./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:31:26,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:31:26,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:31:26,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:31:26,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:31:26,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:31:26,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:31:26,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:31:26,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:31:26,541 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:31:26,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:31:26,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:31:26,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:31:26,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:31:26,544 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:31:26,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:31:26,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:31:26,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:31:26,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:31:26,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:31:26,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:31:26,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:31:26,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:31:26,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:31:26,548 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:31:26,549 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:31:26,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:31:26,549 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:31:26,549 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:31:26,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:31:26,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:31:26,550 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:31:26,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:31:26,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:31:26,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:31:26,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:31:26,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:31:26,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:31:26,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:31:26,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:31:26,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:31:26,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:31:26,555 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 [2024-11-16 08:31:26,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:31:26,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:31:26,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:31:26,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:31:26,816 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:31:26,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:31:28,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:31:28,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:31:28,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:31:28,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16312de0a/e8339e8590ea45bb9fec023c4ce042b9/FLAG1a6ee647b [2024-11-16 08:31:28,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16312de0a/e8339e8590ea45bb9fec023c4ce042b9 [2024-11-16 08:31:28,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:31:28,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:31:28,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:31:28,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:31:28,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:31:28,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:31:28" (1/1) ... [2024-11-16 08:31:28,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b27fbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:28, skipping insertion in model container [2024-11-16 08:31:28,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:31:28" (1/1) ... [2024-11-16 08:31:28,774 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:31:28,987 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-16 08:31:29,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:31:29,030 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:31:29,058 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-16 08:31:29,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:31:29,097 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:31:29,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29 WrapperNode [2024-11-16 08:31:29,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:31:29,099 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:31:29,099 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:31:29,099 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:31:29,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,134 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 362 [2024-11-16 08:31:29,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:31:29,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:31:29,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:31:29,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:31:29,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,173 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]. [2024-11-16 08:31:29,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,188 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:31:29,201 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:31:29,201 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:31:29,201 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:31:29,202 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (1/1) ... [2024-11-16 08:31:29,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:31:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:29,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:31:29,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:31:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:31:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:31:29,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:31:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:31:29,401 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:31:29,404 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:31:29,778 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L449: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:31:29,778 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L385: havoc main_~node2____CPAchecker_TMP_1~0#1; [2024-11-16 08:31:29,778 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L154: havoc main_~node2__m2~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L477: havoc main_~node1____CPAchecker_TMP_1~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L271: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L172: havoc main_~node3__m3~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L131: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L207: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L299: havoc main_~node3____CPAchecker_TMP_1~0#1; [2024-11-16 08:31:29,779 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:31:29,799 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-16 08:31:29,800 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:31:29,814 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:31:29,816 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:31:29,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:31:29 BoogieIcfgContainer [2024-11-16 08:31:29,817 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:31:29,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:31:29,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:31:29,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:31:29,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:31:28" (1/3) ... [2024-11-16 08:31:29,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ce2b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:31:29, skipping insertion in model container [2024-11-16 08:31:29,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:31:29" (2/3) ... [2024-11-16 08:31:29,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ce2b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:31:29, skipping insertion in model container [2024-11-16 08:31:29,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:31:29" (3/3) ... [2024-11-16 08:31:29,826 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:31:29,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:31:29,844 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:31:29,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:31:29,915 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;@6755df1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:31:29,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:31:29,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 90 states have (on average 1.6333333333333333) internal successors, (147), 91 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 08:31:29,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:29,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:29,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:29,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1692399551, now seen corresponding path program 1 times [2024-11-16 08:31:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:29,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229565971] [2024-11-16 08:31:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229565971] [2024-11-16 08:31:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229565971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:30,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055867490] [2024-11-16 08:31:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:30,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:30,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:30,337 INFO L87 Difference]: Start difference. First operand has 92 states, 90 states have (on average 1.6333333333333333) internal successors, (147), 91 states have internal predecessors, (147), 0 states have call successors, (0), 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 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:30,380 INFO L93 Difference]: Finished difference Result 217 states and 336 transitions. [2024-11-16 08:31:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:30,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 08:31:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:30,389 INFO L225 Difference]: With dead ends: 217 [2024-11-16 08:31:30,389 INFO L226 Difference]: Without dead ends: 139 [2024-11-16 08:31:30,392 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 [2024-11-16 08:31:30,394 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 97 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:30,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 293 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-16 08:31:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-11-16 08:31:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4779411764705883) internal successors, (201), 136 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 201 transitions. [2024-11-16 08:31:30,425 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 201 transitions. Word has length 38 [2024-11-16 08:31:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:30,425 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 201 transitions. [2024-11-16 08:31:30,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 201 transitions. [2024-11-16 08:31:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 08:31:30,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:30,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:30,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:31:30,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:30,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1537204705, now seen corresponding path program 1 times [2024-11-16 08:31:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287225746] [2024-11-16 08:31:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:30,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:30,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:30,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287225746] [2024-11-16 08:31:30,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287225746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383989669] [2024-11-16 08:31:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:30,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:30,534 INFO L87 Difference]: Start difference. First operand 137 states and 201 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:30,573 INFO L93 Difference]: Finished difference Result 337 states and 509 transitions. [2024-11-16 08:31:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-16 08:31:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:30,575 INFO L225 Difference]: With dead ends: 337 [2024-11-16 08:31:30,575 INFO L226 Difference]: Without dead ends: 220 [2024-11-16 08:31:30,575 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 [2024-11-16 08:31:30,576 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 82 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:30,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 245 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-16 08:31:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2024-11-16 08:31:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.4976958525345623) internal successors, (325), 217 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 325 transitions. [2024-11-16 08:31:30,588 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 325 transitions. Word has length 39 [2024-11-16 08:31:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:30,588 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 325 transitions. [2024-11-16 08:31:30,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 325 transitions. [2024-11-16 08:31:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 08:31:30,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:30,589 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:30,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:31:30,590 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:30,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:30,590 INFO L85 PathProgramCache]: Analyzing trace with hash -565415272, now seen corresponding path program 1 times [2024-11-16 08:31:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122822818] [2024-11-16 08:31:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:30,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122822818] [2024-11-16 08:31:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122822818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028556514] [2024-11-16 08:31:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:30,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:30,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:30,761 INFO L87 Difference]: Start difference. First operand 218 states and 325 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:30,835 INFO L93 Difference]: Finished difference Result 1010 states and 1545 transitions. [2024-11-16 08:31:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 08:31:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:30,847 INFO L225 Difference]: With dead ends: 1010 [2024-11-16 08:31:30,847 INFO L226 Difference]: Without dead ends: 812 [2024-11-16 08:31:30,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:31:30,855 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 522 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:30,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 721 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-11-16 08:31:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 414. [2024-11-16 08:31:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.5036319612590798) internal successors, (621), 413 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 621 transitions. [2024-11-16 08:31:30,897 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 621 transitions. Word has length 40 [2024-11-16 08:31:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:30,897 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 621 transitions. [2024-11-16 08:31:30,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 621 transitions. [2024-11-16 08:31:30,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 08:31:30,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:30,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:30,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:31:30,899 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:30,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2127339992, now seen corresponding path program 1 times [2024-11-16 08:31:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:30,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503737478] [2024-11-16 08:31:30,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:30,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503737478] [2024-11-16 08:31:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503737478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:31,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828993688] [2024-11-16 08:31:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:31,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:31,002 INFO L87 Difference]: Start difference. First operand 414 states and 621 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:31,063 INFO L93 Difference]: Finished difference Result 1432 states and 2164 transitions. [2024-11-16 08:31:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-16 08:31:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:31,066 INFO L225 Difference]: With dead ends: 1432 [2024-11-16 08:31:31,066 INFO L226 Difference]: Without dead ends: 1038 [2024-11-16 08:31:31,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:31,068 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 252 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:31,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 388 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-16 08:31:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2024-11-16 08:31:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.5033881897386254) internal successors, (1553), 1033 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1553 transitions. [2024-11-16 08:31:31,089 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1553 transitions. Word has length 42 [2024-11-16 08:31:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:31,089 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1553 transitions. [2024-11-16 08:31:31,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1553 transitions. [2024-11-16 08:31:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 08:31:31,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:31,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:31,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:31:31,091 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:31,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 288489701, now seen corresponding path program 1 times [2024-11-16 08:31:31,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:31,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200788479] [2024-11-16 08:31:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200788479] [2024-11-16 08:31:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200788479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503999403] [2024-11-16 08:31:31,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:31,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:31,140 INFO L87 Difference]: Start difference. First operand 1034 states and 1553 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:31,160 INFO L93 Difference]: Finished difference Result 2646 states and 3963 transitions. [2024-11-16 08:31:31,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:31,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-16 08:31:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:31,165 INFO L225 Difference]: With dead ends: 2646 [2024-11-16 08:31:31,165 INFO L226 Difference]: Without dead ends: 1632 [2024-11-16 08:31:31,166 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 [2024-11-16 08:31:31,167 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:31,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2024-11-16 08:31:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2024-11-16 08:31:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 1.476365868631062) internal successors, (2405), 1629 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2405 transitions. [2024-11-16 08:31:31,190 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2405 transitions. Word has length 43 [2024-11-16 08:31:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:31,190 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2405 transitions. [2024-11-16 08:31:31,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2405 transitions. [2024-11-16 08:31:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 08:31:31,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:31,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:31,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:31:31,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:31,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 482471162, now seen corresponding path program 1 times [2024-11-16 08:31:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424943546] [2024-11-16 08:31:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424943546] [2024-11-16 08:31:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424943546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:31,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006527228] [2024-11-16 08:31:31,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:31,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:31,369 INFO L87 Difference]: Start difference. First operand 1630 states and 2405 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:31,394 INFO L93 Difference]: Finished difference Result 1776 states and 2598 transitions. [2024-11-16 08:31:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:31,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-11-16 08:31:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:31,399 INFO L225 Difference]: With dead ends: 1776 [2024-11-16 08:31:31,399 INFO L226 Difference]: Without dead ends: 1774 [2024-11-16 08:31:31,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:31,400 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:31,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2024-11-16 08:31:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1774. [2024-11-16 08:31:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1773 states have (on average 1.4376762549351383) internal successors, (2549), 1773 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2549 transitions. [2024-11-16 08:31:31,429 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2549 transitions. Word has length 44 [2024-11-16 08:31:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:31,430 INFO L471 AbstractCegarLoop]: Abstraction has 1774 states and 2549 transitions. [2024-11-16 08:31:31,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2549 transitions. [2024-11-16 08:31:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 08:31:31,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:31,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:31,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:31:31,432 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:31,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2075468017, now seen corresponding path program 1 times [2024-11-16 08:31:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:31,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288018247] [2024-11-16 08:31:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288018247] [2024-11-16 08:31:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288018247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:31,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171134706] [2024-11-16 08:31:31,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:31,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:31,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:31,490 INFO L87 Difference]: Start difference. First operand 1774 states and 2549 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:31,518 INFO L93 Difference]: Finished difference Result 4272 states and 6161 transitions. [2024-11-16 08:31:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:31,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-16 08:31:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:31,525 INFO L225 Difference]: With dead ends: 4272 [2024-11-16 08:31:31,525 INFO L226 Difference]: Without dead ends: 2518 [2024-11-16 08:31:31,527 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 [2024-11-16 08:31:31,528 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 71 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:31,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2024-11-16 08:31:31,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2496. [2024-11-16 08:31:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2495 states have (on average 1.4312625250501) internal successors, (3571), 2495 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3571 transitions. [2024-11-16 08:31:31,561 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3571 transitions. Word has length 45 [2024-11-16 08:31:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:31,561 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 3571 transitions. [2024-11-16 08:31:31,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3571 transitions. [2024-11-16 08:31:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 08:31:31,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:31,563 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:31,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:31:31,563 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:31,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash 251636103, now seen corresponding path program 1 times [2024-11-16 08:31:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572978099] [2024-11-16 08:31:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:31,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:31,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572978099] [2024-11-16 08:31:31,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572978099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:31:31,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379187509] [2024-11-16 08:31:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:31,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:31:31,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:31:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:32,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 08:31:32,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:31:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:32,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:31:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:33,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379187509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:31:33,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:31:33,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-16 08:31:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687701720] [2024-11-16 08:31:33,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:31:33,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 08:31:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 08:31:33,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-16 08:31:33,133 INFO L87 Difference]: Start difference. First operand 2496 states and 3571 transitions. Second operand has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:40,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:40,448 INFO L93 Difference]: Finished difference Result 19429 states and 27640 transitions. [2024-11-16 08:31:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-16 08:31:40,449 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 08:31:40,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:40,500 INFO L225 Difference]: With dead ends: 19429 [2024-11-16 08:31:40,500 INFO L226 Difference]: Without dead ends: 16955 [2024-11-16 08:31:40,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9999 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3935, Invalid=21505, Unknown=0, NotChecked=0, Total=25440 [2024-11-16 08:31:40,513 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 9668 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9668 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:40,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9668 Valid, 1584 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 08:31:40,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16955 states. [2024-11-16 08:31:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16955 to 12716. [2024-11-16 08:31:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12716 states, 12715 states have (on average 1.4057412504915454) internal successors, (17874), 12715 states have internal predecessors, (17874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12716 states to 12716 states and 17874 transitions. [2024-11-16 08:31:40,759 INFO L78 Accepts]: Start accepts. Automaton has 12716 states and 17874 transitions. Word has length 65 [2024-11-16 08:31:40,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:40,761 INFO L471 AbstractCegarLoop]: Abstraction has 12716 states and 17874 transitions. [2024-11-16 08:31:40,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 23 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12716 states and 17874 transitions. [2024-11-16 08:31:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:31:40,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:40,763 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:40,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:31:40,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:40,966 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:40,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:40,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1088971077, now seen corresponding path program 1 times [2024-11-16 08:31:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554265927] [2024-11-16 08:31:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554265927] [2024-11-16 08:31:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554265927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:41,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172100791] [2024-11-16 08:31:41,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:41,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:41,025 INFO L87 Difference]: Start difference. First operand 12716 states and 17874 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:41,071 INFO L93 Difference]: Finished difference Result 18302 states and 25610 transitions. [2024-11-16 08:31:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:41,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 08:31:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:41,104 INFO L225 Difference]: With dead ends: 18302 [2024-11-16 08:31:41,104 INFO L226 Difference]: Without dead ends: 13036 [2024-11-16 08:31:41,114 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 [2024-11-16 08:31:41,116 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 70 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:41,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 279 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2024-11-16 08:31:41,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 12766. [2024-11-16 08:31:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12766 states, 12765 states have (on average 1.3768115942028984) internal successors, (17575), 12765 states have internal predecessors, (17575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12766 states to 12766 states and 17575 transitions. [2024-11-16 08:31:41,302 INFO L78 Accepts]: Start accepts. Automaton has 12766 states and 17575 transitions. Word has length 66 [2024-11-16 08:31:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:41,302 INFO L471 AbstractCegarLoop]: Abstraction has 12766 states and 17575 transitions. [2024-11-16 08:31:41,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12766 states and 17575 transitions. [2024-11-16 08:31:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:31:41,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:41,308 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:41,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:31:41,308 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:41,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2146405865, now seen corresponding path program 1 times [2024-11-16 08:31:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:41,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445183658] [2024-11-16 08:31:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:41,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:41,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445183658] [2024-11-16 08:31:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445183658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:41,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24892703] [2024-11-16 08:31:41,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:41,365 INFO L87 Difference]: Start difference. First operand 12766 states and 17575 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:41,428 INFO L93 Difference]: Finished difference Result 30404 states and 41629 transitions. [2024-11-16 08:31:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:41,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 08:31:41,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:41,456 INFO L225 Difference]: With dead ends: 30404 [2024-11-16 08:31:41,457 INFO L226 Difference]: Without dead ends: 20743 [2024-11-16 08:31:41,469 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 [2024-11-16 08:31:41,470 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 66 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:41,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 236 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20743 states. [2024-11-16 08:31:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20743 to 20691. [2024-11-16 08:31:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20691 states, 20690 states have (on average 1.3537941034316094) internal successors, (28010), 20690 states have internal predecessors, (28010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20691 states to 20691 states and 28010 transitions. [2024-11-16 08:31:41,741 INFO L78 Accepts]: Start accepts. Automaton has 20691 states and 28010 transitions. Word has length 66 [2024-11-16 08:31:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:41,742 INFO L471 AbstractCegarLoop]: Abstraction has 20691 states and 28010 transitions. [2024-11-16 08:31:41,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20691 states and 28010 transitions. [2024-11-16 08:31:41,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:31:41,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:41,744 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:41,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:31:41,744 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:41,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -900434729, now seen corresponding path program 1 times [2024-11-16 08:31:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:41,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165147987] [2024-11-16 08:31:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:41,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165147987] [2024-11-16 08:31:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165147987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:41,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:31:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2413570] [2024-11-16 08:31:41,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:41,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:31:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:31:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:31:41,791 INFO L87 Difference]: Start difference. First operand 20691 states and 28010 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:41,868 INFO L93 Difference]: Finished difference Result 41404 states and 55959 transitions. [2024-11-16 08:31:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:31:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 08:31:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:41,902 INFO L225 Difference]: With dead ends: 41404 [2024-11-16 08:31:41,902 INFO L226 Difference]: Without dead ends: 23502 [2024-11-16 08:31:41,919 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 [2024-11-16 08:31:41,920 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 67 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:41,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 285 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23502 states. [2024-11-16 08:31:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23502 to 22905. [2024-11-16 08:31:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22905 states, 22904 states have (on average 1.340158924205379) internal successors, (30695), 22904 states have internal predecessors, (30695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 30695 transitions. [2024-11-16 08:31:42,199 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 30695 transitions. Word has length 66 [2024-11-16 08:31:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:42,201 INFO L471 AbstractCegarLoop]: Abstraction has 22905 states and 30695 transitions. [2024-11-16 08:31:42,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 30695 transitions. [2024-11-16 08:31:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:31:42,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:42,204 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:42,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:31:42,204 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:42,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash -158869609, now seen corresponding path program 1 times [2024-11-16 08:31:42,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:42,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527779245] [2024-11-16 08:31:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 08:31:42,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:42,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527779245] [2024-11-16 08:31:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527779245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:42,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:42,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:42,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128760605] [2024-11-16 08:31:42,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:42,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:42,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:42,407 INFO L87 Difference]: Start difference. First operand 22905 states and 30695 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:42,539 INFO L93 Difference]: Finished difference Result 44137 states and 59715 transitions. [2024-11-16 08:31:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:42,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 08:31:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:42,596 INFO L225 Difference]: With dead ends: 44137 [2024-11-16 08:31:42,596 INFO L226 Difference]: Without dead ends: 38092 [2024-11-16 08:31:42,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:31:42,614 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 366 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:42,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 597 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38092 states. [2024-11-16 08:31:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38092 to 28756. [2024-11-16 08:31:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28756 states, 28755 states have (on average 1.3386193705442533) internal successors, (38492), 28755 states have internal predecessors, (38492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28756 states to 28756 states and 38492 transitions. [2024-11-16 08:31:43,046 INFO L78 Accepts]: Start accepts. Automaton has 28756 states and 38492 transitions. Word has length 66 [2024-11-16 08:31:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:43,046 INFO L471 AbstractCegarLoop]: Abstraction has 28756 states and 38492 transitions. [2024-11-16 08:31:43,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28756 states and 38492 transitions. [2024-11-16 08:31:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:31:43,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:43,052 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:43,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:31:43,052 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:43,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -25322441, now seen corresponding path program 1 times [2024-11-16 08:31:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57923409] [2024-11-16 08:31:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:31:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57923409] [2024-11-16 08:31:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57923409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:43,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:43,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369681612] [2024-11-16 08:31:43,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:43,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:43,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:43,121 INFO L87 Difference]: Start difference. First operand 28756 states and 38492 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:43,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:43,253 INFO L93 Difference]: Finished difference Result 54794 states and 74017 transitions. [2024-11-16 08:31:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:43,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 08:31:43,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:43,303 INFO L225 Difference]: With dead ends: 54794 [2024-11-16 08:31:43,303 INFO L226 Difference]: Without dead ends: 43551 [2024-11-16 08:31:43,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:31:43,324 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 361 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:43,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 642 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43551 states. [2024-11-16 08:31:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43551 to 37380. [2024-11-16 08:31:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37380 states, 37379 states have (on average 1.333930816768774) internal successors, (49861), 37379 states have internal predecessors, (49861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37380 states to 37380 states and 49861 transitions. [2024-11-16 08:31:43,961 INFO L78 Accepts]: Start accepts. Automaton has 37380 states and 49861 transitions. Word has length 66 [2024-11-16 08:31:43,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:43,961 INFO L471 AbstractCegarLoop]: Abstraction has 37380 states and 49861 transitions. [2024-11-16 08:31:43,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 37380 states and 49861 transitions. [2024-11-16 08:31:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:31:43,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:43,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:43,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:31:43,964 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:43,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:43,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1886168130, now seen corresponding path program 1 times [2024-11-16 08:31:43,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:43,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842456325] [2024-11-16 08:31:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:43,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 08:31:44,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:44,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842456325] [2024-11-16 08:31:44,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842456325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:31:44,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:31:44,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:31:44,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014505105] [2024-11-16 08:31:44,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:31:44,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:31:44,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:44,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:31:44,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:31:44,024 INFO L87 Difference]: Start difference. First operand 37380 states and 49861 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:44,163 INFO L93 Difference]: Finished difference Result 61810 states and 83223 transitions. [2024-11-16 08:31:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:31:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 08:31:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:44,417 INFO L225 Difference]: With dead ends: 61810 [2024-11-16 08:31:44,420 INFO L226 Difference]: Without dead ends: 52516 [2024-11-16 08:31:44,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:31:44,452 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 362 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:44,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 599 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:31:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52516 states. [2024-11-16 08:31:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52516 to 45059. [2024-11-16 08:31:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45059 states, 45058 states have (on average 1.33390296950597) internal successors, (60103), 45058 states have internal predecessors, (60103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45059 states to 45059 states and 60103 transitions. [2024-11-16 08:31:45,269 INFO L78 Accepts]: Start accepts. Automaton has 45059 states and 60103 transitions. Word has length 67 [2024-11-16 08:31:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:45,269 INFO L471 AbstractCegarLoop]: Abstraction has 45059 states and 60103 transitions. [2024-11-16 08:31:45,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 45059 states and 60103 transitions. [2024-11-16 08:31:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:31:45,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:45,273 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:45,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:31:45,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:45,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1981152882, now seen corresponding path program 1 times [2024-11-16 08:31:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940448369] [2024-11-16 08:31:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:45,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940448369] [2024-11-16 08:31:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940448369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:31:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011371165] [2024-11-16 08:31:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:45,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:31:45,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:31:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:45,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:31:45,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:31:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:45,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:31:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011371165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:31:45,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:31:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:31:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713857188] [2024-11-16 08:31:45,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:31:45,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:31:45,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:31:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:31:45,780 INFO L87 Difference]: Start difference. First operand 45059 states and 60103 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:46,322 INFO L93 Difference]: Finished difference Result 109126 states and 146826 transitions. [2024-11-16 08:31:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:31:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 72 [2024-11-16 08:31:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:46,406 INFO L225 Difference]: With dead ends: 109126 [2024-11-16 08:31:46,406 INFO L226 Difference]: Without dead ends: 78195 [2024-11-16 08:31:46,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:31:46,436 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 952 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:46,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 385 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:31:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78195 states. [2024-11-16 08:31:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78195 to 53821. [2024-11-16 08:31:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53821 states, 53820 states have (on average 1.3363247863247862) internal successors, (71921), 53820 states have internal predecessors, (71921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53821 states to 53821 states and 71921 transitions. [2024-11-16 08:31:47,363 INFO L78 Accepts]: Start accepts. Automaton has 53821 states and 71921 transitions. Word has length 72 [2024-11-16 08:31:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:47,363 INFO L471 AbstractCegarLoop]: Abstraction has 53821 states and 71921 transitions. [2024-11-16 08:31:47,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 53821 states and 71921 transitions. [2024-11-16 08:31:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:31:47,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:47,367 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:47,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:31:47,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 08:31:47,568 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 411013550, now seen corresponding path program 1 times [2024-11-16 08:31:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98676592] [2024-11-16 08:31:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:47,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98676592] [2024-11-16 08:31:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98676592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:31:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233442106] [2024-11-16 08:31:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:47,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:47,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:31:47,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:31:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:47,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:31:47,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:31:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:48,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:31:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:48,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233442106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:31:48,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:31:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:31:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871065701] [2024-11-16 08:31:48,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:31:48,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:31:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:31:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:31:48,441 INFO L87 Difference]: Start difference. First operand 53821 states and 71921 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:48,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:48,875 INFO L93 Difference]: Finished difference Result 104542 states and 140213 transitions. [2024-11-16 08:31:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:31:48,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 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 72 [2024-11-16 08:31:48,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:48,966 INFO L225 Difference]: With dead ends: 104542 [2024-11-16 08:31:48,966 INFO L226 Difference]: Without dead ends: 71964 [2024-11-16 08:31:49,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:31:49,006 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 567 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:49,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 320 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:31:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71964 states. [2024-11-16 08:31:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71964 to 59377. [2024-11-16 08:31:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59377 states, 59376 states have (on average 1.33577539746699) internal successors, (79313), 59376 states have internal predecessors, (79313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59377 states to 59377 states and 79313 transitions. [2024-11-16 08:31:49,828 INFO L78 Accepts]: Start accepts. Automaton has 59377 states and 79313 transitions. Word has length 72 [2024-11-16 08:31:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:49,829 INFO L471 AbstractCegarLoop]: Abstraction has 59377 states and 79313 transitions. [2024-11-16 08:31:49,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 59377 states and 79313 transitions. [2024-11-16 08:31:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 08:31:49,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:49,833 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:31:49,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:31:50,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:50,034 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:50,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1842140807, now seen corresponding path program 1 times [2024-11-16 08:31:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385411292] [2024-11-16 08:31:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:50,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:50,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385411292] [2024-11-16 08:31:50,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385411292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:31:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872502087] [2024-11-16 08:31:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:50,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:50,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:31:50,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:31:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:50,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:31:50,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:31:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:50,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:31:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:50,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872502087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:31:50,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:31:50,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:31:50,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519133396] [2024-11-16 08:31:50,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:31:50,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:31:50,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:31:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:31:50,431 INFO L87 Difference]: Start difference. First operand 59377 states and 79313 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:31:51,218 INFO L93 Difference]: Finished difference Result 117598 states and 156720 transitions. [2024-11-16 08:31:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:31:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 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 73 [2024-11-16 08:31:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:31:51,299 INFO L225 Difference]: With dead ends: 117598 [2024-11-16 08:31:51,300 INFO L226 Difference]: Without dead ends: 72571 [2024-11-16 08:31:51,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:31:51,334 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 948 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:31:51,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 233 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:31:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72571 states. [2024-11-16 08:31:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72571 to 60647. [2024-11-16 08:31:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60647 states, 60646 states have (on average 1.329815651485671) internal successors, (80648), 60646 states have internal predecessors, (80648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60647 states to 60647 states and 80648 transitions. [2024-11-16 08:31:52,300 INFO L78 Accepts]: Start accepts. Automaton has 60647 states and 80648 transitions. Word has length 73 [2024-11-16 08:31:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:31:52,301 INFO L471 AbstractCegarLoop]: Abstraction has 60647 states and 80648 transitions. [2024-11-16 08:31:52,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:31:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 60647 states and 80648 transitions. [2024-11-16 08:31:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 08:31:52,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:31:52,306 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:31:52,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 08:31:52,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 08:31:52,507 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:31:52,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:31:52,508 INFO L85 PathProgramCache]: Analyzing trace with hash -225139120, now seen corresponding path program 1 times [2024-11-16 08:31:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:31:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296887460] [2024-11-16 08:31:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:52,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:31:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:31:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296887460] [2024-11-16 08:31:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296887460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:31:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660206923] [2024-11-16 08:31:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:31:52,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:31:52,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:31:52,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:31:52,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 08:31:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:31:52,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 08:31:52,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:31:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:55,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:31:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:31:56,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660206923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:31:56,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:31:56,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 18] total 40 [2024-11-16 08:31:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45615027] [2024-11-16 08:31:56,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:31:56,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 08:31:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:31:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 08:31:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 08:31:56,796 INFO L87 Difference]: Start difference. First operand 60647 states and 80648 transitions. Second operand has 40 states, 40 states have (on average 5.025) internal successors, (201), 40 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:32:18,043 INFO L93 Difference]: Finished difference Result 653670 states and 865118 transitions. [2024-11-16 08:32:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-16 08:32:18,044 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.025) internal successors, (201), 40 states have internal predecessors, (201), 0 states have call successors, (0), 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 74 [2024-11-16 08:32:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:32:19,504 INFO L225 Difference]: With dead ends: 653670 [2024-11-16 08:32:19,506 INFO L226 Difference]: Without dead ends: 593065 [2024-11-16 08:32:19,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43762 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=19681, Invalid=80491, Unknown=0, NotChecked=0, Total=100172 [2024-11-16 08:32:19,645 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 12252 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 7957 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12252 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 8267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 7957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:32:19,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12252 Valid, 5671 Invalid, 8267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 7957 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-16 08:32:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593065 states. [2024-11-16 08:32:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593065 to 223963. [2024-11-16 08:32:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223963 states, 223962 states have (on average 1.3245014779292916) internal successors, (296638), 223962 states have internal predecessors, (296638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223963 states to 223963 states and 296638 transitions. [2024-11-16 08:32:25,232 INFO L78 Accepts]: Start accepts. Automaton has 223963 states and 296638 transitions. Word has length 74 [2024-11-16 08:32:25,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:32:25,232 INFO L471 AbstractCegarLoop]: Abstraction has 223963 states and 296638 transitions. [2024-11-16 08:32:25,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.025) internal successors, (201), 40 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 223963 states and 296638 transitions. [2024-11-16 08:32:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 08:32:25,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:32:25,238 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:32:25,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 08:32:25,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:32:25,439 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:32:25,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:32:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash -468780392, now seen corresponding path program 1 times [2024-11-16 08:32:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:32:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298745669] [2024-11-16 08:32:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:32:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:32:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:32:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 08:32:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:32:25,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298745669] [2024-11-16 08:32:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298745669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:32:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:32:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:32:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973162339] [2024-11-16 08:32:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:32:25,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:32:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:32:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:32:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:32:25,471 INFO L87 Difference]: Start difference. First operand 223963 states and 296638 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:32:26,939 INFO L93 Difference]: Finished difference Result 426085 states and 564948 transitions. [2024-11-16 08:32:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:32:26,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 08:32:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:32:27,233 INFO L225 Difference]: With dead ends: 426085 [2024-11-16 08:32:27,233 INFO L226 Difference]: Without dead ends: 205901 [2024-11-16 08:32:27,341 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 [2024-11-16 08:32:27,343 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 89 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:32:27,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 134 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:32:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205901 states. [2024-11-16 08:32:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205901 to 203452. [2024-11-16 08:32:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203452 states, 203451 states have (on average 1.3073663928906714) internal successors, (265985), 203451 states have internal predecessors, (265985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203452 states to 203452 states and 265985 transitions. [2024-11-16 08:32:30,706 INFO L78 Accepts]: Start accepts. Automaton has 203452 states and 265985 transitions. Word has length 75 [2024-11-16 08:32:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:32:30,706 INFO L471 AbstractCegarLoop]: Abstraction has 203452 states and 265985 transitions. [2024-11-16 08:32:30,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 203452 states and 265985 transitions. [2024-11-16 08:32:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 08:32:30,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:32:30,712 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:32:30,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 08:32:30,713 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:32:30,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:32:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1612782036, now seen corresponding path program 1 times [2024-11-16 08:32:30,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:32:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641559248] [2024-11-16 08:32:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:32:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:32:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:32:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 08:32:30,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:32:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641559248] [2024-11-16 08:32:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641559248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:32:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:32:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:32:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827091740] [2024-11-16 08:32:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:32:30,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:32:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:32:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:32:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:32:30,746 INFO L87 Difference]: Start difference. First operand 203452 states and 265985 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:32,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:32:32,239 INFO L93 Difference]: Finished difference Result 383436 states and 501973 transitions. [2024-11-16 08:32:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:32:32,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 75 [2024-11-16 08:32:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:32:32,524 INFO L225 Difference]: With dead ends: 383436 [2024-11-16 08:32:32,524 INFO L226 Difference]: Without dead ends: 181103 [2024-11-16 08:32:32,610 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 [2024-11-16 08:32:32,610 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 94 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:32:32,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 141 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:32:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181103 states. [2024-11-16 08:32:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181103 to 177346. [2024-11-16 08:32:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177346 states, 177345 states have (on average 1.2939299106261806) internal successors, (229472), 177345 states have internal predecessors, (229472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177346 states to 177346 states and 229472 transitions. [2024-11-16 08:32:35,315 INFO L78 Accepts]: Start accepts. Automaton has 177346 states and 229472 transitions. Word has length 75 [2024-11-16 08:32:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:32:35,315 INFO L471 AbstractCegarLoop]: Abstraction has 177346 states and 229472 transitions. [2024-11-16 08:32:35,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 177346 states and 229472 transitions. [2024-11-16 08:32:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:32:35,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:32:35,319 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:32:35,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 08:32:35,320 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:32:35,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:32:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1518304366, now seen corresponding path program 1 times [2024-11-16 08:32:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:32:35,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399441883] [2024-11-16 08:32:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:32:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:32:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:32:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:32:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:32:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399441883] [2024-11-16 08:32:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399441883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:32:35,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:32:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:32:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309531173] [2024-11-16 08:32:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:32:35,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:32:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:32:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:32:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:32:35,355 INFO L87 Difference]: Start difference. First operand 177346 states and 229472 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:32:36,889 INFO L93 Difference]: Finished difference Result 380580 states and 491604 transitions. [2024-11-16 08:32:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:32:36,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 76 [2024-11-16 08:32:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:32:37,336 INFO L225 Difference]: With dead ends: 380580 [2024-11-16 08:32:37,336 INFO L226 Difference]: Without dead ends: 333332 [2024-11-16 08:32:37,441 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 [2024-11-16 08:32:37,443 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 75 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:32:37,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 210 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:32:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333332 states. [2024-11-16 08:32:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333332 to 203646. [2024-11-16 08:32:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203646 states, 203645 states have (on average 1.2876672641115667) internal successors, (262227), 203645 states have internal predecessors, (262227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203646 states to 203646 states and 262227 transitions. [2024-11-16 08:32:41,434 INFO L78 Accepts]: Start accepts. Automaton has 203646 states and 262227 transitions. Word has length 76 [2024-11-16 08:32:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:32:41,435 INFO L471 AbstractCegarLoop]: Abstraction has 203646 states and 262227 transitions. [2024-11-16 08:32:41,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 203646 states and 262227 transitions. [2024-11-16 08:32:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 08:32:41,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:32:41,439 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:32:41,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 08:32:41,439 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:32:41,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:32:41,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1873365241, now seen corresponding path program 1 times [2024-11-16 08:32:41,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:32:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374115581] [2024-11-16 08:32:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:32:41,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:32:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:32:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:32:41,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:32:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374115581] [2024-11-16 08:32:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374115581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:32:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:32:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:32:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278730167] [2024-11-16 08:32:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:32:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:32:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:32:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:32:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:32:41,491 INFO L87 Difference]: Start difference. First operand 203646 states and 262227 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:32:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:32:43,075 INFO L93 Difference]: Finished difference Result 403782 states and 520269 transitions. [2024-11-16 08:32:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:32:43,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 08:32:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:32:43,361 INFO L225 Difference]: With dead ends: 403782 [2024-11-16 08:32:43,361 INFO L226 Difference]: Without dead ends: 201680 [2024-11-16 08:32:43,452 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 [2024-11-16 08:32:43,454 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 57 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:32:43,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 260 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:32:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201680 states.