./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme --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 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:40:51,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:40:51,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:40:51,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:40:51,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:40:52,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:40:52,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:40:52,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:40:52,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:40:52,051 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:40:52,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:40:52,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:40:52,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:40:52,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:40:52,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:40:52,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:40:52,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:40:52,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:40:52,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:40:52,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:40:52,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:40:52,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:40:52,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:40:52,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:40:52,060 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:40:52,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:40:52,061 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:40:52,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:40:52,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:40:52,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:40:52,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:40:52,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:40:52,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:40:52,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:40:52,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:40:52,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:40:52,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:40:52,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:40:52,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:40:52,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:40:52,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:40:52,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:40:52,067 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_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 [2023-11-26 10:40:52,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:40:52,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:40:52,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:40:52,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:40:52,446 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:40:52,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-26 10:40:55,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:40:56,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:40:56,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-26 10:40:56,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/data/5b6101fcb/32c41f08ae8b40d6a70635a6de29b6f3/FLAGddf7a33d2 [2023-11-26 10:40:56,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/data/5b6101fcb/32c41f08ae8b40d6a70635a6de29b6f3 [2023-11-26 10:40:56,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:40:56,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:40:56,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:40:56,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:40:56,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:40:56,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:40:56" (1/1) ... [2023-11-26 10:40:56,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d133701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:56, skipping insertion in model container [2023-11-26 10:40:56,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:40:56" (1/1) ... [2023-11-26 10:40:56,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:40:56,796 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_37d5d1e6-e638-42c6-a095-3b79f6862f73/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2023-11-26 10:40:56,905 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_37d5d1e6-e638-42c6-a095-3b79f6862f73/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2023-11-26 10:40:57,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:40:57,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:40:57,969 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_37d5d1e6-e638-42c6-a095-3b79f6862f73/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2023-11-26 10:40:57,986 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_37d5d1e6-e638-42c6-a095-3b79f6862f73/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2023-11-26 10:40:58,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:40:58,617 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:40:58,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58 WrapperNode [2023-11-26 10:40:58,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:40:58,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:40:58,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:40:58,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:40:58,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:58,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,103 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-11-26 10:40:59,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:40:59,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:40:59,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:40:59,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:40:59,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,437 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]. [2023-11-26 10:40:59,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:40:59,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:40:59,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:40:59,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:40:59,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (1/1) ... [2023-11-26 10:40:59,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:40:59,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:40:59,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:40:59,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37d5d1e6-e638-42c6-a095-3b79f6862f73/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:40:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:40:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:40:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:40:59,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:40:59,984 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:40:59,987 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:41:05,536 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:41:05,674 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:41:05,675 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:41:05,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:05 BoogieIcfgContainer [2023-11-26 10:41:05,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:41:05,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:41:05,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:41:05,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:41:05,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:40:56" (1/3) ... [2023-11-26 10:41:05,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c0323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:05, skipping insertion in model container [2023-11-26 10:41:05,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:40:58" (2/3) ... [2023-11-26 10:41:05,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148c0323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:41:05, skipping insertion in model container [2023-11-26 10:41:05,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:41:05" (3/3) ... [2023-11-26 10:41:05,691 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-26 10:41:05,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:41:05,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 10:41:05,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:41:05,809 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;@4fe48e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:41:05,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 10:41:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:41:05,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:05,832 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] [2023-11-26 10:41:05,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:05,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-11-26 10:41:05,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:05,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143008362] [2023-11-26 10:41:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143008362] [2023-11-26 10:41:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143008362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:41:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455794929] [2023-11-26 10:41:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:06,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:41:06,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:41:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:06,183 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:06,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:06,342 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-11-26 10:41:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:41:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-26 10:41:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:06,375 INFO L225 Difference]: With dead ends: 1654 [2023-11-26 10:41:06,375 INFO L226 Difference]: Without dead ends: 845 [2023-11-26 10:41:06,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:41:06,388 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:06,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-26 10:41:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-26 10:41:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-11-26 10:41:06,514 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-11-26 10:41:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:06,515 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-11-26 10:41:06,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-11-26 10:41:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:41:06,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:06,518 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] [2023-11-26 10:41:06,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:41:06,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:06,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-11-26 10:41:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220697190] [2023-11-26 10:41:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220697190] [2023-11-26 10:41:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220697190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797649916] [2023-11-26 10:41:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:07,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:07,128 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:07,323 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-11-26 10:41:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:07,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-26 10:41:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:07,331 INFO L225 Difference]: With dead ends: 895 [2023-11-26 10:41:07,331 INFO L226 Difference]: Without dead ends: 845 [2023-11-26 10:41:07,333 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 [2023-11-26 10:41:07,334 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:07,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-26 10:41:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-26 10:41:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-11-26 10:41:07,397 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-11-26 10:41:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:07,398 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-11-26 10:41:07,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-11-26 10:41:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 10:41:07,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:07,410 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] [2023-11-26 10:41:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:41:07,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:07,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 167656666, now seen corresponding path program 1 times [2023-11-26 10:41:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498899133] [2023-11-26 10:41:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:07,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:07,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498899133] [2023-11-26 10:41:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498899133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:07,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:07,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385768723] [2023-11-26 10:41:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:07,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:07,787 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:17,225 INFO L93 Difference]: Finished difference Result 3100 states and 5868 transitions. [2023-11-26 10:41:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-11-26 10:41:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:17,239 INFO L225 Difference]: With dead ends: 3100 [2023-11-26 10:41:17,239 INFO L226 Difference]: Without dead ends: 2347 [2023-11-26 10:41:17,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:41:17,242 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2434 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 810 Invalid, 6510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-26 10:41:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2023-11-26 10:41:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2023-11-26 10:41:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2345 states have (on average 1.566311300639659) internal successors, (3673), 2346 states have internal predecessors, (3673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:17,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3673 transitions. [2023-11-26 10:41:17,310 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3673 transitions. Word has length 59 [2023-11-26 10:41:17,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:17,310 INFO L495 AbstractCegarLoop]: Abstraction has 2347 states and 3673 transitions. [2023-11-26 10:41:17,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:17,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3673 transitions. [2023-11-26 10:41:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 10:41:17,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:17,314 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] [2023-11-26 10:41:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:41:17,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:17,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-11-26 10:41:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420282157] [2023-11-26 10:41:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:17,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420282157] [2023-11-26 10:41:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420282157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:17,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:17,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118354293] [2023-11-26 10:41:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:17,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:17,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:17,599 INFO L87 Difference]: Start difference. First operand 2347 states and 3673 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:18,036 INFO L93 Difference]: Finished difference Result 2911 states and 4585 transitions. [2023-11-26 10:41:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:41:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-26 10:41:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:18,054 INFO L225 Difference]: With dead ends: 2911 [2023-11-26 10:41:18,054 INFO L226 Difference]: Without dead ends: 2864 [2023-11-26 10:41:18,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-26 10:41:18,057 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:18,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2023-11-26 10:41:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 2392. [2023-11-26 10:41:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2390 states have (on average 1.5673640167364016) internal successors, (3746), 2391 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3746 transitions. [2023-11-26 10:41:18,132 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3746 transitions. Word has length 62 [2023-11-26 10:41:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:18,135 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3746 transitions. [2023-11-26 10:41:18,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3746 transitions. [2023-11-26 10:41:18,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 10:41:18,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:18,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:18,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:41:18,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:18,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-11-26 10:41:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379079723] [2023-11-26 10:41:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:18,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379079723] [2023-11-26 10:41:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379079723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5671924] [2023-11-26 10:41:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:18,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:18,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:18,298 INFO L87 Difference]: Start difference. First operand 2392 states and 3746 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:18,455 INFO L93 Difference]: Finished difference Result 2565 states and 4025 transitions. [2023-11-26 10:41:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:18,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-26 10:41:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:18,471 INFO L225 Difference]: With dead ends: 2565 [2023-11-26 10:41:18,471 INFO L226 Difference]: Without dead ends: 2473 [2023-11-26 10:41:18,472 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 [2023-11-26 10:41:18,474 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:18,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-11-26 10:41:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2023-11-26 10:41:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.568246253543945) internal successors, (3872), 2470 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3872 transitions. [2023-11-26 10:41:18,612 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3872 transitions. Word has length 64 [2023-11-26 10:41:18,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:18,612 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3872 transitions. [2023-11-26 10:41:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:18,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3872 transitions. [2023-11-26 10:41:18,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 10:41:18,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:18,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:18,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:41:18,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:18,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-11-26 10:41:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755425645] [2023-11-26 10:41:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755425645] [2023-11-26 10:41:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755425645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:19,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:19,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839727469] [2023-11-26 10:41:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:19,026 INFO L87 Difference]: Start difference. First operand 2471 states and 3872 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:19,355 INFO L93 Difference]: Finished difference Result 2644 states and 4148 transitions. [2023-11-26 10:41:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:19,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-26 10:41:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:19,375 INFO L225 Difference]: With dead ends: 2644 [2023-11-26 10:41:19,375 INFO L226 Difference]: Without dead ends: 2473 [2023-11-26 10:41:19,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:41:19,381 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 4510 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:19,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 1909 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2023-11-26 10:41:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2023-11-26 10:41:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5674362089914946) internal successors, (3870), 2470 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3870 transitions. [2023-11-26 10:41:19,471 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3870 transitions. Word has length 64 [2023-11-26 10:41:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:19,472 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3870 transitions. [2023-11-26 10:41:19,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3870 transitions. [2023-11-26 10:41:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 10:41:19,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:19,474 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] [2023-11-26 10:41:19,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:41:19,474 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:19,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-11-26 10:41:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:19,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823624037] [2023-11-26 10:41:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823624037] [2023-11-26 10:41:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823624037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:41:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816642895] [2023-11-26 10:41:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:19,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:41:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:41:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:41:19,792 INFO L87 Difference]: Start difference. First operand 2471 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:19,876 INFO L93 Difference]: Finished difference Result 2479 states and 3879 transitions. [2023-11-26 10:41:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:41:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-26 10:41:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:19,898 INFO L225 Difference]: With dead ends: 2479 [2023-11-26 10:41:19,898 INFO L226 Difference]: Without dead ends: 2477 [2023-11-26 10:41:19,902 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 [2023-11-26 10:41:19,903 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:19,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:19,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2023-11-26 10:41:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2475. [2023-11-26 10:41:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2473 states have (on average 1.566114031540639) internal successors, (3873), 2474 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3873 transitions. [2023-11-26 10:41:19,991 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3873 transitions. Word has length 65 [2023-11-26 10:41:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:19,993 INFO L495 AbstractCegarLoop]: Abstraction has 2475 states and 3873 transitions. [2023-11-26 10:41:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3873 transitions. [2023-11-26 10:41:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:19,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:19,996 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] [2023-11-26 10:41:19,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:41:19,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:19,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-11-26 10:41:19,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:19,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565754887] [2023-11-26 10:41:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:20,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:20,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565754887] [2023-11-26 10:41:20,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565754887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:20,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640784832] [2023-11-26 10:41:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:20,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:20,086 INFO L87 Difference]: Start difference. First operand 2475 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:20,152 INFO L93 Difference]: Finished difference Result 2661 states and 4166 transitions. [2023-11-26 10:41:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:20,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:20,170 INFO L225 Difference]: With dead ends: 2661 [2023-11-26 10:41:20,170 INFO L226 Difference]: Without dead ends: 2565 [2023-11-26 10:41:20,172 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 [2023-11-26 10:41:20,174 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:20,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2023-11-26 10:41:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2563. [2023-11-26 10:41:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2561 states have (on average 1.5657946114798906) internal successors, (4010), 2562 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4010 transitions. [2023-11-26 10:41:20,269 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4010 transitions. Word has length 66 [2023-11-26 10:41:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:20,270 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 4010 transitions. [2023-11-26 10:41:20,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4010 transitions. [2023-11-26 10:41:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:20,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:20,272 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] [2023-11-26 10:41:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:41:20,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:20,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-11-26 10:41:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536319136] [2023-11-26 10:41:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:20,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:20,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536319136] [2023-11-26 10:41:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536319136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:20,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:20,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131969428] [2023-11-26 10:41:20,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:20,433 INFO L87 Difference]: Start difference. First operand 2563 states and 4010 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:20,518 INFO L93 Difference]: Finished difference Result 3061 states and 4790 transitions. [2023-11-26 10:41:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:20,537 INFO L225 Difference]: With dead ends: 3061 [2023-11-26 10:41:20,537 INFO L226 Difference]: Without dead ends: 2800 [2023-11-26 10:41:20,539 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 [2023-11-26 10:41:20,543 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:20,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2023-11-26 10:41:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2798. [2023-11-26 10:41:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2796 states have (on average 1.563662374821173) internal successors, (4372), 2797 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4372 transitions. [2023-11-26 10:41:20,667 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4372 transitions. Word has length 66 [2023-11-26 10:41:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:20,668 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4372 transitions. [2023-11-26 10:41:20,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4372 transitions. [2023-11-26 10:41:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:20,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:20,675 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] [2023-11-26 10:41:20,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:41:20,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:20,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-11-26 10:41:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316154399] [2023-11-26 10:41:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316154399] [2023-11-26 10:41:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316154399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:20,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950425901] [2023-11-26 10:41:20,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:20,801 INFO L87 Difference]: Start difference. First operand 2798 states and 4372 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:20,907 INFO L93 Difference]: Finished difference Result 3742 states and 5834 transitions. [2023-11-26 10:41:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:20,929 INFO L225 Difference]: With dead ends: 3742 [2023-11-26 10:41:20,930 INFO L226 Difference]: Without dead ends: 3246 [2023-11-26 10:41:20,932 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 [2023-11-26 10:41:20,933 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:20,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2023-11-26 10:41:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3244. [2023-11-26 10:41:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3242 states have (on average 1.5570635410240592) internal successors, (5048), 3243 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5048 transitions. [2023-11-26 10:41:21,101 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5048 transitions. Word has length 66 [2023-11-26 10:41:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:21,102 INFO L495 AbstractCegarLoop]: Abstraction has 3244 states and 5048 transitions. [2023-11-26 10:41:21,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5048 transitions. [2023-11-26 10:41:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:21,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:21,104 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] [2023-11-26 10:41:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:41:21,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-11-26 10:41:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176465627] [2023-11-26 10:41:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176465627] [2023-11-26 10:41:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176465627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:21,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:21,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:21,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206914789] [2023-11-26 10:41:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:21,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:21,199 INFO L87 Difference]: Start difference. First operand 3244 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:21,432 INFO L93 Difference]: Finished difference Result 5032 states and 7778 transitions. [2023-11-26 10:41:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:21,457 INFO L225 Difference]: With dead ends: 5032 [2023-11-26 10:41:21,457 INFO L226 Difference]: Without dead ends: 4090 [2023-11-26 10:41:21,460 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 [2023-11-26 10:41:21,461 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:21,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2023-11-26 10:41:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4088. [2023-11-26 10:41:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4086 states have (on average 1.54282917278512) internal successors, (6304), 4087 states have internal predecessors, (6304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6304 transitions. [2023-11-26 10:41:21,701 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6304 transitions. Word has length 66 [2023-11-26 10:41:21,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:21,702 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 6304 transitions. [2023-11-26 10:41:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6304 transitions. [2023-11-26 10:41:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:21,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:21,704 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] [2023-11-26 10:41:21,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:41:21,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-11-26 10:41:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538154149] [2023-11-26 10:41:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538154149] [2023-11-26 10:41:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538154149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:21,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741986882] [2023-11-26 10:41:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:21,795 INFO L87 Difference]: Start difference. First operand 4088 states and 6304 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:22,022 INFO L93 Difference]: Finished difference Result 7468 states and 11378 transitions. [2023-11-26 10:41:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:22,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:22,040 INFO L225 Difference]: With dead ends: 7468 [2023-11-26 10:41:22,041 INFO L226 Difference]: Without dead ends: 5682 [2023-11-26 10:41:22,045 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 [2023-11-26 10:41:22,046 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:22,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2023-11-26 10:41:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5680. [2023-11-26 10:41:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5678 states have (on average 1.5188446636139485) internal successors, (8624), 5679 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 8624 transitions. [2023-11-26 10:41:22,312 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 8624 transitions. Word has length 66 [2023-11-26 10:41:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:22,313 INFO L495 AbstractCegarLoop]: Abstraction has 5680 states and 8624 transitions. [2023-11-26 10:41:22,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 8624 transitions. [2023-11-26 10:41:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:41:22,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:22,314 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] [2023-11-26 10:41:22,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:41:22,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:22,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-11-26 10:41:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:22,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100132914] [2023-11-26 10:41:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:41:22,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:22,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100132914] [2023-11-26 10:41:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100132914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:22,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:41:22,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621872240] [2023-11-26 10:41:22,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:41:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:41:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:41:22,402 INFO L87 Difference]: Start difference. First operand 5680 states and 8624 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:22,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:22,700 INFO L93 Difference]: Finished difference Result 12052 states and 18002 transitions. [2023-11-26 10:41:22,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:41:22,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-26 10:41:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:22,725 INFO L225 Difference]: With dead ends: 12052 [2023-11-26 10:41:22,725 INFO L226 Difference]: Without dead ends: 8674 [2023-11-26 10:41:22,732 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 [2023-11-26 10:41:22,733 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:22,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:41:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8674 states. [2023-11-26 10:41:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8674 to 8672. [2023-11-26 10:41:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8670 states have (on average 1.4855824682814303) internal successors, (12880), 8671 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12880 transitions. [2023-11-26 10:41:23,227 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12880 transitions. Word has length 66 [2023-11-26 10:41:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:23,228 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12880 transitions. [2023-11-26 10:41:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12880 transitions. [2023-11-26 10:41:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:41:23,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:23,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:23,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:41:23,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:23,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-11-26 10:41:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:23,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623941103] [2023-11-26 10:41:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:23,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:41:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623941103] [2023-11-26 10:41:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623941103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:23,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691303844] [2023-11-26 10:41:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:23,502 INFO L87 Difference]: Start difference. First operand 8672 states and 12880 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:25,429 INFO L93 Difference]: Finished difference Result 46318 states and 67703 transitions. [2023-11-26 10:41:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-26 10:41:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:25,549 INFO L225 Difference]: With dead ends: 46318 [2023-11-26 10:41:25,550 INFO L226 Difference]: Without dead ends: 41836 [2023-11-26 10:41:25,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:25,567 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41836 states. [2023-11-26 10:41:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41836 to 14112. [2023-11-26 10:41:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14112 states, 14110 states have (on average 1.4684620836286322) internal successors, (20720), 14111 states have internal predecessors, (20720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 20720 transitions. [2023-11-26 10:41:26,737 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 20720 transitions. Word has length 86 [2023-11-26 10:41:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:26,738 INFO L495 AbstractCegarLoop]: Abstraction has 14112 states and 20720 transitions. [2023-11-26 10:41:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 20720 transitions. [2023-11-26 10:41:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:41:26,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:26,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:26,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:41:26,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:26,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-11-26 10:41:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:26,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239173687] [2023-11-26 10:41:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:26,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:41:26,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:26,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239173687] [2023-11-26 10:41:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239173687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692048553] [2023-11-26 10:41:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:26,998 INFO L87 Difference]: Start difference. First operand 14112 states and 20720 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:29,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:29,461 INFO L93 Difference]: Finished difference Result 52686 states and 76919 transitions. [2023-11-26 10:41:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:29,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-26 10:41:29,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:29,583 INFO L225 Difference]: With dead ends: 52686 [2023-11-26 10:41:29,584 INFO L226 Difference]: Without dead ends: 46316 [2023-11-26 10:41:29,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:29,609 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8061 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:29,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3958 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:41:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46316 states. [2023-11-26 10:41:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46316 to 22720. [2023-11-26 10:41:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22720 states, 22718 states have (on average 1.4571705255744343) internal successors, (33104), 22719 states have internal predecessors, (33104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22720 states to 22720 states and 33104 transitions. [2023-11-26 10:41:31,005 INFO L78 Accepts]: Start accepts. Automaton has 22720 states and 33104 transitions. Word has length 86 [2023-11-26 10:41:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:31,005 INFO L495 AbstractCegarLoop]: Abstraction has 22720 states and 33104 transitions. [2023-11-26 10:41:31,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22720 states and 33104 transitions. [2023-11-26 10:41:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:41:31,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:31,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:31,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:41:31,013 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:31,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-11-26 10:41:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279352863] [2023-11-26 10:41:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:41:31,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:31,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279352863] [2023-11-26 10:41:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279352863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33464517] [2023-11-26 10:41:31,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:31,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:31,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:31,437 INFO L87 Difference]: Start difference. First operand 22720 states and 33104 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:33,606 INFO L93 Difference]: Finished difference Result 59054 states and 86103 transitions. [2023-11-26 10:41:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-26 10:41:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:33,748 INFO L225 Difference]: With dead ends: 59054 [2023-11-26 10:41:33,748 INFO L226 Difference]: Without dead ends: 52684 [2023-11-26 10:41:33,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:33,765 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:33,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2023-11-26 10:41:35,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 29088. [2023-11-26 10:41:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29088 states, 29086 states have (on average 1.4538953448394416) internal successors, (42288), 29087 states have internal predecessors, (42288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29088 states to 29088 states and 42288 transitions. [2023-11-26 10:41:35,544 INFO L78 Accepts]: Start accepts. Automaton has 29088 states and 42288 transitions. Word has length 86 [2023-11-26 10:41:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:41:35,545 INFO L495 AbstractCegarLoop]: Abstraction has 29088 states and 42288 transitions. [2023-11-26 10:41:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29088 states and 42288 transitions. [2023-11-26 10:41:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 10:41:35,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:41:35,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:41:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:41:35,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:41:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:41:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-11-26 10:41:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:41:35,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807249333] [2023-11-26 10:41:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:41:35,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:41:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:41:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:41:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:41:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807249333] [2023-11-26 10:41:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807249333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:41:35,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:41:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:41:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709128150] [2023-11-26 10:41:35,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:41:35,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:41:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:41:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:41:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:41:35,827 INFO L87 Difference]: Start difference. First operand 29088 states and 42288 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:41:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:41:38,091 INFO L93 Difference]: Finished difference Result 65422 states and 95287 transitions. [2023-11-26 10:41:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:41:38,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-26 10:41:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:41:38,195 INFO L225 Difference]: With dead ends: 65422 [2023-11-26 10:41:38,195 INFO L226 Difference]: Without dead ends: 59052 [2023-11-26 10:41:38,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:41:38,208 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:41:38,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:41:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59052 states.