./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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.4.1.ufo.BOUNDED-8.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 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:31:28,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:31:28,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:31:28,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:31:28,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:31:28,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:31:28,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:31:28,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:31:28,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:31:28,482 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:31:28,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:31:28,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:31:28,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:31:28,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:31:28,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:31:28,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:31:28,484 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 160554c42c564a52ebd5fe8cd6d07ff66d908df6432eaaa8c30073c4760a7967 [2025-03-16 19:31:28,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:31:28,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:31:28,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:31:28,709 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:31:28,709 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:31:28,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2025-03-16 19:31:29,858 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea098b5d6/8d7f525660004522844cf970c3e8f777/FLAGb8c176aa0 [2025-03-16 19:31:30,085 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:31:30,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2025-03-16 19:31:30,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea098b5d6/8d7f525660004522844cf970c3e8f777/FLAGb8c176aa0 [2025-03-16 19:31:30,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea098b5d6/8d7f525660004522844cf970c3e8f777 [2025-03-16 19:31:30,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:31:30,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:31:30,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:31:30,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:31:30,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:31:30,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526c2332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30, skipping insertion in model container [2025-03-16 19:31:30,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:31:30,272 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2025-03-16 19:31:30,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:31:30,301 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:31:30,322 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.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[4902,4915] [2025-03-16 19:31:30,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:31:30,345 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:31:30,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30 WrapperNode [2025-03-16 19:31:30,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:31:30,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:31:30,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:31:30,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:31:30,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,376 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 375 [2025-03-16 19:31:30,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:31:30,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:31:30,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:31:30,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:31:30,386 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,397 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]. [2025-03-16 19:31:30,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,403 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:31:30,407 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:31:30,407 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:31:30,407 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:31:30,411 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (1/1) ... [2025-03-16 19:31:30,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:31:30,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:31:30,433 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) [2025-03-16 19:31:30,435 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 [2025-03-16 19:31:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:31:30,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:31:30,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:31:30,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:31:30,528 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:31:30,529 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:31:30,795 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L184: havoc main_~node3__m3~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L308: havoc main_~node4____CPAchecker_TMP_0~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L169: havoc main_~node2__m2~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L153: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L353: havoc main_~node3____CPAchecker_TMP_0~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L444: havoc main_~node1____CPAchecker_TMP_0~0#1; [2025-03-16 19:31:30,796 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L248: havoc main_~main____CPAchecker_TMP_0~0#1;havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2025-03-16 19:31:30,797 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L199: havoc main_~node4__m4~0#1; [2025-03-16 19:31:30,797 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L398: havoc main_~node2____CPAchecker_TMP_0~0#1; [2025-03-16 19:31:30,818 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2025-03-16 19:31:30,818 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:31:30,826 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:31:30,828 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:31:30,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:31:30 BoogieIcfgContainer [2025-03-16 19:31:30,829 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:31:30,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:31:30,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:31:30,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:31:30,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:31:30" (1/3) ... [2025-03-16 19:31:30,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60722335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:31:30, skipping insertion in model container [2025-03-16 19:31:30,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:31:30" (2/3) ... [2025-03-16 19:31:30,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60722335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:31:30, skipping insertion in model container [2025-03-16 19:31:30,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:31:30" (3/3) ... [2025-03-16 19:31:30,835 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2025-03-16 19:31:30,845 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:31:30,847 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c that has 1 procedures, 78 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-16 19:31:30,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:31:30,900 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;@4c55a686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:31:30,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:31:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.736842105263158) internal successors, (132), 77 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-16 19:31:30,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:30,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:30,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:30,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash -7457569, now seen corresponding path program 1 times [2025-03-16 19:31:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206935767] [2025-03-16 19:31:30,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:30,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-16 19:31:31,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-16 19:31:31,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:31,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206935767] [2025-03-16 19:31:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206935767] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:31:31,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831113902] [2025-03-16 19:31:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:31,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:31:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:31,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:31:31,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:31:31,253 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.736842105263158) internal successors, (132), 77 states have internal predecessors, (132), 0 states have call successors, (0), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:31,288 INFO L93 Difference]: Finished difference Result 176 states and 285 transitions. [2025-03-16 19:31:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:31:31,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2025-03-16 19:31:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:31,295 INFO L225 Difference]: With dead ends: 176 [2025-03-16 19:31:31,295 INFO L226 Difference]: Without dead ends: 117 [2025-03-16 19:31:31,297 INFO L434 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 [2025-03-16 19:31:31,298 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 91 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:31,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-16 19:31:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2025-03-16 19:31:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4736842105263157) internal successors, (168), 114 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2025-03-16 19:31:31,321 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 46 [2025-03-16 19:31:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:31,321 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2025-03-16 19:31:31,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2025-03-16 19:31:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-16 19:31:31,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:31,322 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:31,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:31:31,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:31,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash -607945416, now seen corresponding path program 1 times [2025-03-16 19:31:31,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532806783] [2025-03-16 19:31:31,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:31,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:31,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-16 19:31:31,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-16 19:31:31,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:31,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:31,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532806783] [2025-03-16 19:31:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532806783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:31,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:31,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:31:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900789445] [2025-03-16 19:31:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:31,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:31:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:31,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:31:31,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:31:31,428 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:31,450 INFO L93 Difference]: Finished difference Result 279 states and 428 transitions. [2025-03-16 19:31:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:31:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2025-03-16 19:31:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:31,452 INFO L225 Difference]: With dead ends: 279 [2025-03-16 19:31:31,452 INFO L226 Difference]: Without dead ends: 189 [2025-03-16 19:31:31,452 INFO L434 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 [2025-03-16 19:31:31,453 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:31,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 236 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-03-16 19:31:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2025-03-16 19:31:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.5161290322580645) internal successors, (282), 186 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 282 transitions. [2025-03-16 19:31:31,461 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 282 transitions. Word has length 47 [2025-03-16 19:31:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:31,461 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 282 transitions. [2025-03-16 19:31:31,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 282 transitions. [2025-03-16 19:31:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-16 19:31:31,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:31,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:31,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:31:31,462 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:31,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash -955654996, now seen corresponding path program 1 times [2025-03-16 19:31:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:31,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349513331] [2025-03-16 19:31:31,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:31,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-16 19:31:31,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-16 19:31:31,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:31,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:31,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349513331] [2025-03-16 19:31:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349513331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:31,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:31:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672420538] [2025-03-16 19:31:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:31,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:31:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:31,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:31:31,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:31:31,544 INFO L87 Difference]: Start difference. First operand 187 states and 282 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:31,564 INFO L93 Difference]: Finished difference Result 479 states and 744 transitions. [2025-03-16 19:31:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:31:31,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2025-03-16 19:31:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:31,568 INFO L225 Difference]: With dead ends: 479 [2025-03-16 19:31:31,570 INFO L226 Difference]: Without dead ends: 317 [2025-03-16 19:31:31,570 INFO L434 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 [2025-03-16 19:31:31,571 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:31,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 232 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-03-16 19:31:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 315. [2025-03-16 19:31:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.535031847133758) internal successors, (482), 314 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 482 transitions. [2025-03-16 19:31:31,598 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 482 transitions. Word has length 48 [2025-03-16 19:31:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:31,598 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 482 transitions. [2025-03-16 19:31:31,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 482 transitions. [2025-03-16 19:31:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-16 19:31:31,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:31,599 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:31:31,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:31,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:31,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1616733925, now seen corresponding path program 1 times [2025-03-16 19:31:31,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:31,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4138420] [2025-03-16 19:31:31,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:31,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-16 19:31:31,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-16 19:31:31,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:31,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4138420] [2025-03-16 19:31:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4138420] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:31:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036466881] [2025-03-16 19:31:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:31,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:31:31,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:31,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:31:31,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:31:31,684 INFO L87 Difference]: Start difference. First operand 315 states and 482 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:31,696 INFO L93 Difference]: Finished difference Result 831 states and 1292 transitions. [2025-03-16 19:31:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:31:31,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-03-16 19:31:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:31,698 INFO L225 Difference]: With dead ends: 831 [2025-03-16 19:31:31,698 INFO L226 Difference]: Without dead ends: 541 [2025-03-16 19:31:31,699 INFO L434 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 [2025-03-16 19:31:31,699 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:31,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-16 19:31:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2025-03-16 19:31:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5353159851301115) internal successors, (826), 538 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 826 transitions. [2025-03-16 19:31:31,724 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 826 transitions. Word has length 49 [2025-03-16 19:31:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:31,724 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 826 transitions. [2025-03-16 19:31:31,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 826 transitions. [2025-03-16 19:31:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-16 19:31:31,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:31,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:31,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:31:31,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:31,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash 364363129, now seen corresponding path program 1 times [2025-03-16 19:31:31,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:31,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975468440] [2025-03-16 19:31:31,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:31,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:31,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-16 19:31:31,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-16 19:31:31,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:31,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:31,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:31,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975468440] [2025-03-16 19:31:31,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975468440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:31,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:31,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637646161] [2025-03-16 19:31:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:31,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:31,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:31,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:31,852 INFO L87 Difference]: Start difference. First operand 539 states and 826 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:31,997 INFO L93 Difference]: Finished difference Result 4651 states and 7234 transitions. [2025-03-16 19:31:31,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:31:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2025-03-16 19:31:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:32,011 INFO L225 Difference]: With dead ends: 4651 [2025-03-16 19:31:32,011 INFO L226 Difference]: Without dead ends: 4137 [2025-03-16 19:31:32,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-16 19:31:32,013 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 683 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:32,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 897 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:31:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2025-03-16 19:31:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 1051. [2025-03-16 19:31:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.5180952380952382) internal successors, (1594), 1050 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1594 transitions. [2025-03-16 19:31:32,076 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1594 transitions. Word has length 50 [2025-03-16 19:31:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:32,076 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1594 transitions. [2025-03-16 19:31:32,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1594 transitions. [2025-03-16 19:31:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-16 19:31:32,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:32,077 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:32,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:31:32,077 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:32,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1995467838, now seen corresponding path program 1 times [2025-03-16 19:31:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:32,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886605928] [2025-03-16 19:31:32,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:32,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:32,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-16 19:31:32,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-16 19:31:32,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:32,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:32,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:32,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886605928] [2025-03-16 19:31:32,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886605928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:32,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:32,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:31:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481692284] [2025-03-16 19:31:32,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:32,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:31:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:32,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:31:32,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:31:32,169 INFO L87 Difference]: Start difference. First operand 1051 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:32,191 INFO L93 Difference]: Finished difference Result 2569 states and 3910 transitions. [2025-03-16 19:31:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:31:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2025-03-16 19:31:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:32,195 INFO L225 Difference]: With dead ends: 2569 [2025-03-16 19:31:32,195 INFO L226 Difference]: Without dead ends: 1543 [2025-03-16 19:31:32,196 INFO L434 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 [2025-03-16 19:31:32,199 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:32,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2025-03-16 19:31:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2025-03-16 19:31:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.5038961038961038) internal successors, (2316), 1540 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2316 transitions. [2025-03-16 19:31:32,230 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2316 transitions. Word has length 52 [2025-03-16 19:31:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:32,231 INFO L471 AbstractCegarLoop]: Abstraction has 1541 states and 2316 transitions. [2025-03-16 19:31:32,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2316 transitions. [2025-03-16 19:31:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-16 19:31:32,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:32,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:32,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:31:32,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:32,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1994305989, now seen corresponding path program 1 times [2025-03-16 19:31:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:32,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350734410] [2025-03-16 19:31:32,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:32,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:32,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-16 19:31:32,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-16 19:31:32,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:32,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:32,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350734410] [2025-03-16 19:31:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350734410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095018031] [2025-03-16 19:31:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:32,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:32,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:32,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:32,479 INFO L87 Difference]: Start difference. First operand 1541 states and 2316 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:32,565 INFO L93 Difference]: Finished difference Result 3057 states and 4606 transitions. [2025-03-16 19:31:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:31:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2025-03-16 19:31:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:32,569 INFO L225 Difference]: With dead ends: 3057 [2025-03-16 19:31:32,570 INFO L226 Difference]: Without dead ends: 1543 [2025-03-16 19:31:32,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2025-03-16 19:31:32,572 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 159 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:32,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 323 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2025-03-16 19:31:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2025-03-16 19:31:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4883116883116883) internal successors, (2292), 1540 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2292 transitions. [2025-03-16 19:31:32,592 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2292 transitions. Word has length 52 [2025-03-16 19:31:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:32,592 INFO L471 AbstractCegarLoop]: Abstraction has 1541 states and 2292 transitions. [2025-03-16 19:31:32,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2292 transitions. [2025-03-16 19:31:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-16 19:31:32,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:32,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:32,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:31:32,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:32,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1692988147, now seen corresponding path program 1 times [2025-03-16 19:31:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162755265] [2025-03-16 19:31:32,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:32,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-16 19:31:32,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-16 19:31:32,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:32,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162755265] [2025-03-16 19:31:32,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162755265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:32,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:32,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:31:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178361172] [2025-03-16 19:31:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:32,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:31:32,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:32,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:31:32,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:31:32,791 INFO L87 Difference]: Start difference. First operand 1541 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:32,818 INFO L93 Difference]: Finished difference Result 1607 states and 2389 transitions. [2025-03-16 19:31:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 19:31:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-16 19:31:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:32,823 INFO L225 Difference]: With dead ends: 1607 [2025-03-16 19:31:32,824 INFO L226 Difference]: Without dead ends: 1605 [2025-03-16 19:31:32,824 INFO L434 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 [2025-03-16 19:31:32,825 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:32,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2025-03-16 19:31:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1605. [2025-03-16 19:31:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 1.4638403990024937) internal successors, (2348), 1604 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 2348 transitions. [2025-03-16 19:31:32,854 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 2348 transitions. Word has length 53 [2025-03-16 19:31:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:32,855 INFO L471 AbstractCegarLoop]: Abstraction has 1605 states and 2348 transitions. [2025-03-16 19:31:32,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 2348 transitions. [2025-03-16 19:31:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 19:31:32,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:32,859 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:32,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:31:32,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:32,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash -352889149, now seen corresponding path program 1 times [2025-03-16 19:31:32,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:32,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15921242] [2025-03-16 19:31:32,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:32,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 19:31:32,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 19:31:32,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:32,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:31:32,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15921242] [2025-03-16 19:31:32,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15921242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:32,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:32,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239149103] [2025-03-16 19:31:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:32,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:32,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:32,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:32,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:32,992 INFO L87 Difference]: Start difference. First operand 1605 states and 2348 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2025-03-16 19:31:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:33,083 INFO L93 Difference]: Finished difference Result 8223 states and 12057 transitions. [2025-03-16 19:31:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:31:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 75 [2025-03-16 19:31:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:33,100 INFO L225 Difference]: With dead ends: 8223 [2025-03-16 19:31:33,100 INFO L226 Difference]: Without dead ends: 6645 [2025-03-16 19:31:33,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:31:33,104 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 440 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:33,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 615 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2025-03-16 19:31:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 3181. [2025-03-16 19:31:33,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 3180 states have (on average 1.460377358490566) internal successors, (4644), 3180 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4644 transitions. [2025-03-16 19:31:33,182 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4644 transitions. Word has length 75 [2025-03-16 19:31:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:33,183 INFO L471 AbstractCegarLoop]: Abstraction has 3181 states and 4644 transitions. [2025-03-16 19:31:33,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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) [2025-03-16 19:31:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4644 transitions. [2025-03-16 19:31:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 19:31:33,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:33,184 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:31:33,185 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1798830691, now seen corresponding path program 1 times [2025-03-16 19:31:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953677133] [2025-03-16 19:31:33,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:33,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 19:31:33,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 19:31:33,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:33,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 19:31:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953677133] [2025-03-16 19:31:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953677133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:33,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617206040] [2025-03-16 19:31:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:33,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:33,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:33,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:33,295 INFO L87 Difference]: Start difference. First operand 3181 states and 4644 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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) [2025-03-16 19:31:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:33,381 INFO L93 Difference]: Finished difference Result 9799 states and 14353 transitions. [2025-03-16 19:31:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:31:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 [2025-03-16 19:31:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:33,400 INFO L225 Difference]: With dead ends: 9799 [2025-03-16 19:31:33,400 INFO L226 Difference]: Without dead ends: 8221 [2025-03-16 19:31:33,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:31:33,404 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 469 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:33,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 575 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:31:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2025-03-16 19:31:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 5549. [2025-03-16 19:31:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5548 states have (on average 1.4542177361211248) internal successors, (8068), 5548 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 8068 transitions. [2025-03-16 19:31:33,487 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 8068 transitions. Word has length 75 [2025-03-16 19:31:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:33,487 INFO L471 AbstractCegarLoop]: Abstraction has 5549 states and 8068 transitions. [2025-03-16 19:31:33,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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) [2025-03-16 19:31:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 8068 transitions. [2025-03-16 19:31:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 19:31:33,489 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:33,489 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:33,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:31:33,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:33,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:33,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2006674947, now seen corresponding path program 1 times [2025-03-16 19:31:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008141387] [2025-03-16 19:31:33,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:33,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 19:31:33,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 19:31:33,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:33,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 19:31:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008141387] [2025-03-16 19:31:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008141387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:33,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926378742] [2025-03-16 19:31:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:33,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:33,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:33,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:33,590 INFO L87 Difference]: Start difference. First operand 5549 states and 8068 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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) [2025-03-16 19:31:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:33,684 INFO L93 Difference]: Finished difference Result 11375 states and 16649 transitions. [2025-03-16 19:31:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:31:33,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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 [2025-03-16 19:31:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:33,708 INFO L225 Difference]: With dead ends: 11375 [2025-03-16 19:31:33,710 INFO L226 Difference]: Without dead ends: 9797 [2025-03-16 19:31:33,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:31:33,715 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 448 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:33,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 611 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:31:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2025-03-16 19:31:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 7125. [2025-03-16 19:31:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7125 states, 7124 states have (on average 1.454800673778776) internal successors, (10364), 7124 states have internal predecessors, (10364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 10364 transitions. [2025-03-16 19:31:33,823 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 10364 transitions. Word has length 75 [2025-03-16 19:31:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:33,823 INFO L471 AbstractCegarLoop]: Abstraction has 7125 states and 10364 transitions. [2025-03-16 19:31:33,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 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) [2025-03-16 19:31:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 10364 transitions. [2025-03-16 19:31:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 19:31:33,825 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:33,825 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:33,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:31:33,826 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:33,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1997438173, now seen corresponding path program 1 times [2025-03-16 19:31:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846565101] [2025-03-16 19:31:33,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:33,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:33,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 19:31:33,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 19:31:33,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:33,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 19:31:33,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:33,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846565101] [2025-03-16 19:31:33,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846565101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:31:33,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:31:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:31:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832689296] [2025-03-16 19:31:33,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:31:33,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:31:33,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:33,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:31:33,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:31:33,926 INFO L87 Difference]: Start difference. First operand 7125 states and 10364 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:34,037 INFO L93 Difference]: Finished difference Result 11975 states and 17537 transitions. [2025-03-16 19:31:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:31:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 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 [2025-03-16 19:31:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:34,054 INFO L225 Difference]: With dead ends: 11975 [2025-03-16 19:31:34,054 INFO L226 Difference]: Without dead ends: 10885 [2025-03-16 19:31:34,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:31:34,059 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 437 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:34,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 696 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:31:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2025-03-16 19:31:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 8213. [2025-03-16 19:31:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 8212 states have (on average 1.4568923526546518) internal successors, (11964), 8212 states have internal predecessors, (11964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 11964 transitions. [2025-03-16 19:31:34,195 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 11964 transitions. Word has length 75 [2025-03-16 19:31:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:34,195 INFO L471 AbstractCegarLoop]: Abstraction has 8213 states and 11964 transitions. [2025-03-16 19:31:34,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 11964 transitions. [2025-03-16 19:31:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-16 19:31:34,196 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:34,196 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:34,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:31:34,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:34,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1382137256, now seen corresponding path program 1 times [2025-03-16 19:31:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:34,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110785973] [2025-03-16 19:31:34,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:34,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 19:31:34,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 19:31:34,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:34,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 19:31:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110785973] [2025-03-16 19:31:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110785973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:31:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643637541] [2025-03-16 19:31:34,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:34,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:31:34,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:31:34,310 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) [2025-03-16 19:31:34,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:31:34,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-16 19:31:34,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-16 19:31:34,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:34,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:34,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 19:31:34,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:31:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:34,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:31:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643637541] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:31:35,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:31:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2025-03-16 19:31:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256093178] [2025-03-16 19:31:35,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:31:35,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:31:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:35,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:31:35,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:31:35,064 INFO L87 Difference]: Start difference. First operand 8213 states and 11964 transitions. Second operand has 10 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:35,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:35,191 INFO L93 Difference]: Finished difference Result 22762 states and 33365 transitions. [2025-03-16 19:31:35,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:31:35,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 0 states have call successors, (0), 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 [2025-03-16 19:31:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:35,215 INFO L225 Difference]: With dead ends: 22762 [2025-03-16 19:31:35,216 INFO L226 Difference]: Without dead ends: 14576 [2025-03-16 19:31:35,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=72, Unknown=0, NotChecked=0, Total=132 [2025-03-16 19:31:35,227 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 451 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:35,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 503 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:31:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14576 states. [2025-03-16 19:31:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14576 to 14568. [2025-03-16 19:31:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14568 states, 14567 states have (on average 1.4378389510537517) internal successors, (20945), 14567 states have internal predecessors, (20945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14568 states to 14568 states and 20945 transitions. [2025-03-16 19:31:35,414 INFO L78 Accepts]: Start accepts. Automaton has 14568 states and 20945 transitions. Word has length 76 [2025-03-16 19:31:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:35,414 INFO L471 AbstractCegarLoop]: Abstraction has 14568 states and 20945 transitions. [2025-03-16 19:31:35,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 14568 states and 20945 transitions. [2025-03-16 19:31:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 19:31:35,415 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:35,415 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:35,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 19:31:35,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 19:31:35,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:35,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1266738721, now seen corresponding path program 1 times [2025-03-16 19:31:35,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:35,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389669973] [2025-03-16 19:31:35,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:35,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:31:35,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:31:35,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:35,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:35,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:35,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389669973] [2025-03-16 19:31:35,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389669973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:31:35,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355954518] [2025-03-16 19:31:35,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:31:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:31:36,000 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) [2025-03-16 19:31:36,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:31:36,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:31:36,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:31:36,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:36,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:36,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 19:31:36,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:31:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:36,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:31:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:37,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355954518] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:31:37,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:31:37,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2025-03-16 19:31:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074416182] [2025-03-16 19:31:37,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:31:37,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-16 19:31:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:37,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-16 19:31:37,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2025-03-16 19:31:37,082 INFO L87 Difference]: Start difference. First operand 14568 states and 20945 transitions. Second operand has 27 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:41,192 INFO L93 Difference]: Finished difference Result 163873 states and 232311 transitions. [2025-03-16 19:31:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2025-03-16 19:31:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 0 states have call successors, (0), 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 [2025-03-16 19:31:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:41,527 INFO L225 Difference]: With dead ends: 163873 [2025-03-16 19:31:41,527 INFO L226 Difference]: Without dead ends: 149346 [2025-03-16 19:31:41,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8328 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3238, Invalid=18814, Unknown=0, NotChecked=0, Total=22052 [2025-03-16 19:31:41,565 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 2558 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:41,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 1685 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 19:31:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149346 states. [2025-03-16 19:31:42,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149346 to 72093. [2025-03-16 19:31:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72093 states, 72092 states have (on average 1.4077567552571715) internal successors, (101488), 72092 states have internal predecessors, (101488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:42,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72093 states to 72093 states and 101488 transitions. [2025-03-16 19:31:42,693 INFO L78 Accepts]: Start accepts. Automaton has 72093 states and 101488 transitions. Word has length 77 [2025-03-16 19:31:42,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:42,694 INFO L471 AbstractCegarLoop]: Abstraction has 72093 states and 101488 transitions. [2025-03-16 19:31:42,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 72093 states and 101488 transitions. [2025-03-16 19:31:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-16 19:31:42,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:42,696 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:42,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 19:31:42,900 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,SelfDestructingSolverStorable13 [2025-03-16 19:31:42,900 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash -922541601, now seen corresponding path program 1 times [2025-03-16 19:31:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372146852] [2025-03-16 19:31:42,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:42,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:31:42,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:31:42,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:42,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:43,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372146852] [2025-03-16 19:31:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372146852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:31:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653609841] [2025-03-16 19:31:43,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:43,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:31:43,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:31:43,166 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) [2025-03-16 19:31:43,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 19:31:43,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-16 19:31:43,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-16 19:31:43,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:43,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:43,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 19:31:43,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:31:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:43,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:31:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653609841] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:31:44,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:31:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2025-03-16 19:31:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263171658] [2025-03-16 19:31:44,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:31:44,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-16 19:31:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:31:44,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-16 19:31:44,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2025-03-16 19:31:44,354 INFO L87 Difference]: Start difference. First operand 72093 states and 101488 transitions. Second operand has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:31:46,168 INFO L93 Difference]: Finished difference Result 542235 states and 764718 transitions. [2025-03-16 19:31:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-16 19:31:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 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 [2025-03-16 19:31:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:31:46,890 INFO L225 Difference]: With dead ends: 542235 [2025-03-16 19:31:46,890 INFO L226 Difference]: Without dead ends: 470171 [2025-03-16 19:31:47,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=557, Invalid=1893, Unknown=0, NotChecked=0, Total=2450 [2025-03-16 19:31:47,039 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 2108 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:31:47,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 1080 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:31:47,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470171 states. [2025-03-16 19:31:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470171 to 238590. [2025-03-16 19:31:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238590 states, 238589 states have (on average 1.3938823667478384) internal successors, (332565), 238589 states have internal predecessors, (332565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238590 states to 238590 states and 332565 transitions. [2025-03-16 19:31:51,822 INFO L78 Accepts]: Start accepts. Automaton has 238590 states and 332565 transitions. Word has length 77 [2025-03-16 19:31:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:31:51,823 INFO L471 AbstractCegarLoop]: Abstraction has 238590 states and 332565 transitions. [2025-03-16 19:31:51,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:31:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 238590 states and 332565 transitions. [2025-03-16 19:31:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-16 19:31:51,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:31:51,826 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:31:51,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 19:31:52,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:31:52,027 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:31:52,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:31:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1179551096, now seen corresponding path program 1 times [2025-03-16 19:31:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:31:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450466913] [2025-03-16 19:31:52,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:31:52,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 19:31:52,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 19:31:52,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:52,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:31:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:31:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450466913] [2025-03-16 19:31:52,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450466913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:31:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465928414] [2025-03-16 19:31:52,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:31:52,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:31:52,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:31:52,254 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) [2025-03-16 19:31:52,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 19:31:52,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 19:31:52,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 19:31:52,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:31:52,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:31:52,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-16 19:31:52,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:32:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:32:01,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 19:32:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:32:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465928414] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 19:32:02,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 19:32:02,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 21, 24] total 51 [2025-03-16 19:32:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194811756] [2025-03-16 19:32:02,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 19:32:02,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-16 19:32:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:32:02,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-16 19:32:02,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2306, Unknown=0, NotChecked=0, Total=2652 [2025-03-16 19:32:02,892 INFO L87 Difference]: Start difference. First operand 238590 states and 332565 transitions. Second operand has 52 states, 52 states have (on average 4.153846153846154) internal successors, (216), 51 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)