2023-11-29 04:28:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:47,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:47,119 INFO L87 Difference]: Start difference. First operand 7086 states and 10693 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-29 04:28:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:47,231 INFO L93 Difference]: Finished difference Result 14379 states and 21789 transitions. [2023-11-29 04:28:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:28:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 86 [2023-11-29 04:28:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:47,248 INFO L225 Difference]: With dead ends: 14379 [2023-11-29 04:28:47,248 INFO L226 Difference]: Without dead ends: 11441 [2023-11-29 04:28:47,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:28:47,255 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 484 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:47,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 881 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11441 states. [2023-11-29 04:28:47,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11441 to 10634. [2023-11-29 04:28:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10634 states, 10633 states have (on average 1.5087933791027932) internal successors, (16043), 10633 states have internal predecessors, (16043), 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) [2023-11-29 04:28:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10634 states to 10634 states and 16043 transitions. [2023-11-29 04:28:47,403 INFO L78 Accepts]: Start accepts. Automaton has 10634 states and 16043 transitions. Word has length 86 [2023-11-29 04:28:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:47,403 INFO L495 AbstractCegarLoop]: Abstraction has 10634 states and 16043 transitions. [2023-11-29 04:28:47,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-11-29 04:28:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10634 states and 16043 transitions. [2023-11-29 04:28:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:28:47,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:47,405 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:47,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:28:47,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:47,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash -264586939, now seen corresponding path program 1 times [2023-11-29 04:28:47,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:47,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748462784] [2023-11-29 04:28:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:28:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748462784] [2023-11-29 04:28:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748462784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:28:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214040313] [2023-11-29 04:28:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:47,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:47,563 INFO L87 Difference]: Start difference. First operand 10634 states and 16043 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 04:28:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:47,673 INFO L93 Difference]: Finished difference Result 14900 states and 22595 transitions. [2023-11-29 04:28:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:28:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2023-11-29 04:28:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:47,692 INFO L225 Difference]: With dead ends: 14900 [2023-11-29 04:28:47,692 INFO L226 Difference]: Without dead ends: 13056 [2023-11-29 04:28:47,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:28:47,698 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 474 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:47,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 980 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2023-11-29 04:28:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 12258. [2023-11-29 04:28:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12258 states, 12257 states have (on average 1.5110549073998532) internal successors, (18521), 12257 states have internal predecessors, (18521), 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) [2023-11-29 04:28:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12258 states to 12258 states and 18521 transitions. [2023-11-29 04:28:47,918 INFO L78 Accepts]: Start accepts. Automaton has 12258 states and 18521 transitions. Word has length 86 [2023-11-29 04:28:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:47,918 INFO L495 AbstractCegarLoop]: Abstraction has 12258 states and 18521 transitions. [2023-11-29 04:28:47,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 04:28:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12258 states and 18521 transitions. [2023-11-29 04:28:47,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:28:47,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:47,920 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:28:47,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:47,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -908860859, now seen corresponding path program 1 times [2023-11-29 04:28:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878081189] [2023-11-29 04:28:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:28:47,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:47,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878081189] [2023-11-29 04:28:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878081189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678076380] [2023-11-29 04:28:47,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:47,980 INFO L87 Difference]: Start difference. First operand 12258 states and 18521 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-29 04:28:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:48,117 INFO L93 Difference]: Finished difference Result 26504 states and 40223 transitions. [2023-11-29 04:28:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:48,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2023-11-29 04:28:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:48,144 INFO L225 Difference]: With dead ends: 26504 [2023-11-29 04:28:48,144 INFO L226 Difference]: Without dead ends: 19699 [2023-11-29 04:28:48,151 INFO L412 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 [2023-11-29 04:28:48,152 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 95 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:48,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 353 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19699 states. [2023-11-29 04:28:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19699 to 19647. [2023-11-29 04:28:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19647 states, 19646 states have (on average 1.512267128168584) internal successors, (29710), 19646 states have internal predecessors, (29710), 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) [2023-11-29 04:28:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19647 states to 19647 states and 29710 transitions. [2023-11-29 04:28:48,457 INFO L78 Accepts]: Start accepts. Automaton has 19647 states and 29710 transitions. Word has length 87 [2023-11-29 04:28:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:48,457 INFO L495 AbstractCegarLoop]: Abstraction has 19647 states and 29710 transitions. [2023-11-29 04:28:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-29 04:28:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19647 states and 29710 transitions. [2023-11-29 04:28:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 04:28:48,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:48,460 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:48,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:28:48,460 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash 325235277, now seen corresponding path program 1 times [2023-11-29 04:28:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301554401] [2023-11-29 04:28:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:48,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:28:48,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:48,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301554401] [2023-11-29 04:28:48,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301554401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:48,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:48,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:28:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605873862] [2023-11-29 04:28:48,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:48,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:28:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:28:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:28:48,564 INFO L87 Difference]: Start difference. First operand 19647 states and 29710 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2023-11-29 04:28:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:48,777 INFO L93 Difference]: Finished difference Result 33333 states and 50590 transitions. [2023-11-29 04:28:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:28:48,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2023-11-29 04:28:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:48,818 INFO L225 Difference]: With dead ends: 33333 [2023-11-29 04:28:48,818 INFO L226 Difference]: Without dead ends: 26416 [2023-11-29 04:28:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:28:48,829 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 215 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:48,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 632 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26416 states. [2023-11-29 04:28:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26416 to 24851. [2023-11-29 04:28:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24851 states, 24850 states have (on average 1.5098993963782696) internal successors, (37521), 24850 states have internal predecessors, (37521), 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) [2023-11-29 04:28:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24851 states to 24851 states and 37521 transitions. [2023-11-29 04:28:49,244 INFO L78 Accepts]: Start accepts. Automaton has 24851 states and 37521 transitions. Word has length 87 [2023-11-29 04:28:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:49,244 INFO L495 AbstractCegarLoop]: Abstraction has 24851 states and 37521 transitions. [2023-11-29 04:28:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2023-11-29 04:28:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24851 states and 37521 transitions. [2023-11-29 04:28:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 04:28:49,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:49,247 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:49,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:28:49,248 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:49,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1784797969, now seen corresponding path program 1 times [2023-11-29 04:28:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004576953] [2023-11-29 04:28:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004576953] [2023-11-29 04:28:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004576953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882456554] [2023-11-29 04:28:49,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:49,380 INFO L87 Difference]: Start difference. First operand 24851 states and 37521 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2023-11-29 04:28:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:49,699 INFO L93 Difference]: Finished difference Result 72980 states and 110090 transitions. [2023-11-29 04:28:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:49,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) Word has length 88 [2023-11-29 04:28:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:49,783 INFO L225 Difference]: With dead ends: 72980 [2023-11-29 04:28:49,783 INFO L226 Difference]: Without dead ends: 48203 [2023-11-29 04:28:49,810 INFO L412 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 [2023-11-29 04:28:49,811 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 146 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 469 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:49,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48203 states. [2023-11-29 04:28:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48203 to 48201. [2023-11-29 04:28:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48201 states, 48200 states have (on average 1.4963485477178424) internal successors, (72124), 48200 states have internal predecessors, (72124), 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) [2023-11-29 04:28:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48201 states to 48201 states and 72124 transitions. [2023-11-29 04:28:50,516 INFO L78 Accepts]: Start accepts. Automaton has 48201 states and 72124 transitions. Word has length 88 [2023-11-29 04:28:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:50,516 INFO L495 AbstractCegarLoop]: Abstraction has 48201 states and 72124 transitions. [2023-11-29 04:28:50,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2023-11-29 04:28:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 48201 states and 72124 transitions. [2023-11-29 04:28:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 04:28:50,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:50,520 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:50,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:28:50,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash -266873061, now seen corresponding path program 1 times [2023-11-29 04:28:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750460017] [2023-11-29 04:28:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:50,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:50,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750460017] [2023-11-29 04:28:50,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750460017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:50,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:50,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:50,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042493236] [2023-11-29 04:28:50,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:50,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:50,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:50,669 INFO L87 Difference]: Start difference. First operand 48201 states and 72124 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2023-11-29 04:28:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:51,121 INFO L93 Difference]: Finished difference Result 141479 states and 211460 transitions. [2023-11-29 04:28:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:51,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) Word has length 88 [2023-11-29 04:28:51,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:51,279 INFO L225 Difference]: With dead ends: 141479 [2023-11-29 04:28:51,279 INFO L226 Difference]: Without dead ends: 93392 [2023-11-29 04:28:51,323 INFO L412 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 [2023-11-29 04:28:51,324 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 128 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:51,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 436 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93392 states. [2023-11-29 04:28:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93392 to 93390. [2023-11-29 04:28:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93390 states, 93389 states have (on average 1.4818875884740172) internal successors, (138392), 93389 states have internal predecessors, (138392), 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) [2023-11-29 04:28:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93390 states to 93390 states and 138392 transitions. [2023-11-29 04:28:52,559 INFO L78 Accepts]: Start accepts. Automaton has 93390 states and 138392 transitions. Word has length 88 [2023-11-29 04:28:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:52,560 INFO L495 AbstractCegarLoop]: Abstraction has 93390 states and 138392 transitions. [2023-11-29 04:28:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 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) [2023-11-29 04:28:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 93390 states and 138392 transitions. [2023-11-29 04:28:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:28:52,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:52,766 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:28:52,766 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:52,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1538269572, now seen corresponding path program 1 times [2023-11-29 04:28:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838204217] [2023-11-29 04:28:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838204217] [2023-11-29 04:28:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838204217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:52,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:52,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400922738] [2023-11-29 04:28:52,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:52,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:52,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:52,981 INFO L87 Difference]: Start difference. First operand 93390 states and 138392 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:53,734 INFO L93 Difference]: Finished difference Result 181162 states and 268752 transitions. [2023-11-29 04:28:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2023-11-29 04:28:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:53,826 INFO L225 Difference]: With dead ends: 181162 [2023-11-29 04:28:53,827 INFO L226 Difference]: Without dead ends: 88008 [2023-11-29 04:28:53,855 INFO L412 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 [2023-11-29 04:28:53,856 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 88 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:53,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 413 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88008 states. [2023-11-29 04:28:54,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88008 to 88006. [2023-11-29 04:28:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88006 states, 88005 states have (on average 1.4740753366286006) internal successors, (129726), 88005 states have internal predecessors, (129726), 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) [2023-11-29 04:28:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88006 states to 88006 states and 129726 transitions. [2023-11-29 04:28:54,864 INFO L78 Accepts]: Start accepts. Automaton has 88006 states and 129726 transitions. Word has length 89 [2023-11-29 04:28:54,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:54,865 INFO L495 AbstractCegarLoop]: Abstraction has 88006 states and 129726 transitions. [2023-11-29 04:28:54,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 88006 states and 129726 transitions. [2023-11-29 04:28:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:28:54,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:54,869 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:54,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:28:54,869 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:54,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1581788492, now seen corresponding path program 1 times [2023-11-29 04:28:54,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830998349] [2023-11-29 04:28:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:54,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830998349] [2023-11-29 04:28:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830998349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:54,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690284978] [2023-11-29 04:28:54,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:54,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:54,988 INFO L87 Difference]: Start difference. First operand 88006 states and 129726 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:55,496 INFO L93 Difference]: Finished difference Result 120663 states and 178229 transitions. [2023-11-29 04:28:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2023-11-29 04:28:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:55,531 INFO L225 Difference]: With dead ends: 120663 [2023-11-29 04:28:55,531 INFO L226 Difference]: Without dead ends: 32993 [2023-11-29 04:28:55,568 INFO L412 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 [2023-11-29 04:28:55,569 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 62 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:55,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 382 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32993 states. [2023-11-29 04:28:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32993 to 32991. [2023-11-29 04:28:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32991 states, 32990 states have (on average 1.471324643831464) internal successors, (48539), 32990 states have internal predecessors, (48539), 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) [2023-11-29 04:28:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32991 states to 32991 states and 48539 transitions. [2023-11-29 04:28:56,050 INFO L78 Accepts]: Start accepts. Automaton has 32991 states and 48539 transitions. Word has length 89 [2023-11-29 04:28:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:56,050 INFO L495 AbstractCegarLoop]: Abstraction has 32991 states and 48539 transitions. [2023-11-29 04:28:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 32991 states and 48539 transitions. [2023-11-29 04:28:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:28:56,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:56,053 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:56,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:28:56,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:56,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 383235429, now seen corresponding path program 1 times [2023-11-29 04:28:56,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:56,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155017700] [2023-11-29 04:28:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:28:56,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:56,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155017700] [2023-11-29 04:28:56,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155017700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:56,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:56,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018950668] [2023-11-29 04:28:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:56,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:56,156 INFO L87 Difference]: Start difference. First operand 32991 states and 48539 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:56,485 INFO L93 Difference]: Finished difference Result 44359 states and 65429 transitions. [2023-11-29 04:28:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2023-11-29 04:28:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:56,499 INFO L225 Difference]: With dead ends: 44359 [2023-11-29 04:28:56,499 INFO L226 Difference]: Without dead ends: 11961 [2023-11-29 04:28:56,508 INFO L412 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 [2023-11-29 04:28:56,510 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 48 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:56,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 342 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11961 states. [2023-11-29 04:28:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11961 to 11959. [2023-11-29 04:28:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11959 states, 11958 states have (on average 1.4680548586720188) internal successors, (17555), 11958 states have internal predecessors, (17555), 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) [2023-11-29 04:28:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11959 states to 11959 states and 17555 transitions. [2023-11-29 04:28:56,621 INFO L78 Accepts]: Start accepts. Automaton has 11959 states and 17555 transitions. Word has length 89 [2023-11-29 04:28:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:56,621 INFO L495 AbstractCegarLoop]: Abstraction has 11959 states and 17555 transitions. [2023-11-29 04:28:56,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11959 states and 17555 transitions. [2023-11-29 04:28:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 04:28:56,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:56,623 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:28:56,623 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:56,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -227768384, now seen corresponding path program 1 times [2023-11-29 04:28:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:56,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37898941] [2023-11-29 04:28:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:56,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:28:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37898941] [2023-11-29 04:28:56,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37898941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:56,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:56,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:56,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729187378] [2023-11-29 04:28:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:56,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:28:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:28:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:28:56,811 INFO L87 Difference]: Start difference. First operand 11959 states and 17555 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:56,935 INFO L93 Difference]: Finished difference Result 35214 states and 51598 transitions. [2023-11-29 04:28:56,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:28:56,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 91 [2023-11-29 04:28:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:56,957 INFO L225 Difference]: With dead ends: 35214 [2023-11-29 04:28:56,958 INFO L226 Difference]: Without dead ends: 23263 [2023-11-29 04:28:56,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:56,968 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 403 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:56,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 480 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23263 states. [2023-11-29 04:28:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23263 to 23261. [2023-11-29 04:28:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23261 states, 23260 states have (on average 1.452493551160791) internal successors, (33785), 23260 states have internal predecessors, (33785), 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) [2023-11-29 04:28:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23261 states to 23261 states and 33785 transitions. [2023-11-29 04:28:57,236 INFO L78 Accepts]: Start accepts. Automaton has 23261 states and 33785 transitions. Word has length 91 [2023-11-29 04:28:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:57,236 INFO L495 AbstractCegarLoop]: Abstraction has 23261 states and 33785 transitions. [2023-11-29 04:28:57,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-29 04:28:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 23261 states and 33785 transitions. [2023-11-29 04:28:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 04:28:57,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:57,239 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:57,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:28:57,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:57,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1447122408, now seen corresponding path program 1 times [2023-11-29 04:28:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256210022] [2023-11-29 04:28:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:28:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256210022] [2023-11-29 04:28:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256210022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:57,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375007979] [2023-11-29 04:28:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:57,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:57,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:57,281 INFO L87 Difference]: Start difference. First operand 23261 states and 33785 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-29 04:28:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:57,533 INFO L93 Difference]: Finished difference Result 69727 states and 101263 transitions. [2023-11-29 04:28:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 92 [2023-11-29 04:28:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:57,570 INFO L225 Difference]: With dead ends: 69727 [2023-11-29 04:28:57,570 INFO L226 Difference]: Without dead ends: 46513 [2023-11-29 04:28:57,583 INFO L412 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 [2023-11-29 04:28:57,584 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 187 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:57,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 568 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46513 states. [2023-11-29 04:28:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46513 to 23263. [2023-11-29 04:28:57,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23263 states, 23262 states have (on average 1.452454647063881) internal successors, (33787), 23262 states have internal predecessors, (33787), 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) [2023-11-29 04:28:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23263 states to 23263 states and 33787 transitions. [2023-11-29 04:28:57,920 INFO L78 Accepts]: Start accepts. Automaton has 23263 states and 33787 transitions. Word has length 92 [2023-11-29 04:28:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 23263 states and 33787 transitions. [2023-11-29 04:28:57,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-29 04:28:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 23263 states and 33787 transitions. [2023-11-29 04:28:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 04:28:57,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:57,923 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:57,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:28:57,923 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:57,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1763490096, now seen corresponding path program 1 times [2023-11-29 04:28:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:57,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909707217] [2023-11-29 04:28:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:28:57,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:57,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909707217] [2023-11-29 04:28:57,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909707217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:57,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:57,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:28:57,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956809456] [2023-11-29 04:28:57,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:28:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:28:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:28:57,980 INFO L87 Difference]: Start difference. First operand 23263 states and 33787 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 04:28:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:58,115 INFO L93 Difference]: Finished difference Result 67955 states and 98570 transitions. [2023-11-29 04:28:58,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:28:58,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 93 [2023-11-29 04:28:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:58,152 INFO L225 Difference]: With dead ends: 67955 [2023-11-29 04:28:58,152 INFO L226 Difference]: Without dead ends: 45217 [2023-11-29 04:28:58,167 INFO L412 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 [2023-11-29 04:28:58,168 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 141 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:58,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 515 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45217 states. [2023-11-29 04:28:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45217 to 45215. [2023-11-29 04:28:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45215 states, 45214 states have (on average 1.4362807979829257) internal successors, (64940), 45214 states have internal predecessors, (64940), 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) [2023-11-29 04:28:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45215 states to 45215 states and 64940 transitions. [2023-11-29 04:28:58,675 INFO L78 Accepts]: Start accepts. Automaton has 45215 states and 64940 transitions. Word has length 93 [2023-11-29 04:28:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:58,675 INFO L495 AbstractCegarLoop]: Abstraction has 45215 states and 64940 transitions. [2023-11-29 04:28:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 04:28:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 45215 states and 64940 transitions. [2023-11-29 04:28:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 04:28:58,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:58,680 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:58,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:28:58,680 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:58,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:58,681 INFO L85 PathProgramCache]: Analyzing trace with hash 284117645, now seen corresponding path program 1 times [2023-11-29 04:28:58,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:58,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635269129] [2023-11-29 04:28:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:58,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:28:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635269129] [2023-11-29 04:28:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635269129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:28:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:28:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:28:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660041417] [2023-11-29 04:28:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:28:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:28:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:28:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:58,834 INFO L87 Difference]: Start difference. First operand 45215 states and 64940 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-29 04:28:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:59,321 INFO L93 Difference]: Finished difference Result 132585 states and 190081 transitions. [2023-11-29 04:28:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:28:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 93 [2023-11-29 04:28:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:59,408 INFO L225 Difference]: With dead ends: 132585 [2023-11-29 04:28:59,408 INFO L226 Difference]: Without dead ends: 87383 [2023-11-29 04:28:59,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:28:59,439 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:59,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 649 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:28:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87383 states. [2023-11-29 04:29:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87383 to 87381. [2023-11-29 04:29:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87381 states, 87380 states have (on average 1.420725566491188) internal successors, (124143), 87380 states have internal predecessors, (124143), 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) [2023-11-29 04:29:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87381 states to 87381 states and 124143 transitions. [2023-11-29 04:29:00,669 INFO L78 Accepts]: Start accepts. Automaton has 87381 states and 124143 transitions. Word has length 93 [2023-11-29 04:29:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:00,669 INFO L495 AbstractCegarLoop]: Abstraction has 87381 states and 124143 transitions. [2023-11-29 04:29:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-29 04:29:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 87381 states and 124143 transitions. [2023-11-29 04:29:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 04:29:00,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:00,677 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:00,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:29:00,677 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:00,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:00,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1312355455, now seen corresponding path program 1 times [2023-11-29 04:29:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712324205] [2023-11-29 04:29:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:29:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712324205] [2023-11-29 04:29:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712324205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:00,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:00,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:29:00,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799790366] [2023-11-29 04:29:00,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:29:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:29:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:00,797 INFO L87 Difference]: Start difference. First operand 87381 states and 124143 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 04:29:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:01,458 INFO L93 Difference]: Finished difference Result 174880 states and 248391 transitions. [2023-11-29 04:29:01,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:01,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 93 [2023-11-29 04:29:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:01,540 INFO L225 Difference]: With dead ends: 174880 [2023-11-29 04:29:01,540 INFO L226 Difference]: Without dead ends: 87906 [2023-11-29 04:29:01,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:29:01,557 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 390 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:01,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 459 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87906 states. [2023-11-29 04:29:02,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87906 to 87904. [2023-11-29 04:29:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87904 states, 87903 states have (on average 1.407767652981127) internal successors, (123747), 87903 states have internal predecessors, (123747), 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) [2023-11-29 04:29:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87904 states to 87904 states and 123747 transitions. [2023-11-29 04:29:02,615 INFO L78 Accepts]: Start accepts. Automaton has 87904 states and 123747 transitions. Word has length 93 [2023-11-29 04:29:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:02,615 INFO L495 AbstractCegarLoop]: Abstraction has 87904 states and 123747 transitions. [2023-11-29 04:29:02,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 04:29:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 87904 states and 123747 transitions. [2023-11-29 04:29:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 04:29:02,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:02,624 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:02,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 04:29:02,624 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:02,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:02,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1812454457, now seen corresponding path program 1 times [2023-11-29 04:29:02,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534595218] [2023-11-29 04:29:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:29:02,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534595218] [2023-11-29 04:29:02,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534595218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:02,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:29:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032760346] [2023-11-29 04:29:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:02,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:29:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:29:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:29:02,676 INFO L87 Difference]: Start difference. First operand 87904 states and 123747 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-29 04:29:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:03,494 INFO L93 Difference]: Finished difference Result 262628 states and 369867 transitions. [2023-11-29 04:29:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:29:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 94 [2023-11-29 04:29:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:03,712 INFO L225 Difference]: With dead ends: 262628 [2023-11-29 04:29:03,712 INFO L226 Difference]: Without dead ends: 175708 [2023-11-29 04:29:03,744 INFO L412 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 [2023-11-29 04:29:03,744 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 173 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:03,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 454 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175708 states. [2023-11-29 04:29:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175708 to 87914. [2023-11-29 04:29:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87914 states, 87913 states have (on average 1.407721269891825) internal successors, (123757), 87913 states have internal predecessors, (123757), 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) [2023-11-29 04:29:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87914 states to 87914 states and 123757 transitions. [2023-11-29 04:29:05,574 INFO L78 Accepts]: Start accepts. Automaton has 87914 states and 123757 transitions. Word has length 94 [2023-11-29 04:29:05,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:05,574 INFO L495 AbstractCegarLoop]: Abstraction has 87914 states and 123757 transitions. [2023-11-29 04:29:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-29 04:29:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 87914 states and 123757 transitions. [2023-11-29 04:29:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 04:29:05,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:05,584 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 04:29:05,584 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:05,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -114359358, now seen corresponding path program 1 times [2023-11-29 04:29:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596586240] [2023-11-29 04:29:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:29:05,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596586240] [2023-11-29 04:29:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596586240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:29:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269812857] [2023-11-29 04:29:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:29:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:29:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:05,747 INFO L87 Difference]: Start difference. First operand 87914 states and 123757 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 04:29:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:06,516 INFO L93 Difference]: Finished difference Result 162754 states and 228963 transitions. [2023-11-29 04:29:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 95 [2023-11-29 04:29:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:06,573 INFO L225 Difference]: With dead ends: 162754 [2023-11-29 04:29:06,574 INFO L226 Difference]: Without dead ends: 74507 [2023-11-29 04:29:06,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:29:06,595 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 382 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:06,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 450 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74507 states. [2023-11-29 04:29:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74507 to 74505. [2023-11-29 04:29:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74505 states, 74504 states have (on average 1.3932406313754966) internal successors, (103802), 74504 states have internal predecessors, (103802), 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) [2023-11-29 04:29:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74505 states to 74505 states and 103802 transitions. [2023-11-29 04:29:07,613 INFO L78 Accepts]: Start accepts. Automaton has 74505 states and 103802 transitions. Word has length 95 [2023-11-29 04:29:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:07,613 INFO L495 AbstractCegarLoop]: Abstraction has 74505 states and 103802 transitions. [2023-11-29 04:29:07,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 04:29:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 74505 states and 103802 transitions. [2023-11-29 04:29:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 04:29:07,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:07,626 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:07,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 04:29:07,626 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:07,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1819908826, now seen corresponding path program 1 times [2023-11-29 04:29:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031313372] [2023-11-29 04:29:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:29:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031313372] [2023-11-29 04:29:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031313372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:29:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017418716] [2023-11-29 04:29:07,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:29:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:29:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:29:07,677 INFO L87 Difference]: Start difference. First operand 74505 states and 103802 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 04:29:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:08,129 INFO L93 Difference]: Finished difference Result 221053 states and 308414 transitions. [2023-11-29 04:29:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:29:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 96 [2023-11-29 04:29:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:08,267 INFO L225 Difference]: With dead ends: 221053 [2023-11-29 04:29:08,267 INFO L226 Difference]: Without dead ends: 148043 [2023-11-29 04:29:08,316 INFO L412 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 [2023-11-29 04:29:08,317 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 159 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:08,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 540 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148043 states. [2023-11-29 04:29:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148043 to 74525. [2023-11-29 04:29:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74525 states, 74524 states have (on average 1.3930009124577318) internal successors, (103812), 74524 states have internal predecessors, (103812), 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) [2023-11-29 04:29:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74525 states to 74525 states and 103812 transitions. [2023-11-29 04:29:10,331 INFO L78 Accepts]: Start accepts. Automaton has 74525 states and 103812 transitions. Word has length 96 [2023-11-29 04:29:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:10,331 INFO L495 AbstractCegarLoop]: Abstraction has 74525 states and 103812 transitions. [2023-11-29 04:29:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 04:29:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 74525 states and 103812 transitions. [2023-11-29 04:29:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 04:29:10,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:10,343 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:10,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:29:10,344 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:10,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2073868759, now seen corresponding path program 1 times [2023-11-29 04:29:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658138058] [2023-11-29 04:29:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:29:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:10,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658138058] [2023-11-29 04:29:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658138058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:10,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:10,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:29:10,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169636365] [2023-11-29 04:29:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:10,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:29:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:29:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:29:10,514 INFO L87 Difference]: Start difference. First operand 74525 states and 103812 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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) [2023-11-29 04:29:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:10,851 INFO L93 Difference]: Finished difference Result 148789 states and 207320 transitions. [2023-11-29 04:29:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:10,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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) Word has length 97 [2023-11-29 04:29:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:10,913 INFO L225 Difference]: With dead ends: 148789 [2023-11-29 04:29:10,913 INFO L226 Difference]: Without dead ends: 75006 [2023-11-29 04:29:10,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:29:10,949 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 424 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:10,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 629 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75006 states. [2023-11-29 04:29:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75006 to 74548. [2023-11-29 04:29:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74548 states, 74547 states have (on average 1.392758930607536) internal successors, (103826), 74547 states have internal predecessors, (103826), 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) [2023-11-29 04:29:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74548 states to 74548 states and 103826 transitions. [2023-11-29 04:29:11,914 INFO L78 Accepts]: Start accepts. Automaton has 74548 states and 103826 transitions. Word has length 97 [2023-11-29 04:29:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:11,914 INFO L495 AbstractCegarLoop]: Abstraction has 74548 states and 103826 transitions. [2023-11-29 04:29:11,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 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) [2023-11-29 04:29:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 74548 states and 103826 transitions. [2023-11-29 04:29:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 04:29:11,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:11,925 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 04:29:11,925 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:11,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2051035005, now seen corresponding path program 1 times [2023-11-29 04:29:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114584488] [2023-11-29 04:29:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:29:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114584488] [2023-11-29 04:29:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114584488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:29:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992454143] [2023-11-29 04:29:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:29:12,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:12,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:29:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:12,059 INFO L87 Difference]: Start difference. First operand 74548 states and 103826 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 04:29:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:12,473 INFO L93 Difference]: Finished difference Result 170728 states and 237524 transitions. [2023-11-29 04:29:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2023-11-29 04:29:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:12,570 INFO L225 Difference]: With dead ends: 170728 [2023-11-29 04:29:12,570 INFO L226 Difference]: Without dead ends: 100542 [2023-11-29 04:29:12,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:12,610 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 174 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:12,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 640 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100542 states. [2023-11-29 04:29:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100542 to 99932. [2023-11-29 04:29:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99932 states, 99931 states have (on average 1.3747285627082686) internal successors, (137378), 99931 states have internal predecessors, (137378), 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) [2023-11-29 04:29:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99932 states to 99932 states and 137378 transitions. [2023-11-29 04:29:14,344 INFO L78 Accepts]: Start accepts. Automaton has 99932 states and 137378 transitions. Word has length 97 [2023-11-29 04:29:14,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:14,345 INFO L495 AbstractCegarLoop]: Abstraction has 99932 states and 137378 transitions. [2023-11-29 04:29:14,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 04:29:14,345 INFO L276 IsEmpty]: Start isEmpty. Operand 99932 states and 137378 transitions. [2023-11-29 04:29:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 04:29:14,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:14,354 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 04:29:14,354 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:14,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1925410613, now seen corresponding path program 1 times [2023-11-29 04:29:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855930814] [2023-11-29 04:29:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:29:14,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855930814] [2023-11-29 04:29:14,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855930814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:14,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:14,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:29:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878286890] [2023-11-29 04:29:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:14,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:29:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:29:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:14,524 INFO L87 Difference]: Start difference. First operand 99932 states and 137378 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 04:29:15,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:15,109 INFO L93 Difference]: Finished difference Result 176190 states and 243787 transitions. [2023-11-29 04:29:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:15,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2023-11-29 04:29:15,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:15,195 INFO L225 Difference]: With dead ends: 176190 [2023-11-29 04:29:15,195 INFO L226 Difference]: Without dead ends: 81712 [2023-11-29 04:29:15,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:15,246 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 152 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:15,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 601 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:29:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81712 states. [2023-11-29 04:29:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81712 to 81712. [2023-11-29 04:29:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81712 states, 81711 states have (on average 1.3749678745823695) internal successors, (112350), 81711 states have internal predecessors, (112350), 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) [2023-11-29 04:29:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81712 states to 81712 states and 112350 transitions. [2023-11-29 04:29:16,491 INFO L78 Accepts]: Start accepts. Automaton has 81712 states and 112350 transitions. Word has length 97 [2023-11-29 04:29:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:16,491 INFO L495 AbstractCegarLoop]: Abstraction has 81712 states and 112350 transitions. [2023-11-29 04:29:16,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-11-29 04:29:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 81712 states and 112350 transitions. [2023-11-29 04:29:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 04:29:16,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:16,504 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 04:29:16,504 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:16,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash -76257593, now seen corresponding path program 1 times [2023-11-29 04:29:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705476934] [2023-11-29 04:29:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:29:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705476934] [2023-11-29 04:29:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705476934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:16,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:29:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289887176] [2023-11-29 04:29:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:29:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:29:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:29:16,649 INFO L87 Difference]: Start difference. First operand 81712 states and 112350 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2023-11-29 04:29:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:16,973 INFO L93 Difference]: Finished difference Result 133882 states and 186313 transitions. [2023-11-29 04:29:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:29:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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 157 [2023-11-29 04:29:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:17,057 INFO L225 Difference]: With dead ends: 133882 [2023-11-29 04:29:17,057 INFO L226 Difference]: Without dead ends: 98112 [2023-11-29 04:29:17,087 INFO L412 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 [2023-11-29 04:29:17,088 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 484 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:17,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 665 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98112 states. [2023-11-29 04:29:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98112 to 97964. [2023-11-29 04:29:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97964 states, 97963 states have (on average 1.391402876596266) internal successors, (136306), 97963 states have internal predecessors, (136306), 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) [2023-11-29 04:29:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97964 states to 97964 states and 136306 transitions. [2023-11-29 04:29:18,686 INFO L78 Accepts]: Start accepts. Automaton has 97964 states and 136306 transitions. Word has length 157 [2023-11-29 04:29:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 97964 states and 136306 transitions. [2023-11-29 04:29:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2023-11-29 04:29:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 97964 states and 136306 transitions. [2023-11-29 04:29:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 04:29:18,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:18,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:29:18,695 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:18,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1177600367, now seen corresponding path program 2 times [2023-11-29 04:29:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836245868] [2023-11-29 04:29:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-29 04:29:18,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836245868] [2023-11-29 04:29:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836245868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:29:18,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:29:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:29:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169890372] [2023-11-29 04:29:18,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:29:18,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:29:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:29:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:18,818 INFO L87 Difference]: Start difference. First operand 97964 states and 136306 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-29 04:29:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:19,331 INFO L93 Difference]: Finished difference Result 270440 states and 378200 transitions. [2023-11-29 04:29:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:29:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 157 [2023-11-29 04:29:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:19,509 INFO L225 Difference]: With dead ends: 270440 [2023-11-29 04:29:19,509 INFO L226 Difference]: Without dead ends: 180826 [2023-11-29 04:29:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:29:19,571 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 108 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 780 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:29:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180826 states. [2023-11-29 04:29:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180826 to 143120. [2023-11-29 04:29:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143120 states, 143119 states have (on average 1.3841768039184175) internal successors, (198102), 143119 states have internal predecessors, (198102), 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) [2023-11-29 04:29:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143120 states to 143120 states and 198102 transitions. [2023-11-29 04:29:22,066 INFO L78 Accepts]: Start accepts. Automaton has 143120 states and 198102 transitions. Word has length 157 [2023-11-29 04:29:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:22,067 INFO L495 AbstractCegarLoop]: Abstraction has 143120 states and 198102 transitions. [2023-11-29 04:29:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2023-11-29 04:29:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 143120 states and 198102 transitions. [2023-11-29 04:29:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 04:29:22,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:22,078 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 04:29:22,078 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:22,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1545004289, now seen corresponding path program 1 times [2023-11-29 04:29:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:22,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119394898] [2023-11-29 04:29:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:29:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119394898] [2023-11-29 04:29:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119394898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:29:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001347203] [2023-11-29 04:29:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:22,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:29:22,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:29:22,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:29:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:22,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:29:22,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:29:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:29:22,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:29:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 84 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:29:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001347203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:29:23,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:29:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-11-29 04:29:23,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800783530] [2023-11-29 04:29:23,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:29:23,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:29:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:23,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:29:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:29:23,788 INFO L87 Difference]: Start difference. First operand 143120 states and 198102 transitions. Second operand has 14 states, 14 states have (on average 23.785714285714285) internal successors, (333), 14 states have internal predecessors, (333), 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) [2023-11-29 04:29:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:25,505 INFO L93 Difference]: Finished difference Result 481836 states and 668462 transitions. [2023-11-29 04:29:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:29:25,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.785714285714285) internal successors, (333), 14 states have internal predecessors, (333), 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 157 [2023-11-29 04:29:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:25,885 INFO L225 Difference]: With dead ends: 481836 [2023-11-29 04:29:25,885 INFO L226 Difference]: Without dead ends: 310874 [2023-11-29 04:29:25,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:29:25,964 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 856 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:25,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1435 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:29:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310874 states. [2023-11-29 04:29:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310874 to 252176. [2023-11-29 04:29:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252176 states, 252175 states have (on average 1.3914067611777536) internal successors, (350878), 252175 states have internal predecessors, (350878), 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) [2023-11-29 04:29:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252176 states to 252176 states and 350878 transitions. [2023-11-29 04:29:29,987 INFO L78 Accepts]: Start accepts. Automaton has 252176 states and 350878 transitions. Word has length 157 [2023-11-29 04:29:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:29,987 INFO L495 AbstractCegarLoop]: Abstraction has 252176 states and 350878 transitions. [2023-11-29 04:29:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.785714285714285) internal successors, (333), 14 states have internal predecessors, (333), 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) [2023-11-29 04:29:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 252176 states and 350878 transitions. [2023-11-29 04:29:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 04:29:29,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:29,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:30,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:29:30,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:30,196 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:30,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:30,197 INFO L85 PathProgramCache]: Analyzing trace with hash -421544084, now seen corresponding path program 1 times [2023-11-29 04:29:30,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:30,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085477903] [2023-11-29 04:29:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:29:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085477903] [2023-11-29 04:29:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085477903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:29:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960649915] [2023-11-29 04:29:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:30,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:29:30,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:29:30,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:29:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:30,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:29:30,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:29:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:29:31,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:29:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:29:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960649915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:29:31,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:29:31,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 15 [2023-11-29 04:29:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87578507] [2023-11-29 04:29:31,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:29:31,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:29:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:29:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:29:31,835 INFO L87 Difference]: Start difference. First operand 252176 states and 350878 transitions. Second operand has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 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) [2023-11-29 04:29:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:34,976 INFO L93 Difference]: Finished difference Result 761460 states and 1066754 transitions. [2023-11-29 04:29:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:29:34,977 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 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 159 [2023-11-29 04:29:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:35,605 INFO L225 Difference]: With dead ends: 761460 [2023-11-29 04:29:35,605 INFO L226 Difference]: Without dead ends: 476658 [2023-11-29 04:29:35,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:29:35,733 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1732 mSDsluCounter, 3039 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:35,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 3520 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:29:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476658 states. [2023-11-29 04:29:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476658 to 353204. [2023-11-29 04:29:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353204 states, 353203 states have (on average 1.3890425619261444) internal successors, (490614), 353203 states have internal predecessors, (490614), 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) [2023-11-29 04:29:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353204 states to 353204 states and 490614 transitions. [2023-11-29 04:29:41,709 INFO L78 Accepts]: Start accepts. Automaton has 353204 states and 490614 transitions. Word has length 159 [2023-11-29 04:29:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:41,710 INFO L495 AbstractCegarLoop]: Abstraction has 353204 states and 490614 transitions. [2023-11-29 04:29:41,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 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) [2023-11-29 04:29:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 353204 states and 490614 transitions. [2023-11-29 04:29:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 04:29:41,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:41,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:41,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:29:41,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:41,922 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -740065762, now seen corresponding path program 1 times [2023-11-29 04:29:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811862302] [2023-11-29 04:29:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:29:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811862302] [2023-11-29 04:29:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811862302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:29:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239595836] [2023-11-29 04:29:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:42,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:42,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:29:42,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:29:42,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:29:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:42,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:29:42,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:29:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:29:42,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:29:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 68 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:29:43,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239595836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:29:43,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:29:43,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 9] total 15 [2023-11-29 04:29:43,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406322624] [2023-11-29 04:29:43,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:29:43,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:29:43,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:29:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:29:43,408 INFO L87 Difference]: Start difference. First operand 353204 states and 490614 transitions. Second operand has 15 states, 15 states have (on average 24.2) internal successors, (363), 15 states have internal predecessors, (363), 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) [2023-11-29 04:29:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:47,012 INFO L93 Difference]: Finished difference Result 1157864 states and 1584730 transitions. [2023-11-29 04:29:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:29:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.2) internal successors, (363), 15 states have internal predecessors, (363), 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 159 [2023-11-29 04:29:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:48,074 INFO L225 Difference]: With dead ends: 1157864 [2023-11-29 04:29:48,074 INFO L226 Difference]: Without dead ends: 813598 [2023-11-29 04:29:48,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:29:48,251 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2252 mSDsluCounter, 3239 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:48,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 3705 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:29:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813598 states. [2023-11-29 04:29:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813598 to 605896. [2023-11-29 04:29:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605896 states, 605895 states have (on average 1.3509436453510921) internal successors, (818530), 605895 states have internal predecessors, (818530), 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) [2023-11-29 04:29:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605896 states to 605896 states and 818530 transitions. [2023-11-29 04:29:58,822 INFO L78 Accepts]: Start accepts. Automaton has 605896 states and 818530 transitions. Word has length 159 [2023-11-29 04:29:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:58,823 INFO L495 AbstractCegarLoop]: Abstraction has 605896 states and 818530 transitions. [2023-11-29 04:29:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.2) internal successors, (363), 15 states have internal predecessors, (363), 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) [2023-11-29 04:29:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 605896 states and 818530 transitions. [2023-11-29 04:29:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 04:29:58,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:58,828 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:58,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:29:59,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:29:59,029 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:59,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 742985846, now seen corresponding path program 1 times [2023-11-29 04:29:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940257250] [2023-11-29 04:29:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 04:29:59,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:59,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940257250] [2023-11-29 04:29:59,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940257250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:29:59,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034638683] [2023-11-29 04:29:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:59,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:29:59,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:29:59,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463d3ce8-df7e-4819-bc83-0056e19c1a71/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:29:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:59,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:29:59,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:29:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:29:59,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:30:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 68 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 04:30:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034638683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:30:00,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:30:00,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 16 [2023-11-29 04:30:00,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393185714] [2023-11-29 04:30:00,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:30:00,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:30:00,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:30:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:30:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:30:00,581 INFO L87 Difference]: Start difference. First operand 605896 states and 818530 transitions. Second operand has 16 states, 16 states have (on average 22.875) internal successors, (366), 16 states have internal predecessors, (366), 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) [2023-11-29 04:30:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:30:09,634 INFO L93 Difference]: Finished difference Result 2806240 states and 3814178 transitions. [2023-11-29 04:30:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 04:30:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.875) internal successors, (366), 16 states have internal predecessors, (366), 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 159 [2023-11-29 04:30:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:30:12,589 INFO L225 Difference]: With dead ends: 2806240 [2023-11-29 04:30:12,589 INFO L226 Difference]: Without dead ends: 2177618 [2023-11-29 04:30:13,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:30:13,558 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 2175 mSDsluCounter, 3281 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 3774 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:30:13,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 3774 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:30:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177618 states.