./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/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 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:06:28,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:06:28,443 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:06:28,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:06:28,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:06:28,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:06:28,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:06:28,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:06:28,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:06:28,472 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:06:28,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:06:28,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:06:28,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:06:28,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:06:28,475 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:06:28,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:06:28,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:06:28,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:06:28,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:06:28,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:06:28,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:06:28,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:06:28,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:06:28,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:06:28,480 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:06:28,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:06:28,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:06:28,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:06:28,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:06:28,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:06:28,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:06:28,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:06:28,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:06:28,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:06:28,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:06:28,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:06:28,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:06:28,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:06:28,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:06:28,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:06:28,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:06:28,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:06:28,484 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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 851dc7d49dcc9fde277beeb190c3ab252014728a3bd4281f423bffd927fb4430 [2023-11-29 03:06:28,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:06:28,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:06:28,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:06:28,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:06:28,749 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:06:28,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-29 03:06:31,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:06:31,768 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:06:31,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-29 03:06:31,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/data/d7a663db6/7d49eb3be34f40f4bfaf91b9ca97cfe9/FLAG6f8c4eec2 [2023-11-29 03:06:31,795 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/data/d7a663db6/7d49eb3be34f40f4bfaf91b9ca97cfe9 [2023-11-29 03:06:31,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:06:31,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:06:31,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:06:31,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:06:31,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:06:31,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:31" (1/1) ... [2023-11-29 03:06:31,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657dd665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:31, skipping insertion in model container [2023-11-29 03:06:31,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:06:31" (1/1) ... [2023-11-29 03:06:31,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:06:32,117 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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-11-29 03:06:32,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:06:32,229 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:06:32,294 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_74a3e5d8-4254-4e08-8a40-f157d3984a5f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2023-11-29 03:06:32,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:06:32,359 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:06:32,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32 WrapperNode [2023-11-29 03:06:32,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:06:32,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:06:32,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:06:32,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:06:32,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,435 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1022 [2023-11-29 03:06:32,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:06:32,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:06:32,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:06:32,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:06:32,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,470 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 03:06:32,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:06:32,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:06:32,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:06:32,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:06:32,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (1/1) ... [2023-11-29 03:06:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:06:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:06:32,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:06:32,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74a3e5d8-4254-4e08-8a40-f157d3984a5f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:06:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:06:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:06:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:06:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:06:32,779 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:06:32,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:06:33,464 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:06:33,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:06:33,508 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 03:06:33,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:06:33 BoogieIcfgContainer [2023-11-29 03:06:33,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:06:33,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:06:33,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:06:33,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:06:33,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:06:31" (1/3) ... [2023-11-29 03:06:33,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5721fcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:06:33, skipping insertion in model container [2023-11-29 03:06:33,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:06:32" (2/3) ... [2023-11-29 03:06:33,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5721fcc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:06:33, skipping insertion in model container [2023-11-29 03:06:33,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:06:33" (3/3) ... [2023-11-29 03:06:33,518 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-29 03:06:33,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:06:33,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:06:33,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:06:33,587 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;@143b574b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:06:33,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:06:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 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 03:06:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 03:06:33,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:33,606 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, 1, 1, 1, 1, 1, 1, 1, 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 03:06:33,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:33,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1844007938, now seen corresponding path program 1 times [2023-11-29 03:06:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249163962] [2023-11-29 03:06:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:34,212 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 03:06:34,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:34,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249163962] [2023-11-29 03:06:34,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249163962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:06:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519791803] [2023-11-29 03:06:34,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:06:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:06:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:06:34,249 INFO L87 Difference]: Start difference. First operand has 256 states, 254 states have (on average 1.7283464566929134) internal successors, (439), 255 states have internal predecessors, (439), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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 03:06:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:34,648 INFO L93 Difference]: Finished difference Result 1154 states and 1877 transitions. [2023-11-29 03:06:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:06:34,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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 95 [2023-11-29 03:06:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:34,671 INFO L225 Difference]: With dead ends: 1154 [2023-11-29 03:06:34,671 INFO L226 Difference]: Without dead ends: 1021 [2023-11-29 03:06:34,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:06:34,679 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 3872 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:34,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3872 Valid, 3925 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:06:34,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-11-29 03:06:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 394. [2023-11-29 03:06:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.508905852417303) internal successors, (593), 393 states have internal predecessors, (593), 0 states have call successors, (0), 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 03:06:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 593 transitions. [2023-11-29 03:06:34,757 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 593 transitions. Word has length 95 [2023-11-29 03:06:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:34,758 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 593 transitions. [2023-11-29 03:06:34,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 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 03:06:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 593 transitions. [2023-11-29 03:06:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 03:06:34,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:34,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:06:34,764 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:34,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1673283186, now seen corresponding path program 1 times [2023-11-29 03:06:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:34,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722620326] [2023-11-29 03:06:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:34,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:35,145 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 03:06:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:35,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722620326] [2023-11-29 03:06:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722620326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:35,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:06:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418982719] [2023-11-29 03:06:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:06:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:35,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:06:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:06:35,150 INFO L87 Difference]: Start difference. First operand 394 states and 593 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 03:06:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:35,558 INFO L93 Difference]: Finished difference Result 1971 states and 3069 transitions. [2023-11-29 03:06:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 03:06:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 03:06:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:35,568 INFO L225 Difference]: With dead ends: 1971 [2023-11-29 03:06:35,568 INFO L226 Difference]: Without dead ends: 1675 [2023-11-29 03:06:35,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:06:35,572 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 2103 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:35,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2039 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:06:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-11-29 03:06:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1665. [2023-11-29 03:06:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.5540865384615385) internal successors, (2586), 1664 states have internal predecessors, (2586), 0 states have call successors, (0), 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 03:06:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2586 transitions. [2023-11-29 03:06:35,621 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2586 transitions. Word has length 96 [2023-11-29 03:06:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:35,622 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2586 transitions. [2023-11-29 03:06:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 03:06:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2586 transitions. [2023-11-29 03:06:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:35,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:35,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:35,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:06:35,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:35,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 492623321, now seen corresponding path program 1 times [2023-11-29 03:06:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753516952] [2023-11-29 03:06:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:35,777 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 03:06:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753516952] [2023-11-29 03:06:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753516952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:35,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:35,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513788186] [2023-11-29 03:06:35,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:35,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:35,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:35,781 INFO L87 Difference]: Start difference. First operand 1665 states and 2586 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:36,159 INFO L93 Difference]: Finished difference Result 4635 states and 7276 transitions. [2023-11-29 03:06:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:36,173 INFO L225 Difference]: With dead ends: 4635 [2023-11-29 03:06:36,173 INFO L226 Difference]: Without dead ends: 3020 [2023-11-29 03:06:36,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:36,176 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1485 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:36,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 353 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:06:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2023-11-29 03:06:36,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 3018. [2023-11-29 03:06:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3017 states have (on average 1.5641365594961882) internal successors, (4719), 3017 states have internal predecessors, (4719), 0 states have call successors, (0), 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 03:06:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 4719 transitions. [2023-11-29 03:06:36,234 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 4719 transitions. Word has length 97 [2023-11-29 03:06:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:36,234 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 4719 transitions. [2023-11-29 03:06:36,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 4719 transitions. [2023-11-29 03:06:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:36,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:36,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:36,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:06:36,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:36,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash -323483755, now seen corresponding path program 1 times [2023-11-29 03:06:36,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:36,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066679997] [2023-11-29 03:06:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:36,369 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 03:06:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:36,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066679997] [2023-11-29 03:06:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066679997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:36,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058865040] [2023-11-29 03:06:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:36,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:36,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:36,372 INFO L87 Difference]: Start difference. First operand 3018 states and 4719 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:36,716 INFO L93 Difference]: Finished difference Result 8181 states and 12872 transitions. [2023-11-29 03:06:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:36,745 INFO L225 Difference]: With dead ends: 8181 [2023-11-29 03:06:36,745 INFO L226 Difference]: Without dead ends: 5319 [2023-11-29 03:06:36,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:36,751 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1353 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:36,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 361 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:06:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2023-11-29 03:06:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5317. [2023-11-29 03:06:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 5316 states have (on average 1.5654627539503385) internal successors, (8322), 5316 states have internal predecessors, (8322), 0 states have call successors, (0), 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 03:06:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 8322 transitions. [2023-11-29 03:06:36,949 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 8322 transitions. Word has length 97 [2023-11-29 03:06:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:36,950 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 8322 transitions. [2023-11-29 03:06:36,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 8322 transitions. [2023-11-29 03:06:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:36,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:36,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:36,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:06:36,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:36,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1510224292, now seen corresponding path program 1 times [2023-11-29 03:06:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433365676] [2023-11-29 03:06:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:37,091 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 03:06:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433365676] [2023-11-29 03:06:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433365676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:37,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:37,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185763891] [2023-11-29 03:06:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:37,094 INFO L87 Difference]: Start difference. First operand 5317 states and 8322 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:37,462 INFO L93 Difference]: Finished difference Result 14999 states and 23598 transitions. [2023-11-29 03:06:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:37,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:37,515 INFO L225 Difference]: With dead ends: 14999 [2023-11-29 03:06:37,515 INFO L226 Difference]: Without dead ends: 9879 [2023-11-29 03:06:37,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:37,524 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1339 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 370 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:06:37,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9879 states. [2023-11-29 03:06:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9879 to 9877. [2023-11-29 03:06:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9877 states, 9876 states have (on average 1.5670311867152693) internal successors, (15476), 9876 states have internal predecessors, (15476), 0 states have call successors, (0), 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 03:06:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 15476 transitions. [2023-11-29 03:06:37,783 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 15476 transitions. Word has length 97 [2023-11-29 03:06:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:37,784 INFO L495 AbstractCegarLoop]: Abstraction has 9877 states and 15476 transitions. [2023-11-29 03:06:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 15476 transitions. [2023-11-29 03:06:37,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:37,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:37,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:06:37,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:37,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1479716922, now seen corresponding path program 1 times [2023-11-29 03:06:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019430890] [2023-11-29 03:06:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:37,916 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 03:06:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019430890] [2023-11-29 03:06:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019430890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:37,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139106181] [2023-11-29 03:06:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:37,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:37,919 INFO L87 Difference]: Start difference. First operand 9877 states and 15476 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:38,300 INFO L93 Difference]: Finished difference Result 28883 states and 45350 transitions. [2023-11-29 03:06:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:38,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:38,357 INFO L225 Difference]: With dead ends: 28883 [2023-11-29 03:06:38,357 INFO L226 Difference]: Without dead ends: 19125 [2023-11-29 03:06:38,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:38,371 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1377 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:38,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 357 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:06:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19125 states. [2023-11-29 03:06:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19125 to 19123. [2023-11-29 03:06:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19123 states, 19122 states have (on average 1.5631733082313566) internal successors, (29891), 19122 states have internal predecessors, (29891), 0 states have call successors, (0), 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 03:06:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19123 states to 19123 states and 29891 transitions. [2023-11-29 03:06:38,784 INFO L78 Accepts]: Start accepts. Automaton has 19123 states and 29891 transitions. Word has length 97 [2023-11-29 03:06:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 19123 states and 29891 transitions. [2023-11-29 03:06:38,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19123 states and 29891 transitions. [2023-11-29 03:06:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:38,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:38,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:06:38,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:38,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash 924420663, now seen corresponding path program 1 times [2023-11-29 03:06:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:38,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202869970] [2023-11-29 03:06:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:38,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:38,948 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 03:06:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202869970] [2023-11-29 03:06:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202869970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:38,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818915095] [2023-11-29 03:06:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:38,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:38,951 INFO L87 Difference]: Start difference. First operand 19123 states and 29891 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:39,407 INFO L93 Difference]: Finished difference Result 56727 states and 88773 transitions. [2023-11-29 03:06:39,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:39,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:39,469 INFO L225 Difference]: With dead ends: 56727 [2023-11-29 03:06:39,469 INFO L226 Difference]: Without dead ends: 37693 [2023-11-29 03:06:39,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:39,493 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1403 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:39,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 355 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:06:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37693 states. [2023-11-29 03:06:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37693 to 37691. [2023-11-29 03:06:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37691 states, 37690 states have (on average 1.5573626956752453) internal successors, (58697), 37690 states have internal predecessors, (58697), 0 states have call successors, (0), 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 03:06:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37691 states to 37691 states and 58697 transitions. [2023-11-29 03:06:40,200 INFO L78 Accepts]: Start accepts. Automaton has 37691 states and 58697 transitions. Word has length 97 [2023-11-29 03:06:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:40,200 INFO L495 AbstractCegarLoop]: Abstraction has 37691 states and 58697 transitions. [2023-11-29 03:06:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 37691 states and 58697 transitions. [2023-11-29 03:06:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:06:40,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:40,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:40,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:06:40,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:40,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1113732840, now seen corresponding path program 1 times [2023-11-29 03:06:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650453137] [2023-11-29 03:06:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:40,470 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 03:06:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650453137] [2023-11-29 03:06:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650453137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:06:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919572885] [2023-11-29 03:06:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:40,473 INFO L87 Difference]: Start difference. First operand 37691 states and 58697 transitions. Second operand has 5 states, 5 states have (on average 19.4) 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 03:06:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:41,093 INFO L93 Difference]: Finished difference Result 112443 states and 175227 transitions. [2023-11-29 03:06:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:06:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:41,315 INFO L225 Difference]: With dead ends: 112443 [2023-11-29 03:06:41,315 INFO L226 Difference]: Without dead ends: 74818 [2023-11-29 03:06:41,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:06:41,343 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1425 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:41,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 355 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:06:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74818 states. [2023-11-29 03:06:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74818 to 74816. [2023-11-29 03:06:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74816 states, 74815 states have (on average 1.5499699258170152) internal successors, (115961), 74815 states have internal predecessors, (115961), 0 states have call successors, (0), 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 03:06:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74816 states to 74816 states and 115961 transitions. [2023-11-29 03:06:42,453 INFO L78 Accepts]: Start accepts. Automaton has 74816 states and 115961 transitions. Word has length 97 [2023-11-29 03:06:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:42,453 INFO L495 AbstractCegarLoop]: Abstraction has 74816 states and 115961 transitions. [2023-11-29 03:06:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) 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 03:06:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 74816 states and 115961 transitions. [2023-11-29 03:06:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 03:06:42,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:42,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:06:42,467 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1930495294, now seen corresponding path program 1 times [2023-11-29 03:06:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672680184] [2023-11-29 03:06:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:42,844 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 03:06:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:42,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672680184] [2023-11-29 03:06:42,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672680184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:42,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:42,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:06:42,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040549432] [2023-11-29 03:06:42,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:42,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:06:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:42,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:06:42,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:06:42,847 INFO L87 Difference]: Start difference. First operand 74816 states and 115961 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 03:06:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:43,570 INFO L93 Difference]: Finished difference Result 149314 states and 230714 transitions. [2023-11-29 03:06:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:06:43,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-11-29 03:06:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:43,773 INFO L225 Difference]: With dead ends: 149314 [2023-11-29 03:06:43,773 INFO L226 Difference]: Without dead ends: 149312 [2023-11-29 03:06:43,790 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 03:06:43,791 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 362 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:43,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1472 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:06:43,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149312 states. [2023-11-29 03:06:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149312 to 76352. [2023-11-29 03:06:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76352 states, 76351 states have (on average 1.5389058427525508) internal successors, (117497), 76351 states have internal predecessors, (117497), 0 states have call successors, (0), 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 03:06:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76352 states to 76352 states and 117497 transitions. [2023-11-29 03:06:45,354 INFO L78 Accepts]: Start accepts. Automaton has 76352 states and 117497 transitions. Word has length 98 [2023-11-29 03:06:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:45,356 INFO L495 AbstractCegarLoop]: Abstraction has 76352 states and 117497 transitions. [2023-11-29 03:06:45,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 03:06:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 76352 states and 117497 transitions. [2023-11-29 03:06:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:06:45,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:45,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:45,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:06:45,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:45,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 629373785, now seen corresponding path program 1 times [2023-11-29 03:06:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881751216] [2023-11-29 03:06:45,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:46,061 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 03:06:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:46,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881751216] [2023-11-29 03:06:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881751216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:06:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232761049] [2023-11-29 03:06:46,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:46,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:06:46,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:06:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:06:46,064 INFO L87 Difference]: Start difference. First operand 76352 states and 117497 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:06:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:48,836 INFO L93 Difference]: Finished difference Result 375019 states and 572552 transitions. [2023-11-29 03:06:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:06:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:06:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:49,144 INFO L225 Difference]: With dead ends: 375019 [2023-11-29 03:06:49,145 INFO L226 Difference]: Without dead ends: 299768 [2023-11-29 03:06:49,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:06:49,192 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 3158 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3158 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:49,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3158 Valid, 1810 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:06:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299768 states. [2023-11-29 03:06:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299768 to 76424. [2023-11-29 03:06:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76424 states, 76423 states have (on average 1.538332700888476) internal successors, (117564), 76423 states have internal predecessors, (117564), 0 states have call successors, (0), 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 03:06:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76424 states to 76424 states and 117564 transitions. [2023-11-29 03:06:51,761 INFO L78 Accepts]: Start accepts. Automaton has 76424 states and 117564 transitions. Word has length 99 [2023-11-29 03:06:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:51,761 INFO L495 AbstractCegarLoop]: Abstraction has 76424 states and 117564 transitions. [2023-11-29 03:06:51,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:06:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 76424 states and 117564 transitions. [2023-11-29 03:06:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:06:51,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:51,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:51,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:06:51,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:51,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -130610215, now seen corresponding path program 1 times [2023-11-29 03:06:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892918517] [2023-11-29 03:06:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:52,194 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 03:06:52,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:52,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892918517] [2023-11-29 03:06:52,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892918517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:52,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:52,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:06:52,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130067699] [2023-11-29 03:06:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:52,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:06:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:06:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:06:52,197 INFO L87 Difference]: Start difference. First operand 76424 states and 117564 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:06:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:54,386 INFO L93 Difference]: Finished difference Result 227585 states and 346822 transitions. [2023-11-29 03:06:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:06:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:06:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:54,634 INFO L225 Difference]: With dead ends: 227585 [2023-11-29 03:06:54,634 INFO L226 Difference]: Without dead ends: 206463 [2023-11-29 03:06:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:06:54,679 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2994 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:54,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 1832 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:06:54,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206463 states. [2023-11-29 03:06:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206463 to 77297. [2023-11-29 03:06:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77297 states, 77296 states have (on average 1.5376733595528875) internal successors, (118856), 77296 states have internal predecessors, (118856), 0 states have call successors, (0), 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 03:06:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77297 states to 77297 states and 118856 transitions. [2023-11-29 03:06:56,655 INFO L78 Accepts]: Start accepts. Automaton has 77297 states and 118856 transitions. Word has length 99 [2023-11-29 03:06:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:06:56,655 INFO L495 AbstractCegarLoop]: Abstraction has 77297 states and 118856 transitions. [2023-11-29 03:06:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:06:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 77297 states and 118856 transitions. [2023-11-29 03:06:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:06:56,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:06:56,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:06:56,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:06:56,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:06:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash -678806535, now seen corresponding path program 1 times [2023-11-29 03:06:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:06:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306330124] [2023-11-29 03:06:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:06:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:06:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:06:56,969 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 03:06:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:06:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306330124] [2023-11-29 03:06:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306330124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:06:56,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:06:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:06:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955645626] [2023-11-29 03:06:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:06:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:06:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:56,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:06:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:06:56,972 INFO L87 Difference]: Start difference. First operand 77297 states and 118856 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:06:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:06:58,874 INFO L93 Difference]: Finished difference Result 191510 states and 292795 transitions. [2023-11-29 03:06:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:06:58,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:06:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:06:59,069 INFO L225 Difference]: With dead ends: 191510 [2023-11-29 03:06:59,070 INFO L226 Difference]: Without dead ends: 183867 [2023-11-29 03:06:59,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:06:59,103 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2418 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:06:59,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 1969 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:06:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183867 states. [2023-11-29 03:07:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183867 to 77297. [2023-11-29 03:07:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77297 states, 77296 states have (on average 1.5376216104326226) internal successors, (118852), 77296 states have internal predecessors, (118852), 0 states have call successors, (0), 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 03:07:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77297 states to 77297 states and 118852 transitions. [2023-11-29 03:07:00,643 INFO L78 Accepts]: Start accepts. Automaton has 77297 states and 118852 transitions. Word has length 99 [2023-11-29 03:07:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 77297 states and 118852 transitions. [2023-11-29 03:07:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 77297 states and 118852 transitions. [2023-11-29 03:07:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:07:00,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:00,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:00,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:07:00,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:00,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 831099833, now seen corresponding path program 1 times [2023-11-29 03:07:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:00,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014028877] [2023-11-29 03:07:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:00,998 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 03:07:00,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014028877] [2023-11-29 03:07:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014028877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:07:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960675734] [2023-11-29 03:07:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:01,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:07:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:07:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:07:01,001 INFO L87 Difference]: Start difference. First operand 77297 states and 118852 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:03,033 INFO L93 Difference]: Finished difference Result 290129 states and 443141 transitions. [2023-11-29 03:07:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:07:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:07:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:03,308 INFO L225 Difference]: With dead ends: 290129 [2023-11-29 03:07:03,308 INFO L226 Difference]: Without dead ends: 255513 [2023-11-29 03:07:03,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:07:03,349 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2697 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:03,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 1805 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:07:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255513 states. [2023-11-29 03:07:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255513 to 78272. [2023-11-29 03:07:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78272 states, 78271 states have (on average 1.5355240127250196) internal successors, (120187), 78271 states have internal predecessors, (120187), 0 states have call successors, (0), 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 03:07:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78272 states to 78272 states and 120187 transitions. [2023-11-29 03:07:05,365 INFO L78 Accepts]: Start accepts. Automaton has 78272 states and 120187 transitions. Word has length 99 [2023-11-29 03:07:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 78272 states and 120187 transitions. [2023-11-29 03:07:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 78272 states and 120187 transitions. [2023-11-29 03:07:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:07:05,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:05,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:05,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:07:05,378 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash -514731111, now seen corresponding path program 1 times [2023-11-29 03:07:05,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278260724] [2023-11-29 03:07:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:05,723 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 03:07:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278260724] [2023-11-29 03:07:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278260724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:07:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809580280] [2023-11-29 03:07:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:07:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:07:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:07:05,724 INFO L87 Difference]: Start difference. First operand 78272 states and 120187 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:08,055 INFO L93 Difference]: Finished difference Result 360711 states and 550279 transitions. [2023-11-29 03:07:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:07:08,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:07:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:08,408 INFO L225 Difference]: With dead ends: 360711 [2023-11-29 03:07:08,408 INFO L226 Difference]: Without dead ends: 313168 [2023-11-29 03:07:08,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:07:08,474 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2304 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:08,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 2421 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 03:07:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313168 states. [2023-11-29 03:07:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313168 to 79367. [2023-11-29 03:07:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79367 states, 79366 states have (on average 1.5326714210115162) internal successors, (121642), 79366 states have internal predecessors, (121642), 0 states have call successors, (0), 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 03:07:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79367 states to 79367 states and 121642 transitions. [2023-11-29 03:07:11,574 INFO L78 Accepts]: Start accepts. Automaton has 79367 states and 121642 transitions. Word has length 99 [2023-11-29 03:07:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:11,575 INFO L495 AbstractCegarLoop]: Abstraction has 79367 states and 121642 transitions. [2023-11-29 03:07:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 79367 states and 121642 transitions. [2023-11-29 03:07:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:07:11,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:11,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:11,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:07:11,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1734331257, now seen corresponding path program 1 times [2023-11-29 03:07:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102706125] [2023-11-29 03:07:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:11,847 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 03:07:11,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:11,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102706125] [2023-11-29 03:07:11,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102706125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:11,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:11,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:07:11,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387085345] [2023-11-29 03:07:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:07:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:07:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:07:11,850 INFO L87 Difference]: Start difference. First operand 79367 states and 121642 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:14,794 INFO L93 Difference]: Finished difference Result 384868 states and 586228 transitions. [2023-11-29 03:07:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:07:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-29 03:07:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:15,125 INFO L225 Difference]: With dead ends: 384868 [2023-11-29 03:07:15,125 INFO L226 Difference]: Without dead ends: 325112 [2023-11-29 03:07:15,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:07:15,153 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 2059 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:15,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 3384 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 03:07:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325112 states. [2023-11-29 03:07:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325112 to 80656. [2023-11-29 03:07:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 80655 states have (on average 1.528287148967826) internal successors, (123264), 80655 states have internal predecessors, (123264), 0 states have call successors, (0), 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 03:07:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 123264 transitions. [2023-11-29 03:07:17,962 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 123264 transitions. Word has length 99 [2023-11-29 03:07:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:17,962 INFO L495 AbstractCegarLoop]: Abstraction has 80656 states and 123264 transitions. [2023-11-29 03:07:17,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 03:07:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 123264 transitions. [2023-11-29 03:07:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:17,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:17,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:07:17,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:17,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1462720807, now seen corresponding path program 1 times [2023-11-29 03:07:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592624952] [2023-11-29 03:07:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:18,290 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 03:07:18,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:18,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592624952] [2023-11-29 03:07:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592624952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:18,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:18,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047884590] [2023-11-29 03:07:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:18,292 INFO L87 Difference]: Start difference. First operand 80656 states and 123264 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:18,721 INFO L93 Difference]: Finished difference Result 221844 states and 339826 transitions. [2023-11-29 03:07:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:18,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:18,889 INFO L225 Difference]: With dead ends: 221844 [2023-11-29 03:07:18,889 INFO L226 Difference]: Without dead ends: 147346 [2023-11-29 03:07:18,938 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 03:07:18,939 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 247 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:18,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 879 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147346 states. [2023-11-29 03:07:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147346 to 146608. [2023-11-29 03:07:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146608 states, 146607 states have (on average 1.52014569563527) internal successors, (222864), 146607 states have internal predecessors, (222864), 0 states have call successors, (0), 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 03:07:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146608 states to 146608 states and 222864 transitions. [2023-11-29 03:07:20,777 INFO L78 Accepts]: Start accepts. Automaton has 146608 states and 222864 transitions. Word has length 100 [2023-11-29 03:07:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:20,778 INFO L495 AbstractCegarLoop]: Abstraction has 146608 states and 222864 transitions. [2023-11-29 03:07:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 146608 states and 222864 transitions. [2023-11-29 03:07:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:20,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:20,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:20,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 03:07:20,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:20,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1569828370, now seen corresponding path program 1 times [2023-11-29 03:07:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:20,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067057113] [2023-11-29 03:07:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:20,844 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 03:07:20,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:20,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067057113] [2023-11-29 03:07:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067057113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:20,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172486646] [2023-11-29 03:07:20,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:20,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:20,847 INFO L87 Difference]: Start difference. First operand 146608 states and 222864 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:21,923 INFO L93 Difference]: Finished difference Result 321312 states and 488862 transitions. [2023-11-29 03:07:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:21,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:22,145 INFO L225 Difference]: With dead ends: 321312 [2023-11-29 03:07:22,145 INFO L226 Difference]: Without dead ends: 196390 [2023-11-29 03:07:22,196 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 03:07:22,197 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 251 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:22,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 686 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196390 states. [2023-11-29 03:07:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196390 to 195316. [2023-11-29 03:07:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195316 states, 195315 states have (on average 1.5059724035532345) internal successors, (294139), 195315 states have internal predecessors, (294139), 0 states have call successors, (0), 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 03:07:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195316 states to 195316 states and 294139 transitions. [2023-11-29 03:07:24,777 INFO L78 Accepts]: Start accepts. Automaton has 195316 states and 294139 transitions. Word has length 100 [2023-11-29 03:07:24,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:24,777 INFO L495 AbstractCegarLoop]: Abstraction has 195316 states and 294139 transitions. [2023-11-29 03:07:24,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:24,777 INFO L276 IsEmpty]: Start isEmpty. Operand 195316 states and 294139 transitions. [2023-11-29 03:07:24,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:24,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:24,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:24,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:07:24,788 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:24,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1642130214, now seen corresponding path program 1 times [2023-11-29 03:07:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902734596] [2023-11-29 03:07:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:24,848 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 03:07:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:24,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902734596] [2023-11-29 03:07:24,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902734596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:24,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:24,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725160678] [2023-11-29 03:07:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:24,850 INFO L87 Difference]: Start difference. First operand 195316 states and 294139 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:25,840 INFO L93 Difference]: Finished difference Result 251590 states and 378585 transitions. [2023-11-29 03:07:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:25,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:26,080 INFO L225 Difference]: With dead ends: 251590 [2023-11-29 03:07:26,080 INFO L226 Difference]: Without dead ends: 211468 [2023-11-29 03:07:26,115 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 03:07:26,116 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 210 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:26,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 691 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211468 states. [2023-11-29 03:07:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211468 to 192746. [2023-11-29 03:07:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192746 states, 192745 states have (on average 1.488572985032037) internal successors, (286915), 192745 states have internal predecessors, (286915), 0 states have call successors, (0), 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 03:07:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192746 states to 192746 states and 286915 transitions. [2023-11-29 03:07:28,550 INFO L78 Accepts]: Start accepts. Automaton has 192746 states and 286915 transitions. Word has length 100 [2023-11-29 03:07:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:28,551 INFO L495 AbstractCegarLoop]: Abstraction has 192746 states and 286915 transitions. [2023-11-29 03:07:28,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 192746 states and 286915 transitions. [2023-11-29 03:07:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:28,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:28,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:28,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 03:07:28,571 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:28,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash -118113359, now seen corresponding path program 1 times [2023-11-29 03:07:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:28,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508326669] [2023-11-29 03:07:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:28,640 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 03:07:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:28,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508326669] [2023-11-29 03:07:28,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508326669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:28,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:28,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585824815] [2023-11-29 03:07:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:28,650 INFO L87 Difference]: Start difference. First operand 192746 states and 286915 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:30,165 INFO L93 Difference]: Finished difference Result 501923 states and 748459 transitions. [2023-11-29 03:07:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:30,532 INFO L225 Difference]: With dead ends: 501923 [2023-11-29 03:07:30,533 INFO L226 Difference]: Without dead ends: 328163 [2023-11-29 03:07:30,619 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 03:07:30,620 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 255 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:30,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 718 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328163 states. [2023-11-29 03:07:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328163 to 327681. [2023-11-29 03:07:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327681 states, 327680 states have (on average 1.4823455810546875) internal successors, (485735), 327680 states have internal predecessors, (485735), 0 states have call successors, (0), 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 03:07:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327681 states to 327681 states and 485735 transitions. [2023-11-29 03:07:35,042 INFO L78 Accepts]: Start accepts. Automaton has 327681 states and 485735 transitions. Word has length 100 [2023-11-29 03:07:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:35,042 INFO L495 AbstractCegarLoop]: Abstraction has 327681 states and 485735 transitions. [2023-11-29 03:07:35,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 327681 states and 485735 transitions. [2023-11-29 03:07:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:35,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:35,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:35,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:07:35,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:35,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1807200719, now seen corresponding path program 1 times [2023-11-29 03:07:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545116430] [2023-11-29 03:07:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:35,102 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 03:07:35,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545116430] [2023-11-29 03:07:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545116430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:35,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:35,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:35,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966776875] [2023-11-29 03:07:35,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:35,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:35,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:35,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:35,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:35,104 INFO L87 Difference]: Start difference. First operand 327681 states and 485735 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:36,670 INFO L93 Difference]: Finished difference Result 510465 states and 757493 transitions. [2023-11-29 03:07:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:37,038 INFO L225 Difference]: With dead ends: 510465 [2023-11-29 03:07:37,039 INFO L226 Difference]: Without dead ends: 369719 [2023-11-29 03:07:37,100 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 03:07:37,101 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 216 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:37,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 720 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369719 states. [2023-11-29 03:07:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369719 to 366677. [2023-11-29 03:07:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366677 states, 366676 states have (on average 1.4640800052362304) internal successors, (536843), 366676 states have internal predecessors, (536843), 0 states have call successors, (0), 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 03:07:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366677 states to 366677 states and 536843 transitions. [2023-11-29 03:07:41,717 INFO L78 Accepts]: Start accepts. Automaton has 366677 states and 536843 transitions. Word has length 100 [2023-11-29 03:07:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:41,717 INFO L495 AbstractCegarLoop]: Abstraction has 366677 states and 536843 transitions. [2023-11-29 03:07:41,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 366677 states and 536843 transitions. [2023-11-29 03:07:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:41,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:41,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:41,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 03:07:41,729 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:41,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash -605215566, now seen corresponding path program 1 times [2023-11-29 03:07:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:41,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794751838] [2023-11-29 03:07:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:41,786 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 03:07:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794751838] [2023-11-29 03:07:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794751838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:41,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:41,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504977224] [2023-11-29 03:07:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:41,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:41,789 INFO L87 Difference]: Start difference. First operand 366677 states and 536843 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:43,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:43,544 INFO L93 Difference]: Finished difference Result 683473 states and 1000809 transitions. [2023-11-29 03:07:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:43,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:44,034 INFO L225 Difference]: With dead ends: 683473 [2023-11-29 03:07:44,034 INFO L226 Difference]: Without dead ends: 436823 [2023-11-29 03:07:44,132 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 03:07:44,133 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 226 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:44,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436823 states. [2023-11-29 03:07:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436823 to 433493. [2023-11-29 03:07:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433493 states, 433492 states have (on average 1.4427878715178135) internal successors, (625437), 433492 states have internal predecessors, (625437), 0 states have call successors, (0), 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 03:07:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433493 states to 433493 states and 625437 transitions. [2023-11-29 03:07:49,930 INFO L78 Accepts]: Start accepts. Automaton has 433493 states and 625437 transitions. Word has length 100 [2023-11-29 03:07:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:49,930 INFO L495 AbstractCegarLoop]: Abstraction has 433493 states and 625437 transitions. [2023-11-29 03:07:49,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 433493 states and 625437 transitions. [2023-11-29 03:07:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:07:49,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:49,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:49,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 03:07:49,941 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:49,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1540466351, now seen corresponding path program 1 times [2023-11-29 03:07:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:49,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771608609] [2023-11-29 03:07:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:49,988 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 03:07:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771608609] [2023-11-29 03:07:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771608609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:49,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097541062] [2023-11-29 03:07:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:49,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:49,991 INFO L87 Difference]: Start difference. First operand 433493 states and 625437 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 03:07:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:52,860 INFO L93 Difference]: Finished difference Result 910247 states and 1310543 transitions. [2023-11-29 03:07:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:52,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-29 03:07:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:53,547 INFO L225 Difference]: With dead ends: 910247 [2023-11-29 03:07:53,547 INFO L226 Difference]: Without dead ends: 535427 [2023-11-29 03:07:53,699 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 03:07:53,700 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 236 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:53,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 676 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535427 states. [2023-11-29 03:07:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535427 to 532081. [2023-11-29 03:07:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532081 states, 532080 states have (on average 1.417636445647271) internal successors, (754296), 532080 states have internal predecessors, (754296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)