./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd --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 152d7fbf05854462a33897c88f7cf73fa78514058a292c6dd4eaf2d74f1b44e9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:01:07,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:01:07,199 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:01:07,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:01:07,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:01:07,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:01:07,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:01:07,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:01:07,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:01:07,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:01:07,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:01:07,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:01:07,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:01:07,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:01:07,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:01:07,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:01:07,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:01:07,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:01:07,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:01:07,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:01:07,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:01:07,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:01:07,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:01:07,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:01:07,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:01:07,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:01:07,236 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd 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 -> 152d7fbf05854462a33897c88f7cf73fa78514058a292c6dd4eaf2d74f1b44e9 [2024-11-13 15:01:07,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:01:07,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:01:07,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:01:07,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:01:07,539 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:01:07,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem12_label13.c Unable to find full path for "g++" [2024-11-13 15:01:09,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:01:10,294 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:01:10,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/sv-benchmarks/c/eca-rers2012/Problem12_label13.c [2024-11-13 15:01:10,339 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/data/4a6e87ff8/bb7132546af54332bf98d6bbbeb5eef0/FLAG3009a2480 [2024-11-13 15:01:10,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/data/4a6e87ff8/bb7132546af54332bf98d6bbbeb5eef0 [2024-11-13 15:01:10,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:01:10,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:01:10,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:01:10,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:01:10,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:01:10,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:01:10" (1/1) ... [2024-11-13 15:01:10,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cca91e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:10, skipping insertion in model container [2024-11-13 15:01:10,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:01:10" (1/1) ... [2024-11-13 15:01:10,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:01:11,147 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/sv-benchmarks/c/eca-rers2012/Problem12_label13.c[3765,3778] [2024-11-13 15:01:12,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:01:12,058 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:01:12,083 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/sv-benchmarks/c/eca-rers2012/Problem12_label13.c[3765,3778] [2024-11-13 15:01:12,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:01:12,663 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:01:12,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12 WrapperNode [2024-11-13 15:01:12,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:01:12,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:01:12,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:01:12,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:01:12,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:12,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,123 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-13 15:01:13,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:01:13,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:01:13,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:01:13,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:01:13,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,367 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:01:13,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:01:13,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:01:13,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:01:13,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:01:13,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (1/1) ... [2024-11-13 15:01:13,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:01:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:13,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:01:13,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:01:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:01:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:01:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:01:13,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:01:14,005 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:01:14,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:01:19,685 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-13 15:01:19,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:01:19,727 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:01:19,730 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:01:19,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:01:19 BoogieIcfgContainer [2024-11-13 15:01:19,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:01:19,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:01:19,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:01:19,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:01:19,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:01:10" (1/3) ... [2024-11-13 15:01:19,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2dc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:01:19, skipping insertion in model container [2024-11-13 15:01:19,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:01:12" (2/3) ... [2024-11-13 15:01:19,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d2dc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:01:19, skipping insertion in model container [2024-11-13 15:01:19,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:01:19" (3/3) ... [2024-11-13 15:01:19,746 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2024-11-13 15:01:19,763 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:01:19,765 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label13.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:01:19,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:01:19,879 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a6e8234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:01:19,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:01:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:01:19,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:19,897 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:19,898 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:19,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -605763294, now seen corresponding path program 1 times [2024-11-13 15:01:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972317341] [2024-11-13 15:01:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972317341] [2024-11-13 15:01:20,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972317341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:20,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:01:20,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885816215] [2024-11-13 15:01:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:20,326 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:25,429 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-13 15:01:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:01:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-13 15:01:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:25,463 INFO L225 Difference]: With dead ends: 2388 [2024-11-13 15:01:25,463 INFO L226 Difference]: Without dead ends: 1506 [2024-11-13 15:01:25,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:25,479 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 831 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:25,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 15:01:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-13 15:01:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-13 15:01:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2024-11-13 15:01:25,615 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 28 [2024-11-13 15:01:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:25,616 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2024-11-13 15:01:25,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2024-11-13 15:01:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 15:01:25,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:25,619 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:25,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:01:25,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:25,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1902864235, now seen corresponding path program 1 times [2024-11-13 15:01:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842477639] [2024-11-13 15:01:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:25,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:26,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842477639] [2024-11-13 15:01:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842477639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:01:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770505379] [2024-11-13 15:01:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:26,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:26,009 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:30,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:30,369 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2024-11-13 15:01:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:01:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2024-11-13 15:01:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:30,382 INFO L225 Difference]: With dead ends: 4514 [2024-11-13 15:01:30,382 INFO L226 Difference]: Without dead ends: 3010 [2024-11-13 15:01:30,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:30,386 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:30,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 15:01:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-13 15:01:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-13 15:01:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2024-11-13 15:01:30,460 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 101 [2024-11-13 15:01:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:30,461 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2024-11-13 15:01:30,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2024-11-13 15:01:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 15:01:30,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:30,464 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:30,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:01:30,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:30,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash -75578041, now seen corresponding path program 1 times [2024-11-13 15:01:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:30,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035027585] [2024-11-13 15:01:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:30,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:30,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:30,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035027585] [2024-11-13 15:01:30,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035027585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:30,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:30,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:01:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406319586] [2024-11-13 15:01:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:30,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:01:30,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:01:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:01:30,879 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:37,237 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2024-11-13 15:01:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:01:37,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-13 15:01:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:37,258 INFO L225 Difference]: With dead ends: 8267 [2024-11-13 15:01:37,259 INFO L226 Difference]: Without dead ends: 5261 [2024-11-13 15:01:37,262 INFO L431 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 [2024-11-13 15:01:37,263 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:37,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 15:01:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-13 15:01:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-13 15:01:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2024-11-13 15:01:37,379 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 114 [2024-11-13 15:01:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:37,379 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2024-11-13 15:01:37,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2024-11-13 15:01:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-13 15:01:37,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:37,383 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:37,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:01:37,383 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:37,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:37,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1209208577, now seen corresponding path program 1 times [2024-11-13 15:01:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289103830] [2024-11-13 15:01:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 15:01:37,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289103830] [2024-11-13 15:01:37,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289103830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:01:37,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012264182] [2024-11-13 15:01:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:37,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:37,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:01:37,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:01:37,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:01:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:38,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:01:38,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:01:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 15:01:38,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:01:38,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012264182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:38,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:01:38,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 15:01:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130905355] [2024-11-13 15:01:38,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:38,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:38,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:01:38,390 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:42,137 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2024-11-13 15:01:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:01:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 169 [2024-11-13 15:01:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:42,166 INFO L225 Difference]: With dead ends: 14275 [2024-11-13 15:01:42,167 INFO L226 Difference]: Without dead ends: 9767 [2024-11-13 15:01:42,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:01:42,174 INFO L432 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:42,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:01:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-13 15:01:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-13 15:01:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2024-11-13 15:01:42,364 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 169 [2024-11-13 15:01:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:42,365 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2024-11-13 15:01:42,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2024-11-13 15:01:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 15:01:42,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:42,371 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:01:42,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:01:42,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:01:42,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:42,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1101597451, now seen corresponding path program 1 times [2024-11-13 15:01:42,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:42,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333740024] [2024-11-13 15:01:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:01:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333740024] [2024-11-13 15:01:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333740024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:01:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919860406] [2024-11-13 15:01:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:42,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:01:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:01:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:01:42,982 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:47,819 INFO L93 Difference]: Finished difference Result 23326 states and 32178 transitions. [2024-11-13 15:01:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:01:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2024-11-13 15:01:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:47,855 INFO L225 Difference]: With dead ends: 23326 [2024-11-13 15:01:47,855 INFO L226 Difference]: Without dead ends: 14275 [2024-11-13 15:01:47,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:01:47,864 INFO L432 NwaCegarLoop]: 695 mSDtfsCounter, 690 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 4133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:47,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 714 Invalid, 4133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 15:01:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14275 states. [2024-11-13 15:01:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14275 to 14273. [2024-11-13 15:01:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2780269058295963) internal successors, (18240), 14272 states have internal predecessors, (18240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18240 transitions. [2024-11-13 15:01:48,100 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18240 transitions. Word has length 185 [2024-11-13 15:01:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:48,100 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 18240 transitions. [2024-11-13 15:01:48,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18240 transitions. [2024-11-13 15:01:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-13 15:01:48,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:48,105 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:48,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:01:48,105 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:48,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 567101852, now seen corresponding path program 1 times [2024-11-13 15:01:48,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:48,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783778777] [2024-11-13 15:01:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:48,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 15:01:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783778777] [2024-11-13 15:01:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783778777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:48,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:01:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403175048] [2024-11-13 15:01:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:48,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:48,453 INFO L87 Difference]: Start difference. First operand 14273 states and 18240 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:52,487 INFO L93 Difference]: Finished difference Result 34552 states and 45269 transitions. [2024-11-13 15:01:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:01:52,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 259 [2024-11-13 15:01:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:52,535 INFO L225 Difference]: With dead ends: 34552 [2024-11-13 15:01:52,536 INFO L226 Difference]: Without dead ends: 21032 [2024-11-13 15:01:52,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:52,549 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 773 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:52,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1309 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:01:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2024-11-13 15:01:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 20281. [2024-11-13 15:01:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20281 states, 20280 states have (on average 1.2444773175542407) internal successors, (25238), 20280 states have internal predecessors, (25238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20281 states to 20281 states and 25238 transitions. [2024-11-13 15:01:52,856 INFO L78 Accepts]: Start accepts. Automaton has 20281 states and 25238 transitions. Word has length 259 [2024-11-13 15:01:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:52,857 INFO L471 AbstractCegarLoop]: Abstraction has 20281 states and 25238 transitions. [2024-11-13 15:01:52,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20281 states and 25238 transitions. [2024-11-13 15:01:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-11-13 15:01:52,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:52,863 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:52,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:01:52,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:52,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1402368651, now seen corresponding path program 1 times [2024-11-13 15:01:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:52,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050431951] [2024-11-13 15:01:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 15:01:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050431951] [2024-11-13 15:01:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050431951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:01:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261114035] [2024-11-13 15:01:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:53,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:53,167 INFO L87 Difference]: Start difference. First operand 20281 states and 25238 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:01:57,057 INFO L93 Difference]: Finished difference Result 56331 states and 70972 transitions. [2024-11-13 15:01:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:01:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2024-11-13 15:01:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:01:57,140 INFO L225 Difference]: With dead ends: 56331 [2024-11-13 15:01:57,141 INFO L226 Difference]: Without dead ends: 36803 [2024-11-13 15:01:57,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:57,161 INFO L432 NwaCegarLoop]: 1290 mSDtfsCounter, 736 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:01:57,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1298 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:01:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2024-11-13 15:01:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 36052. [2024-11-13 15:01:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.175390419128457) internal successors, (42374), 36051 states have internal predecessors, (42374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 42374 transitions. [2024-11-13 15:01:57,631 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 42374 transitions. Word has length 268 [2024-11-13 15:01:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:01:57,631 INFO L471 AbstractCegarLoop]: Abstraction has 36052 states and 42374 transitions. [2024-11-13 15:01:57,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 42374 transitions. [2024-11-13 15:01:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-13 15:01:57,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:01:57,639 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:01:57,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:01:57,640 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:01:57,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:57,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1951254517, now seen corresponding path program 1 times [2024-11-13 15:01:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:57,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79171551] [2024-11-13 15:01:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:57,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-13 15:01:58,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:58,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79171551] [2024-11-13 15:01:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79171551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:58,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:58,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:01:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125550398] [2024-11-13 15:01:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:58,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:01:58,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:01:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:01:58,089 INFO L87 Difference]: Start difference. First operand 36052 states and 42374 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:01,780 INFO L93 Difference]: Finished difference Result 87122 states and 104494 transitions. [2024-11-13 15:02:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 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 317 [2024-11-13 15:02:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:01,846 INFO L225 Difference]: With dead ends: 87122 [2024-11-13 15:02:01,846 INFO L226 Difference]: Without dead ends: 51823 [2024-11-13 15:02:01,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:01,873 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:01,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 434 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 15:02:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51823 states. [2024-11-13 15:02:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 46566. [2024-11-13 15:02:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.1605712444969398) internal successors, (54042), 46565 states have internal predecessors, (54042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 54042 transitions. [2024-11-13 15:02:02,600 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 54042 transitions. Word has length 317 [2024-11-13 15:02:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:02,601 INFO L471 AbstractCegarLoop]: Abstraction has 46566 states and 54042 transitions. [2024-11-13 15:02:02,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 54042 transitions. [2024-11-13 15:02:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-13 15:02:02,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:02,610 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:02:02,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:02:02,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:02,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1212144664, now seen corresponding path program 1 times [2024-11-13 15:02:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202980317] [2024-11-13 15:02:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:02,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-13 15:02:03,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202980317] [2024-11-13 15:02:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202980317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:03,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:03,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298335173] [2024-11-13 15:02:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:03,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:03,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:03,101 INFO L87 Difference]: Start difference. First operand 46566 states and 54042 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:07,050 INFO L93 Difference]: Finished difference Result 92379 states and 107326 transitions. [2024-11-13 15:02:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 378 [2024-11-13 15:02:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:07,256 INFO L225 Difference]: With dead ends: 92379 [2024-11-13 15:02:07,256 INFO L226 Difference]: Without dead ends: 46566 [2024-11-13 15:02:07,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:07,274 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 778 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:07,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1188 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:02:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46566 states. [2024-11-13 15:02:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 42060. [2024-11-13 15:02:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42060 states, 42059 states have (on average 1.1045911695475403) internal successors, (46458), 42059 states have internal predecessors, (46458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42060 states to 42060 states and 46458 transitions. [2024-11-13 15:02:07,740 INFO L78 Accepts]: Start accepts. Automaton has 42060 states and 46458 transitions. Word has length 378 [2024-11-13 15:02:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:07,740 INFO L471 AbstractCegarLoop]: Abstraction has 42060 states and 46458 transitions. [2024-11-13 15:02:07,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 42060 states and 46458 transitions. [2024-11-13 15:02:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-13 15:02:07,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:07,753 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:07,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:02:07,753 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:07,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash 812110485, now seen corresponding path program 1 times [2024-11-13 15:02:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:07,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146158057] [2024-11-13 15:02:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:07,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 15:02:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146158057] [2024-11-13 15:02:08,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146158057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:08,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:08,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370410860] [2024-11-13 15:02:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:08,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:08,105 INFO L87 Difference]: Start difference. First operand 42060 states and 46458 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:11,605 INFO L93 Difference]: Finished difference Result 85620 states and 94491 transitions. [2024-11-13 15:02:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 416 [2024-11-13 15:02:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:11,637 INFO L225 Difference]: With dead ends: 85620 [2024-11-13 15:02:11,637 INFO L226 Difference]: Without dead ends: 44313 [2024-11-13 15:02:11,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:11,654 INFO L432 NwaCegarLoop]: 999 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:11,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1006 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 15:02:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44313 states. [2024-11-13 15:02:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44313 to 42060. [2024-11-13 15:02:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42060 states, 42059 states have (on average 1.0845003447537982) internal successors, (45613), 42059 states have internal predecessors, (45613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42060 states to 42060 states and 45613 transitions. [2024-11-13 15:02:12,121 INFO L78 Accepts]: Start accepts. Automaton has 42060 states and 45613 transitions. Word has length 416 [2024-11-13 15:02:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:12,121 INFO L471 AbstractCegarLoop]: Abstraction has 42060 states and 45613 transitions. [2024-11-13 15:02:12,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42060 states and 45613 transitions. [2024-11-13 15:02:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-13 15:02:12,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:12,130 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:12,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:02:12,131 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:12,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash 124238098, now seen corresponding path program 1 times [2024-11-13 15:02:12,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:12,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035723671] [2024-11-13 15:02:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:02:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035723671] [2024-11-13 15:02:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035723671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:12,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:12,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455615353] [2024-11-13 15:02:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:12,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:12,517 INFO L87 Difference]: Start difference. First operand 42060 states and 45613 transitions. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:16,434 INFO L93 Difference]: Finished difference Result 90877 states and 98448 transitions. [2024-11-13 15:02:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 430 [2024-11-13 15:02:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:16,481 INFO L225 Difference]: With dead ends: 90877 [2024-11-13 15:02:16,481 INFO L226 Difference]: Without dead ends: 49570 [2024-11-13 15:02:16,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:16,501 INFO L432 NwaCegarLoop]: 1218 mSDtfsCounter, 655 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:16,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1225 Invalid, 2911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:02:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2024-11-13 15:02:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 47317. [2024-11-13 15:02:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47317 states, 47316 states have (on average 1.0783033223433933) internal successors, (51021), 47316 states have internal predecessors, (51021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 51021 transitions. [2024-11-13 15:02:17,129 INFO L78 Accepts]: Start accepts. Automaton has 47317 states and 51021 transitions. Word has length 430 [2024-11-13 15:02:17,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:17,129 INFO L471 AbstractCegarLoop]: Abstraction has 47317 states and 51021 transitions. [2024-11-13 15:02:17,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 47317 states and 51021 transitions. [2024-11-13 15:02:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-13 15:02:17,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:17,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:17,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:02:17,138 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:17,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1246844572, now seen corresponding path program 1 times [2024-11-13 15:02:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206590246] [2024-11-13 15:02:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 118 proven. 257 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 15:02:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206590246] [2024-11-13 15:02:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206590246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:02:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924555866] [2024-11-13 15:02:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:18,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:02:18,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:02:18,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:02:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:18,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:02:18,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:02:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:02:18,535 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:02:18,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924555866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:18,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:02:18,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 15:02:18,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345892432] [2024-11-13 15:02:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:18,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:02:18,538 INFO L87 Difference]: Start difference. First operand 47317 states and 51021 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:22,421 INFO L93 Difference]: Finished difference Result 126925 states and 137528 transitions. [2024-11-13 15:02:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 434 [2024-11-13 15:02:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:22,492 INFO L225 Difference]: With dead ends: 126925 [2024-11-13 15:02:22,492 INFO L226 Difference]: Without dead ends: 80361 [2024-11-13 15:02:22,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:02:22,518 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 611 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:22,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1322 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 15:02:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80361 states. [2024-11-13 15:02:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80361 to 69847. [2024-11-13 15:02:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69847 states, 69846 states have (on average 1.066345961114452) internal successors, (74480), 69846 states have internal predecessors, (74480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69847 states to 69847 states and 74480 transitions. [2024-11-13 15:02:23,304 INFO L78 Accepts]: Start accepts. Automaton has 69847 states and 74480 transitions. Word has length 434 [2024-11-13 15:02:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:23,305 INFO L471 AbstractCegarLoop]: Abstraction has 69847 states and 74480 transitions. [2024-11-13 15:02:23,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 69847 states and 74480 transitions. [2024-11-13 15:02:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-13 15:02:23,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:23,320 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 15:02:23,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:02:23,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c450adbf-495f-4d45-9b74-19eae1ea9666/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:02:23,520 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:23,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1583111186, now seen corresponding path program 1 times [2024-11-13 15:02:23,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501232260] [2024-11-13 15:02:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-13 15:02:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:24,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501232260] [2024-11-13 15:02:24,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501232260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:24,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:24,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:24,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580829266] [2024-11-13 15:02:24,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:24,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:24,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:24,275 INFO L87 Difference]: Start difference. First operand 69847 states and 74480 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:27,658 INFO L93 Difference]: Finished difference Result 161471 states and 172772 transitions. [2024-11-13 15:02:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:27,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 502 [2024-11-13 15:02:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:27,749 INFO L225 Difference]: With dead ends: 161471 [2024-11-13 15:02:27,749 INFO L226 Difference]: Without dead ends: 92377 [2024-11-13 15:02:27,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:27,783 INFO L432 NwaCegarLoop]: 1270 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:27,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1278 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:02:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92377 states. [2024-11-13 15:02:28,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92377 to 90124. [2024-11-13 15:02:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90124 states, 90123 states have (on average 1.0626920985763901) internal successors, (95773), 90123 states have internal predecessors, (95773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90124 states to 90124 states and 95773 transitions. [2024-11-13 15:02:28,862 INFO L78 Accepts]: Start accepts. Automaton has 90124 states and 95773 transitions. Word has length 502 [2024-11-13 15:02:28,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:28,863 INFO L471 AbstractCegarLoop]: Abstraction has 90124 states and 95773 transitions. [2024-11-13 15:02:28,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 90124 states and 95773 transitions. [2024-11-13 15:02:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2024-11-13 15:02:28,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:28,872 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:28,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:02:28,873 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:28,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1177096635, now seen corresponding path program 1 times [2024-11-13 15:02:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482523922] [2024-11-13 15:02:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-13 15:02:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482523922] [2024-11-13 15:02:29,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482523922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100665792] [2024-11-13 15:02:29,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:29,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:29,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:29,269 INFO L87 Difference]: Start difference. First operand 90124 states and 95773 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:33,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:33,144 INFO L93 Difference]: Finished difference Result 195266 states and 207937 transitions. [2024-11-13 15:02:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:33,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 519 [2024-11-13 15:02:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:33,262 INFO L225 Difference]: With dead ends: 195266 [2024-11-13 15:02:33,262 INFO L226 Difference]: Without dead ends: 105895 [2024-11-13 15:02:33,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:33,310 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 846 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:33,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1117 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 15:02:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2024-11-13 15:02:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 104393. [2024-11-13 15:02:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104393 states, 104392 states have (on average 1.0607230439114108) internal successors, (110731), 104392 states have internal predecessors, (110731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104393 states to 104393 states and 110731 transitions. [2024-11-13 15:02:34,639 INFO L78 Accepts]: Start accepts. Automaton has 104393 states and 110731 transitions. Word has length 519 [2024-11-13 15:02:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:34,640 INFO L471 AbstractCegarLoop]: Abstraction has 104393 states and 110731 transitions. [2024-11-13 15:02:34,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:34,640 INFO L276 IsEmpty]: Start isEmpty. Operand 104393 states and 110731 transitions. [2024-11-13 15:02:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2024-11-13 15:02:34,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:34,663 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:34,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:02:34,664 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:34,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1126885481, now seen corresponding path program 1 times [2024-11-13 15:02:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862341966] [2024-11-13 15:02:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:02:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862341966] [2024-11-13 15:02:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862341966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:36,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:36,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:02:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581340289] [2024-11-13 15:02:36,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:36,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:02:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:02:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:02:36,933 INFO L87 Difference]: Start difference. First operand 104393 states and 110731 transitions. Second operand has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:45,395 INFO L93 Difference]: Finished difference Result 222302 states and 235717 transitions. [2024-11-13 15:02:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:02:45,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 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 674 [2024-11-13 15:02:45,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:45,506 INFO L225 Difference]: With dead ends: 222302 [2024-11-13 15:02:45,506 INFO L226 Difference]: Without dead ends: 118662 [2024-11-13 15:02:45,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:02:45,554 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 2049 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8354 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 8849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 8354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:45,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 534 Invalid, 8849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 8354 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 15:02:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2024-11-13 15:02:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 105895. [2024-11-13 15:02:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.0600317298430506) internal successors, (112251), 105894 states have internal predecessors, (112251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 112251 transitions. [2024-11-13 15:02:46,900 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 112251 transitions. Word has length 674 [2024-11-13 15:02:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:46,900 INFO L471 AbstractCegarLoop]: Abstraction has 105895 states and 112251 transitions. [2024-11-13 15:02:46,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.16666666666667) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:46,901 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 112251 transitions. [2024-11-13 15:02:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2024-11-13 15:02:46,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:46,916 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:46,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:02:46,916 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:46,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 256619318, now seen corresponding path program 1 times [2024-11-13 15:02:46,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049601850] [2024-11-13 15:02:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:46,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 818 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-13 15:02:48,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049601850] [2024-11-13 15:02:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049601850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:48,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252256190] [2024-11-13 15:02:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:48,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:48,216 INFO L87 Difference]: Start difference. First operand 105895 states and 112251 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:52,518 INFO L93 Difference]: Finished difference Result 221551 states and 235025 transitions. [2024-11-13 15:02:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:52,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 697 [2024-11-13 15:02:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:02:52,645 INFO L225 Difference]: With dead ends: 221551 [2024-11-13 15:02:52,645 INFO L226 Difference]: Without dead ends: 116409 [2024-11-13 15:02:52,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:52,698 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:02:52,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1362 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:02:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116409 states. [2024-11-13 15:02:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116409 to 115658. [2024-11-13 15:02:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0591663280216501) internal successors, (122500), 115657 states have internal predecessors, (122500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122500 transitions. [2024-11-13 15:02:54,346 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 122500 transitions. Word has length 697 [2024-11-13 15:02:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:02:54,347 INFO L471 AbstractCegarLoop]: Abstraction has 115658 states and 122500 transitions. [2024-11-13 15:02:54,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 122500 transitions. [2024-11-13 15:02:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2024-11-13 15:02:54,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:02:54,364 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:02:54,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:02:54,364 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:02:54,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:02:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1156627707, now seen corresponding path program 1 times [2024-11-13 15:02:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:02:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678714218] [2024-11-13 15:02:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:02:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:02:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:02:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2024-11-13 15:02:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:02:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678714218] [2024-11-13 15:02:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678714218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:02:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:02:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:02:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829347551] [2024-11-13 15:02:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:02:55,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:02:55,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:02:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:02:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:02:55,331 INFO L87 Difference]: Start difference. First operand 115658 states and 122500 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:02:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:02:59,918 INFO L93 Difference]: Finished difference Result 280880 states and 298463 transitions. [2024-11-13 15:02:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:02:59,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 730 [2024-11-13 15:02:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:00,090 INFO L225 Difference]: With dead ends: 280880 [2024-11-13 15:03:00,090 INFO L226 Difference]: Without dead ends: 165975 [2024-11-13 15:03:00,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:03:00,141 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 732 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:00,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 426 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:03:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165975 states. [2024-11-13 15:03:01,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165975 to 161469. [2024-11-13 15:03:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161469 states, 161468 states have (on average 1.056847177149652) internal successors, (170647), 161468 states have internal predecessors, (170647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161469 states to 161469 states and 170647 transitions. [2024-11-13 15:03:02,125 INFO L78 Accepts]: Start accepts. Automaton has 161469 states and 170647 transitions. Word has length 730 [2024-11-13 15:03:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:03:02,125 INFO L471 AbstractCegarLoop]: Abstraction has 161469 states and 170647 transitions. [2024-11-13 15:03:02,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 161469 states and 170647 transitions. [2024-11-13 15:03:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-11-13 15:03:02,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:03:02,147 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:03:02,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:03:02,147 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:03:02,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:03:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -566302212, now seen corresponding path program 1 times [2024-11-13 15:03:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:03:02,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602968044] [2024-11-13 15:03:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:03:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:03:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:03:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 1013 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-11-13 15:03:02,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:03:02,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602968044] [2024-11-13 15:03:02,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602968044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:03:02,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:03:02,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:03:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733990131] [2024-11-13 15:03:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:03:02,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:03:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:03:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:03:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:03:02,834 INFO L87 Difference]: Start difference. First operand 161469 states and 170647 transitions. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:03:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:03:06,790 INFO L93 Difference]: Finished difference Result 324438 states and 342804 transitions. [2024-11-13 15:03:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:03:06,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 772 [2024-11-13 15:03:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:03:06,958 INFO L225 Difference]: With dead ends: 324438 [2024-11-13 15:03:06,958 INFO L226 Difference]: Without dead ends: 163722 [2024-11-13 15:03:07,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:03:07,023 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:03:07,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 220 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 15:03:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163722 states. [2024-11-13 15:03:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163722 to 150204. [2024-11-13 15:03:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150204 states, 150203 states have (on average 1.0477686863777687) internal successors, (157378), 150203 states have internal predecessors, (157378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)