./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:49:23,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:49:23,819 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 20:49:23,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:49:23,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:49:23,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:49:23,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:49:23,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:49:23,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:49:23,843 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:49:23,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:49:23,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:49:23,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:49:23,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:49:23,843 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:49:23,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:49:23,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:49:23,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:49:23,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:49:23,846 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:49:23,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:49:23,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:49:23,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:49:23,847 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 [2025-03-16 20:49:24,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:49:24,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:49:24,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:49:24,091 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:49:24,092 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:49:24,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2025-03-16 20:49:25,280 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79d89963/7974b952bf56422b8be32591e5422483/FLAGa2e981d82 [2025-03-16 20:49:25,567 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:49:25,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2025-03-16 20:49:25,582 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79d89963/7974b952bf56422b8be32591e5422483/FLAGa2e981d82 [2025-03-16 20:49:25,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c79d89963/7974b952bf56422b8be32591e5422483 [2025-03-16 20:49:25,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:49:25,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:49:25,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:49:25,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:49:25,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:49:25,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:49:25" (1/1) ... [2025-03-16 20:49:25,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715fd6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:25, skipping insertion in model container [2025-03-16 20:49:25,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:49:25" (1/1) ... [2025-03-16 20:49:25,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:49:25,753 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/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2025-03-16 20:49:25,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:49:25,990 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:49:25,997 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/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2025-03-16 20:49:26,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:49:26,110 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:49:26,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26 WrapperNode [2025-03-16 20:49:26,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:49:26,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:49:26,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:49:26,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:49:26,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,318 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2358 [2025-03-16 20:49:26,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:49:26,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:49:26,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:49:26,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:49:26,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,420 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 4, 4]. [2025-03-16 20:49:26,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,520 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:49:26,608 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:49:26,608 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:49:26,609 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:49:26,609 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (1/1) ... [2025-03-16 20:49:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:49:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:26,635 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 20:49:26,637 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 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 20:49:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 20:49:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:49:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 20:49:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 20:49:26,856 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:49:26,857 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:49:28,581 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: call ULTIMATE.dealloc(main_~#state_14~0#1.base, main_~#state_14~0#1.offset);havoc main_~#state_14~0#1.base, main_~#state_14~0#1.offset;call ULTIMATE.dealloc(main_~#state_44~0#1.base, main_~#state_44~0#1.offset);havoc main_~#state_44~0#1.base, main_~#state_44~0#1.offset; [2025-03-16 20:49:28,870 INFO L? ?]: Removed 1277 outVars from TransFormulas that were not future-live. [2025-03-16 20:49:28,871 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:49:28,967 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:49:28,967 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:49:28,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:49:28 BoogieIcfgContainer [2025-03-16 20:49:28,967 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:49:28,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:49:28,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:49:28,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:49:28,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:49:25" (1/3) ... [2025-03-16 20:49:28,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f2f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:49:28, skipping insertion in model container [2025-03-16 20:49:28,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:49:26" (2/3) ... [2025-03-16 20:49:28,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f2f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:49:28, skipping insertion in model container [2025-03-16 20:49:28,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:49:28" (3/3) ... [2025-03-16 20:49:28,975 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2025-03-16 20:49:28,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:49:28,987 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c that has 2 procedures, 739 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-16 20:49:29,039 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:49:29,049 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;@75893272, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:49:29,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 20:49:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 739 states, 731 states have (on average 1.4979480164158687) internal successors, (1095), 732 states have internal predecessors, (1095), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-16 20:49:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2025-03-16 20:49:29,067 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:29,067 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:29,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:29,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1657646228, now seen corresponding path program 1 times [2025-03-16 20:49:29,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:29,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721556098] [2025-03-16 20:49:29,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:29,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:29,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 238 statements into 1 equivalence classes. [2025-03-16 20:49:29,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 238 of 238 statements. [2025-03-16 20:49:29,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:29,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-16 20:49:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721556098] [2025-03-16 20:49:29,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721556098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:29,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004702407] [2025-03-16 20:49:29,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:29,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:29,469 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 20:49:29,470 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 20:49:29,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 238 statements into 1 equivalence classes. [2025-03-16 20:49:29,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 238 of 238 statements. [2025-03-16 20:49:29,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:29,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:29,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 20:49:29,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-16 20:49:29,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:49:29,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004702407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:29,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:49:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 20:49:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045079670] [2025-03-16 20:49:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:29,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 20:49:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:29,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 20:49:29,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 20:49:29,918 INFO L87 Difference]: Start difference. First operand has 739 states, 731 states have (on average 1.4979480164158687) internal successors, (1095), 732 states have internal predecessors, (1095), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:49:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:30,168 INFO L93 Difference]: Finished difference Result 1384 states and 2076 transitions. [2025-03-16 20:49:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 20:49:30,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 238 [2025-03-16 20:49:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:30,185 INFO L225 Difference]: With dead ends: 1384 [2025-03-16 20:49:30,185 INFO L226 Difference]: Without dead ends: 736 [2025-03-16 20:49:30,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 20:49:30,195 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:30,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 922 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:49:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-03-16 20:49:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2025-03-16 20:49:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 729 states have (on average 1.49519890260631) internal successors, (1090), 729 states have internal predecessors, (1090), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-16 20:49:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1100 transitions. [2025-03-16 20:49:30,270 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1100 transitions. Word has length 238 [2025-03-16 20:49:30,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:30,271 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 1100 transitions. [2025-03-16 20:49:30,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:49:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1100 transitions. [2025-03-16 20:49:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2025-03-16 20:49:30,279 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:30,279 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:30,289 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 20:49:30,479 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,SelfDestructingSolverStorable0 [2025-03-16 20:49:30,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:30,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -883627321, now seen corresponding path program 1 times [2025-03-16 20:49:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:30,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211742908] [2025-03-16 20:49:30,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:30,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:30,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 238 statements into 1 equivalence classes. [2025-03-16 20:49:30,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 238 of 238 statements. [2025-03-16 20:49:30,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:30,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 20:49:31,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:31,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211742908] [2025-03-16 20:49:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211742908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:31,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:31,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:49:31,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132862757] [2025-03-16 20:49:31,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:31,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:49:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:31,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:49:31,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:49:31,101 INFO L87 Difference]: Start difference. First operand 736 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:31,399 INFO L93 Difference]: Finished difference Result 1471 states and 2199 transitions. [2025-03-16 20:49:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:49:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 238 [2025-03-16 20:49:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:31,404 INFO L225 Difference]: With dead ends: 1471 [2025-03-16 20:49:31,404 INFO L226 Difference]: Without dead ends: 741 [2025-03-16 20:49:31,405 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 20:49:31,406 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 6 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:31,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1838 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:49:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-03-16 20:49:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2025-03-16 20:49:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 730 states have (on average 1.4945205479452055) internal successors, (1091), 730 states have internal predecessors, (1091), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-16 20:49:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1101 transitions. [2025-03-16 20:49:31,431 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1101 transitions. Word has length 238 [2025-03-16 20:49:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:31,432 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1101 transitions. [2025-03-16 20:49:31,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1101 transitions. [2025-03-16 20:49:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-03-16 20:49:31,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:31,436 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:31,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:49:31,436 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:31,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1516724421, now seen corresponding path program 1 times [2025-03-16 20:49:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877573817] [2025-03-16 20:49:31,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:31,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-16 20:49:31,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-16 20:49:31,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:31,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 20:49:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877573817] [2025-03-16 20:49:31,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877573817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:31,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130886950] [2025-03-16 20:49:31,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:31,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:31,925 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 20:49:31,926 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 20:49:32,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-16 20:49:32,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-16 20:49:32,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:32,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:32,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:49:32,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 20:49:32,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:49:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 20:49:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130886950] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:49:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2025-03-16 20:49:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744318817] [2025-03-16 20:49:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:32,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:49:32,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:32,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:49:32,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:32,381 INFO L87 Difference]: Start difference. First operand 737 states and 1101 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:32,613 INFO L93 Difference]: Finished difference Result 1447 states and 2162 transitions. [2025-03-16 20:49:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:49:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 241 [2025-03-16 20:49:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:32,617 INFO L225 Difference]: With dead ends: 1447 [2025-03-16 20:49:32,618 INFO L226 Difference]: Without dead ends: 738 [2025-03-16 20:49:32,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:32,619 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 6 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:32,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1833 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:49:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2025-03-16 20:49:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2025-03-16 20:49:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 731 states have (on average 1.493844049247606) internal successors, (1092), 731 states have internal predecessors, (1092), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-16 20:49:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1102 transitions. [2025-03-16 20:49:32,631 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1102 transitions. Word has length 241 [2025-03-16 20:49:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:32,631 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1102 transitions. [2025-03-16 20:49:32,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1102 transitions. [2025-03-16 20:49:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2025-03-16 20:49:32,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:32,633 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:32,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 20:49:32,833 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,SelfDestructingSolverStorable2 [2025-03-16 20:49:32,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:32,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 77928120, now seen corresponding path program 1 times [2025-03-16 20:49:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082009856] [2025-03-16 20:49:32,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:32,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-03-16 20:49:32,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-03-16 20:49:32,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:32,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 20:49:33,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:33,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082009856] [2025-03-16 20:49:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082009856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367185426] [2025-03-16 20:49:33,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:33,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:33,157 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 20:49:33,157 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 20:49:33,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-03-16 20:49:33,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-03-16 20:49:33,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:33,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:33,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-16 20:49:33,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 20:49:33,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:49:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 20:49:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367185426] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:49:34,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:49:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2025-03-16 20:49:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764882513] [2025-03-16 20:49:34,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:49:34,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 20:49:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:34,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 20:49:34,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-16 20:49:34,159 INFO L87 Difference]: Start difference. First operand 738 states and 1102 transitions. Second operand has 12 states, 12 states have (on average 29.833333333333332) internal successors, (358), 12 states have internal predecessors, (358), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:49:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:35,521 INFO L93 Difference]: Finished difference Result 2087 states and 3118 transitions. [2025-03-16 20:49:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:49:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 29.833333333333332) internal successors, (358), 12 states have internal predecessors, (358), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 244 [2025-03-16 20:49:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:35,527 INFO L225 Difference]: With dead ends: 2087 [2025-03-16 20:49:35,527 INFO L226 Difference]: Without dead ends: 1356 [2025-03-16 20:49:35,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-03-16 20:49:35,531 INFO L435 NwaCegarLoop]: 682 mSDtfsCounter, 2682 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:35,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2687 Valid, 3388 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 20:49:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2025-03-16 20:49:35,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 970. [2025-03-16 20:49:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 958 states have (on average 1.4906054279749479) internal successors, (1428), 958 states have internal predecessors, (1428), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1448 transitions. [2025-03-16 20:49:35,563 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1448 transitions. Word has length 244 [2025-03-16 20:49:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:35,563 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1448 transitions. [2025-03-16 20:49:35,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.833333333333332) internal successors, (358), 12 states have internal predecessors, (358), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:49:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1448 transitions. [2025-03-16 20:49:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-16 20:49:35,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:35,568 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:35,578 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 20:49:35,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:35,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1902363035, now seen corresponding path program 1 times [2025-03-16 20:49:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799032112] [2025-03-16 20:49:35,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:35,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 20:49:35,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 20:49:35,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:35,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-16 20:49:36,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799032112] [2025-03-16 20:49:36,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799032112] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758977198] [2025-03-16 20:49:36,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:36,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:36,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:36,061 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 20:49:36,062 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 20:49:36,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 20:49:36,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 20:49:36,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:36,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:36,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 20:49:36,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 20:49:36,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:49:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-16 20:49:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758977198] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:49:36,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:49:36,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2025-03-16 20:49:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219591420] [2025-03-16 20:49:36,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:49:36,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 20:49:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:36,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 20:49:36,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:49:36,462 INFO L87 Difference]: Start difference. First operand 970 states and 1448 transitions. Second operand has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:36,948 INFO L93 Difference]: Finished difference Result 1967 states and 2941 transitions. [2025-03-16 20:49:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:49:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 248 [2025-03-16 20:49:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:36,953 INFO L225 Difference]: With dead ends: 1967 [2025-03-16 20:49:36,953 INFO L226 Difference]: Without dead ends: 1009 [2025-03-16 20:49:36,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-16 20:49:36,956 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 48 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:36,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5528 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:49:36,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2025-03-16 20:49:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1005. [2025-03-16 20:49:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 993 states have (on average 1.487411883182276) internal successors, (1477), 993 states have internal predecessors, (1477), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1497 transitions. [2025-03-16 20:49:36,978 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1497 transitions. Word has length 248 [2025-03-16 20:49:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:36,978 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1497 transitions. [2025-03-16 20:49:36,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1497 transitions. [2025-03-16 20:49:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-03-16 20:49:36,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:36,981 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:36,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 20:49:37,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:37,182 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:37,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1176080054, now seen corresponding path program 2 times [2025-03-16 20:49:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980239158] [2025-03-16 20:49:37,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:49:37,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:37,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 260 statements into 2 equivalence classes. [2025-03-16 20:49:37,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 167 of 260 statements. [2025-03-16 20:49:37,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:49:37,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-16 20:49:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980239158] [2025-03-16 20:49:37,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980239158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:37,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:37,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:49:37,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560872737] [2025-03-16 20:49:37,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:37,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:37,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:37,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:37,539 INFO L87 Difference]: Start difference. First operand 1005 states and 1497 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:37,795 INFO L93 Difference]: Finished difference Result 1009 states and 1501 transitions. [2025-03-16 20:49:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 260 [2025-03-16 20:49:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:37,800 INFO L225 Difference]: With dead ends: 1009 [2025-03-16 20:49:37,801 INFO L226 Difference]: Without dead ends: 1007 [2025-03-16 20:49:37,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:37,802 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 0 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:37,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2755 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:49:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2025-03-16 20:49:37,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1007. [2025-03-16 20:49:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 995 states have (on average 1.48643216080402) internal successors, (1479), 995 states have internal predecessors, (1479), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1499 transitions. [2025-03-16 20:49:37,822 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1499 transitions. Word has length 260 [2025-03-16 20:49:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:37,824 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1499 transitions. [2025-03-16 20:49:37,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1499 transitions. [2025-03-16 20:49:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-03-16 20:49:37,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:37,827 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:37,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:49:37,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:37,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2103422985, now seen corresponding path program 1 times [2025-03-16 20:49:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526201908] [2025-03-16 20:49:37,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:37,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-03-16 20:49:37,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-03-16 20:49:37,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:37,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-16 20:49:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526201908] [2025-03-16 20:49:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526201908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659511223] [2025-03-16 20:49:38,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:38,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:38,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:38,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 20:49:38,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-03-16 20:49:38,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-03-16 20:49:38,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:38,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:38,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-16 20:49:38,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-16 20:49:38,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:49:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 20:49:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659511223] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:49:38,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:49:38,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2025-03-16 20:49:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118601010] [2025-03-16 20:49:38,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:49:38,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-16 20:49:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:38,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-16 20:49:38,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-03-16 20:49:38,648 INFO L87 Difference]: Start difference. First operand 1007 states and 1499 transitions. Second operand has 15 states, 15 states have (on average 17.133333333333333) internal successors, (257), 15 states have internal predecessors, (257), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:39,453 INFO L93 Difference]: Finished difference Result 2022 states and 3014 transitions. [2025-03-16 20:49:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 20:49:39,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.133333333333333) internal successors, (257), 15 states have internal predecessors, (257), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 261 [2025-03-16 20:49:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:39,457 INFO L225 Difference]: With dead ends: 2022 [2025-03-16 20:49:39,457 INFO L226 Difference]: Without dead ends: 1032 [2025-03-16 20:49:39,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2025-03-16 20:49:39,459 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 76 mSDsluCounter, 10170 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 11102 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:39,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 11102 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:49:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2025-03-16 20:49:39,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1032. [2025-03-16 20:49:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1020 states have (on average 1.4843137254901961) internal successors, (1514), 1020 states have internal predecessors, (1514), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1534 transitions. [2025-03-16 20:49:39,478 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1534 transitions. Word has length 261 [2025-03-16 20:49:39,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:39,478 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1534 transitions. [2025-03-16 20:49:39,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.133333333333333) internal successors, (257), 15 states have internal predecessors, (257), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:39,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1534 transitions. [2025-03-16 20:49:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-16 20:49:39,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:39,481 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:39,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 20:49:39,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:39,681 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:39,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1196131637, now seen corresponding path program 2 times [2025-03-16 20:49:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207580341] [2025-03-16 20:49:39,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:49:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:39,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 276 statements into 2 equivalence classes. [2025-03-16 20:49:39,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 168 of 276 statements. [2025-03-16 20:49:39,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:49:39,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-16 20:49:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207580341] [2025-03-16 20:49:39,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207580341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:39,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:39,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:49:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860898384] [2025-03-16 20:49:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:39,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:39,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:39,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:39,881 INFO L87 Difference]: Start difference. First operand 1032 states and 1534 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:40,133 INFO L93 Difference]: Finished difference Result 1681 states and 2502 transitions. [2025-03-16 20:49:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 276 [2025-03-16 20:49:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:40,138 INFO L225 Difference]: With dead ends: 1681 [2025-03-16 20:49:40,138 INFO L226 Difference]: Without dead ends: 1034 [2025-03-16 20:49:40,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:40,139 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 0 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:40,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2752 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:49:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2025-03-16 20:49:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2025-03-16 20:49:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1022 states have (on average 1.4833659491193738) internal successors, (1516), 1022 states have internal predecessors, (1516), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1536 transitions. [2025-03-16 20:49:40,157 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1536 transitions. Word has length 276 [2025-03-16 20:49:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:40,157 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1536 transitions. [2025-03-16 20:49:40,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1536 transitions. [2025-03-16 20:49:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-03-16 20:49:40,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:40,160 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:40,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:49:40,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:40,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash -788832625, now seen corresponding path program 1 times [2025-03-16 20:49:40,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:40,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064819705] [2025-03-16 20:49:40,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:40,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:40,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-16 20:49:40,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-16 20:49:40,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:40,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-16 20:49:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064819705] [2025-03-16 20:49:40,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064819705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851310891] [2025-03-16 20:49:40,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:40,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:40,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:40,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 20:49:40,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-16 20:49:40,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-16 20:49:40,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:40,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:40,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 20:49:40,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-16 20:49:40,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:49:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2025-03-16 20:49:41,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851310891] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:49:41,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:49:41,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2025-03-16 20:49:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363238368] [2025-03-16 20:49:41,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:49:41,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 20:49:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:41,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 20:49:41,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-03-16 20:49:41,058 INFO L87 Difference]: Start difference. First operand 1034 states and 1536 transitions. Second operand has 18 states, 18 states have (on average 14.833333333333334) internal successors, (267), 18 states have internal predecessors, (267), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:41,816 INFO L93 Difference]: Finished difference Result 2007 states and 2992 transitions. [2025-03-16 20:49:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 20:49:41,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.833333333333334) internal successors, (267), 18 states have internal predecessors, (267), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 277 [2025-03-16 20:49:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:41,819 INFO L225 Difference]: With dead ends: 2007 [2025-03-16 20:49:41,819 INFO L226 Difference]: Without dead ends: 1074 [2025-03-16 20:49:41,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:49:41,821 INFO L435 NwaCegarLoop]: 950 mSDtfsCounter, 108 mSDsluCounter, 9451 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 10401 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:41,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 10401 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:49:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2025-03-16 20:49:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2025-03-16 20:49:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1062 states have (on average 1.4802259887005649) internal successors, (1572), 1062 states have internal predecessors, (1572), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1592 transitions. [2025-03-16 20:49:41,838 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1592 transitions. Word has length 277 [2025-03-16 20:49:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:41,838 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1592 transitions. [2025-03-16 20:49:41,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.833333333333334) internal successors, (267), 18 states have internal predecessors, (267), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-16 20:49:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1592 transitions. [2025-03-16 20:49:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2025-03-16 20:49:41,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:41,840 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:41,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 20:49:42,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:42,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:42,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1986653361, now seen corresponding path program 2 times [2025-03-16 20:49:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343539716] [2025-03-16 20:49:42,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:49:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:42,073 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 289 statements into 2 equivalence classes. [2025-03-16 20:49:42,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 169 of 289 statements. [2025-03-16 20:49:42,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:49:42,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:42,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343539716] [2025-03-16 20:49:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343539716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:42,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:49:42,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14530568] [2025-03-16 20:49:42,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:42,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:42,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:42,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:42,317 INFO L87 Difference]: Start difference. First operand 1074 states and 1592 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:42,652 INFO L93 Difference]: Finished difference Result 1729 states and 2567 transitions. [2025-03-16 20:49:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 289 [2025-03-16 20:49:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:42,655 INFO L225 Difference]: With dead ends: 1729 [2025-03-16 20:49:42,655 INFO L226 Difference]: Without dead ends: 1074 [2025-03-16 20:49:42,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:49:42,656 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 966 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:42,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1681 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:49:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2025-03-16 20:49:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2025-03-16 20:49:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1062 states have (on average 1.4783427495291903) internal successors, (1570), 1062 states have internal predecessors, (1570), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1590 transitions. [2025-03-16 20:49:42,676 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1590 transitions. Word has length 289 [2025-03-16 20:49:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:42,676 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1590 transitions. [2025-03-16 20:49:42,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1590 transitions. [2025-03-16 20:49:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2025-03-16 20:49:42,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:42,679 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:42,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:49:42,679 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:42,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash 762332088, now seen corresponding path program 1 times [2025-03-16 20:49:42,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:42,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773451454] [2025-03-16 20:49:42,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:42,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-03-16 20:49:42,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-03-16 20:49:42,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:42,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:42,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773451454] [2025-03-16 20:49:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773451454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:42,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:42,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:49:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30194060] [2025-03-16 20:49:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:42,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:49:42,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:42,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:49:42,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:49:42,933 INFO L87 Difference]: Start difference. First operand 1074 states and 1590 transitions. Second operand has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:43,295 INFO L93 Difference]: Finished difference Result 1723 states and 2556 transitions. [2025-03-16 20:49:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:43,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 290 [2025-03-16 20:49:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:43,298 INFO L225 Difference]: With dead ends: 1723 [2025-03-16 20:49:43,298 INFO L226 Difference]: Without dead ends: 1074 [2025-03-16 20:49:43,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:43,300 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1067 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:43,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1689 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:49:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2025-03-16 20:49:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2025-03-16 20:49:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1062 states have (on average 1.4774011299435028) internal successors, (1569), 1062 states have internal predecessors, (1569), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1589 transitions. [2025-03-16 20:49:43,323 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1589 transitions. Word has length 290 [2025-03-16 20:49:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:43,324 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1589 transitions. [2025-03-16 20:49:43,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:43,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1589 transitions. [2025-03-16 20:49:43,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2025-03-16 20:49:43,326 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:43,326 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:43,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:49:43,327 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:43,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2019478282, now seen corresponding path program 1 times [2025-03-16 20:49:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974718710] [2025-03-16 20:49:43,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:43,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 291 statements into 1 equivalence classes. [2025-03-16 20:49:43,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 291 of 291 statements. [2025-03-16 20:49:43,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:43,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974718710] [2025-03-16 20:49:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974718710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:43,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:49:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133176105] [2025-03-16 20:49:43,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:43,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:49:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:43,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:49:43,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:49:43,809 INFO L87 Difference]: Start difference. First operand 1074 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:44,178 INFO L93 Difference]: Finished difference Result 1729 states and 2562 transitions. [2025-03-16 20:49:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 291 [2025-03-16 20:49:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:44,181 INFO L225 Difference]: With dead ends: 1729 [2025-03-16 20:49:44,181 INFO L226 Difference]: Without dead ends: 1074 [2025-03-16 20:49:44,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:44,182 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1080 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:44,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1689 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:49:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2025-03-16 20:49:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2025-03-16 20:49:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1062 states have (on average 1.475517890772128) internal successors, (1567), 1062 states have internal predecessors, (1567), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1587 transitions. [2025-03-16 20:49:44,198 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1587 transitions. Word has length 291 [2025-03-16 20:49:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:44,198 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1587 transitions. [2025-03-16 20:49:44,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1587 transitions. [2025-03-16 20:49:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2025-03-16 20:49:44,200 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:44,200 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:44,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:49:44,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:44,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:44,201 INFO L85 PathProgramCache]: Analyzing trace with hash -414312551, now seen corresponding path program 1 times [2025-03-16 20:49:44,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:44,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577819698] [2025-03-16 20:49:44,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:44,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 292 statements into 1 equivalence classes. [2025-03-16 20:49:44,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 292 of 292 statements. [2025-03-16 20:49:44,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:44,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:44,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:44,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577819698] [2025-03-16 20:49:44,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577819698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:49:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877945728] [2025-03-16 20:49:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:44,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:44,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:44,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:49:44,653 INFO L87 Difference]: Start difference. First operand 1074 states and 1587 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:45,010 INFO L93 Difference]: Finished difference Result 1723 states and 2551 transitions. [2025-03-16 20:49:45,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:45,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 292 [2025-03-16 20:49:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:45,014 INFO L225 Difference]: With dead ends: 1723 [2025-03-16 20:49:45,014 INFO L226 Difference]: Without dead ends: 1074 [2025-03-16 20:49:45,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:49:45,015 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 941 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:45,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1681 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:49:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2025-03-16 20:49:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2025-03-16 20:49:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1062 states have (on average 1.4745762711864407) internal successors, (1566), 1062 states have internal predecessors, (1566), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1586 transitions. [2025-03-16 20:49:45,033 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1586 transitions. Word has length 292 [2025-03-16 20:49:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:45,033 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1586 transitions. [2025-03-16 20:49:45,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1586 transitions. [2025-03-16 20:49:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-03-16 20:49:45,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:45,035 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:45,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:49:45,036 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:45,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 815392580, now seen corresponding path program 1 times [2025-03-16 20:49:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944163458] [2025-03-16 20:49:45,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:45,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-03-16 20:49:45,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-03-16 20:49:45,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:45,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944163458] [2025-03-16 20:49:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944163458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 20:49:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793904904] [2025-03-16 20:49:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:45,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 20:49:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:45,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 20:49:45,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 20:49:45,952 INFO L87 Difference]: Start difference. First operand 1074 states and 1586 transitions. Second operand has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:49:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:47,228 INFO L93 Difference]: Finished difference Result 2452 states and 3631 transitions. [2025-03-16 20:49:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-16 20:49:47,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 293 [2025-03-16 20:49:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:47,232 INFO L225 Difference]: With dead ends: 2452 [2025-03-16 20:49:47,232 INFO L226 Difference]: Without dead ends: 1106 [2025-03-16 20:49:47,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-03-16 20:49:47,234 INFO L435 NwaCegarLoop]: 1461 mSDtfsCounter, 733 mSDsluCounter, 10887 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 12348 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:47,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 12348 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 20:49:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2025-03-16 20:49:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1098. [2025-03-16 20:49:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1086 states have (on average 1.4751381215469612) internal successors, (1602), 1086 states have internal predecessors, (1602), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-16 20:49:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1622 transitions. [2025-03-16 20:49:47,256 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1622 transitions. Word has length 293 [2025-03-16 20:49:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:47,256 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1622 transitions. [2025-03-16 20:49:47,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:49:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1622 transitions. [2025-03-16 20:49:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-16 20:49:47,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:47,258 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:47,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:49:47,259 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:47,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 470657227, now seen corresponding path program 1 times [2025-03-16 20:49:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953711332] [2025-03-16 20:49:47,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:47,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:47,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-16 20:49:47,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-16 20:49:47,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:47,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 20:49:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953711332] [2025-03-16 20:49:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953711332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:48,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:48,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 20:49:48,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357179846] [2025-03-16 20:49:48,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:48,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 20:49:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:48,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 20:49:48,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:49:48,169 INFO L87 Difference]: Start difference. First operand 1098 states and 1622 transitions. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:48,845 INFO L93 Difference]: Finished difference Result 2099 states and 3109 transitions. [2025-03-16 20:49:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:49:48,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 294 [2025-03-16 20:49:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:48,849 INFO L225 Difference]: With dead ends: 2099 [2025-03-16 20:49:48,849 INFO L226 Difference]: Without dead ends: 1438 [2025-03-16 20:49:48,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-16 20:49:48,851 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 1818 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:48,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 4494 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:49:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2025-03-16 20:49:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2025-03-16 20:49:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1421 states have (on average 1.4757213230119635) internal successors, (2097), 1421 states have internal predecessors, (2097), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:49:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2127 transitions. [2025-03-16 20:49:48,872 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2127 transitions. Word has length 294 [2025-03-16 20:49:48,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:48,873 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 2127 transitions. [2025-03-16 20:49:48,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:49:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2127 transitions. [2025-03-16 20:49:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2025-03-16 20:49:48,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:48,877 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:48,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 20:49:48,878 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:48,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1712655195, now seen corresponding path program 1 times [2025-03-16 20:49:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021052629] [2025-03-16 20:49:48,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:48,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 648 statements into 1 equivalence classes. [2025-03-16 20:49:49,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 648 of 648 statements. [2025-03-16 20:49:49,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:49,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:49:49,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:49,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021052629] [2025-03-16 20:49:49,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021052629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:49,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:49:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:49:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45653607] [2025-03-16 20:49:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:49,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:49:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:49,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:49:49,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:49:49,495 INFO L87 Difference]: Start difference. First operand 1438 states and 2127 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:49,690 INFO L93 Difference]: Finished difference Result 2100 states and 3110 transitions. [2025-03-16 20:49:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:49:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 648 [2025-03-16 20:49:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:49,696 INFO L225 Difference]: With dead ends: 2100 [2025-03-16 20:49:49,696 INFO L226 Difference]: Without dead ends: 1439 [2025-03-16 20:49:49,697 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 20:49:49,698 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 0 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:49,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1831 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:49:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2025-03-16 20:49:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2025-03-16 20:49:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1422 states have (on average 1.4753867791842474) internal successors, (2098), 1422 states have internal predecessors, (2098), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:49:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2128 transitions. [2025-03-16 20:49:49,726 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2128 transitions. Word has length 648 [2025-03-16 20:49:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:49,727 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 2128 transitions. [2025-03-16 20:49:49,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2128 transitions. [2025-03-16 20:49:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2025-03-16 20:49:49,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:49,732 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:49,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 20:49:49,732 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1593659065, now seen corresponding path program 1 times [2025-03-16 20:49:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:49,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191502618] [2025-03-16 20:49:49,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:49,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 649 statements into 1 equivalence classes. [2025-03-16 20:49:49,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 649 of 649 statements. [2025-03-16 20:49:49,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:49,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:49:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191502618] [2025-03-16 20:49:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191502618] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752334976] [2025-03-16 20:49:50,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:50,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:50,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 20:49:51,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 649 statements into 1 equivalence classes. [2025-03-16 20:49:51,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 649 of 649 statements. [2025-03-16 20:49:51,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:51,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:51,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 3341 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 20:49:51,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2025-03-16 20:49:51,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:49:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752334976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:49:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 20:49:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81943834] [2025-03-16 20:49:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:51,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:51,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:51,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:51,933 INFO L87 Difference]: Start difference. First operand 1439 states and 2128 transitions. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:52,349 INFO L93 Difference]: Finished difference Result 2100 states and 3109 transitions. [2025-03-16 20:49:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:52,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 649 [2025-03-16 20:49:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:52,354 INFO L225 Difference]: With dead ends: 2100 [2025-03-16 20:49:52,354 INFO L226 Difference]: Without dead ends: 1438 [2025-03-16 20:49:52,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:49:52,355 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 829 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:52,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1351 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:49:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2025-03-16 20:49:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2025-03-16 20:49:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1421 states have (on average 1.474313863476425) internal successors, (2095), 1421 states have internal predecessors, (2095), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:49:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2125 transitions. [2025-03-16 20:49:52,387 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2125 transitions. Word has length 649 [2025-03-16 20:49:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:52,388 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 2125 transitions. [2025-03-16 20:49:52,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2125 transitions. [2025-03-16 20:49:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2025-03-16 20:49:52,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:52,393 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:52,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 20:49:52,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:52,594 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:52,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 565737483, now seen corresponding path program 1 times [2025-03-16 20:49:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820634278] [2025-03-16 20:49:52,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:52,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 650 statements into 1 equivalence classes. [2025-03-16 20:49:52,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 650 of 650 statements. [2025-03-16 20:49:52,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:52,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:49:53,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:53,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820634278] [2025-03-16 20:49:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820634278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862608446] [2025-03-16 20:49:53,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:53,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:53,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:53,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:53,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 20:49:53,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 650 statements into 1 equivalence classes. [2025-03-16 20:49:54,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 650 of 650 statements. [2025-03-16 20:49:54,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:54,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:54,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 3344 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 20:49:54,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2025-03-16 20:49:54,594 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:49:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862608446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:54,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:49:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 20:49:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113641837] [2025-03-16 20:49:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:54,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:54,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:54,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:54,596 INFO L87 Difference]: Start difference. First operand 1438 states and 2125 transitions. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:55,093 INFO L93 Difference]: Finished difference Result 2098 states and 3103 transitions. [2025-03-16 20:49:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:55,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 650 [2025-03-16 20:49:55,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:55,097 INFO L225 Difference]: With dead ends: 2098 [2025-03-16 20:49:55,097 INFO L226 Difference]: Without dead ends: 1437 [2025-03-16 20:49:55,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:49:55,099 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 821 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:55,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1351 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:49:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2025-03-16 20:49:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2025-03-16 20:49:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1420 states have (on average 1.4732394366197183) internal successors, (2092), 1420 states have internal predecessors, (2092), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:49:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2122 transitions. [2025-03-16 20:49:55,122 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2122 transitions. Word has length 650 [2025-03-16 20:49:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:55,123 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2122 transitions. [2025-03-16 20:49:55,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2122 transitions. [2025-03-16 20:49:55,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2025-03-16 20:49:55,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:55,128 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:55,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 20:49:55,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 20:49:55,328 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:55,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1442390895, now seen corresponding path program 1 times [2025-03-16 20:49:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683840734] [2025-03-16 20:49:55,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:55,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 651 statements into 1 equivalence classes. [2025-03-16 20:49:55,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 651 of 651 statements. [2025-03-16 20:49:55,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:55,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:49:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683840734] [2025-03-16 20:49:55,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683840734] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348746534] [2025-03-16 20:49:55,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:55,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:55,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:55,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 20:49:56,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 651 statements into 1 equivalence classes. [2025-03-16 20:49:56,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 651 of 651 statements. [2025-03-16 20:49:56,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:56,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:56,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 3347 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 20:49:56,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:49:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2025-03-16 20:49:57,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:49:57,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348746534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:49:57,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:49:57,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 20:49:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086680777] [2025-03-16 20:49:57,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:49:57,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:49:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:49:57,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:49:57,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:49:57,323 INFO L87 Difference]: Start difference. First operand 1437 states and 2122 transitions. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:57,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:49:57,735 INFO L93 Difference]: Finished difference Result 2096 states and 3097 transitions. [2025-03-16 20:49:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:49:57,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 651 [2025-03-16 20:49:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:49:57,740 INFO L225 Difference]: With dead ends: 2096 [2025-03-16 20:49:57,741 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 20:49:57,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:49:57,742 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 807 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:49:57,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1351 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:49:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 20:49:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 20:49:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1419 states have (on average 1.4721634954193095) internal successors, (2089), 1419 states have internal predecessors, (2089), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:49:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2119 transitions. [2025-03-16 20:49:57,781 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2119 transitions. Word has length 651 [2025-03-16 20:49:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:49:57,782 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2119 transitions. [2025-03-16 20:49:57,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:49:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2119 transitions. [2025-03-16 20:49:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2025-03-16 20:49:57,787 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:49:57,788 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:57,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 20:49:57,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:57,988 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:49:57,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:49:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1391702046, now seen corresponding path program 1 times [2025-03-16 20:49:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:49:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609357611] [2025-03-16 20:49:57,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:57,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:49:58,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 652 statements into 1 equivalence classes. [2025-03-16 20:49:58,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 652 of 652 statements. [2025-03-16 20:49:58,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:58,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:49:58,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:49:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609357611] [2025-03-16 20:49:58,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609357611] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:49:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217443675] [2025-03-16 20:49:58,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:49:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:49:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:49:58,727 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:49:58,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 20:49:59,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 652 statements into 1 equivalence classes. [2025-03-16 20:49:59,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 652 of 652 statements. [2025-03-16 20:49:59,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:49:59,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:49:59,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 3350 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 20:49:59,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-03-16 20:50:00,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217443675] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2025-03-16 20:50:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826162675] [2025-03-16 20:50:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:00,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:00,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:00,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-16 20:50:00,529 INFO L87 Difference]: Start difference. First operand 1436 states and 2119 transitions. Second operand has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:00,823 INFO L93 Difference]: Finished difference Result 2095 states and 3092 transitions. [2025-03-16 20:50:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:50:00,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 652 [2025-03-16 20:50:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:00,827 INFO L225 Difference]: With dead ends: 2095 [2025-03-16 20:50:00,827 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 20:50:00,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1307 GetRequests, 1289 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:00,828 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 1811 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:00,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1669 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 20:50:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 20:50:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1419 states have (on average 1.4714587737843552) internal successors, (2088), 1419 states have internal predecessors, (2088), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2118 transitions. [2025-03-16 20:50:00,847 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2118 transitions. Word has length 652 [2025-03-16 20:50:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:00,847 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2118 transitions. [2025-03-16 20:50:00,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2118 transitions. [2025-03-16 20:50:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2025-03-16 20:50:00,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:00,851 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:00,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-16 20:50:01,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:01,052 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:01,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:01,053 INFO L85 PathProgramCache]: Analyzing trace with hash -939442202, now seen corresponding path program 1 times [2025-03-16 20:50:01,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:01,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550050753] [2025-03-16 20:50:01,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:01,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 653 statements into 1 equivalence classes. [2025-03-16 20:50:01,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 653 of 653 statements. [2025-03-16 20:50:01,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:01,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:50:01,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550050753] [2025-03-16 20:50:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550050753] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:01,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102181081] [2025-03-16 20:50:01,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:01,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:01,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 20:50:02,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 653 statements into 1 equivalence classes. [2025-03-16 20:50:02,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 653 of 653 statements. [2025-03-16 20:50:02,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:02,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:02,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 3353 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 20:50:02,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-03-16 20:50:03,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:03,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102181081] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:03,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:03,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2025-03-16 20:50:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787009611] [2025-03-16 20:50:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:03,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:03,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:03,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:03,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-16 20:50:03,824 INFO L87 Difference]: Start difference. First operand 1436 states and 2118 transitions. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:04,103 INFO L93 Difference]: Finished difference Result 2095 states and 3090 transitions. [2025-03-16 20:50:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:50:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 653 [2025-03-16 20:50:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:04,107 INFO L225 Difference]: With dead ends: 2095 [2025-03-16 20:50:04,107 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 20:50:04,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1309 GetRequests, 1291 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:04,108 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 1787 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:04,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 1669 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:50:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 20:50:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 20:50:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1419 states have (on average 1.470754052149401) internal successors, (2087), 1419 states have internal predecessors, (2087), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2117 transitions. [2025-03-16 20:50:04,126 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2117 transitions. Word has length 653 [2025-03-16 20:50:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:04,126 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2117 transitions. [2025-03-16 20:50:04,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2117 transitions. [2025-03-16 20:50:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2025-03-16 20:50:04,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:04,130 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:04,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 20:50:04,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-16 20:50:04,331 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:04,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash 224389947, now seen corresponding path program 1 times [2025-03-16 20:50:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:04,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775924246] [2025-03-16 20:50:04,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:04,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:04,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 654 statements into 1 equivalence classes. [2025-03-16 20:50:04,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 654 of 654 statements. [2025-03-16 20:50:04,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:04,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:50:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775924246] [2025-03-16 20:50:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775924246] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940618033] [2025-03-16 20:50:05,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:05,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:05,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:05,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:05,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 20:50:05,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 654 statements into 1 equivalence classes. [2025-03-16 20:50:05,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 654 of 654 statements. [2025-03-16 20:50:05,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:05,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:05,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 20:50:05,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-03-16 20:50:06,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940618033] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2025-03-16 20:50:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131689908] [2025-03-16 20:50:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:07,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:07,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:07,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-16 20:50:07,088 INFO L87 Difference]: Start difference. First operand 1436 states and 2117 transitions. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:07,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:07,373 INFO L93 Difference]: Finished difference Result 2095 states and 3088 transitions. [2025-03-16 20:50:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:50:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 654 [2025-03-16 20:50:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:07,379 INFO L225 Difference]: With dead ends: 2095 [2025-03-16 20:50:07,379 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 20:50:07,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1293 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:07,384 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 889 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:07,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1677 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 20:50:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 20:50:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1419 states have (on average 1.4700493305144469) internal successors, (2086), 1419 states have internal predecessors, (2086), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:07,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2116 transitions. [2025-03-16 20:50:07,404 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2116 transitions. Word has length 654 [2025-03-16 20:50:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:07,404 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2116 transitions. [2025-03-16 20:50:07,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2116 transitions. [2025-03-16 20:50:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2025-03-16 20:50:07,408 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:07,408 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:07,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-16 20:50:07,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-16 20:50:07,609 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:07,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash 669642448, now seen corresponding path program 1 times [2025-03-16 20:50:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:07,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126492627] [2025-03-16 20:50:07,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:07,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 655 statements into 1 equivalence classes. [2025-03-16 20:50:07,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 655 of 655 statements. [2025-03-16 20:50:07,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:07,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:50:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126492627] [2025-03-16 20:50:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126492627] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307361870] [2025-03-16 20:50:08,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:08,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:08,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:08,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 20:50:08,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 655 statements into 1 equivalence classes. [2025-03-16 20:50:09,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 655 of 655 statements. [2025-03-16 20:50:09,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:09,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:09,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-16 20:50:09,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-03-16 20:50:09,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:10,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307361870] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:10,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:10,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2025-03-16 20:50:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24930502] [2025-03-16 20:50:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:10,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:10,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:10,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:10,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-16 20:50:10,335 INFO L87 Difference]: Start difference. First operand 1436 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:10,627 INFO L93 Difference]: Finished difference Result 2095 states and 3086 transitions. [2025-03-16 20:50:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:50:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 655 [2025-03-16 20:50:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:10,632 INFO L225 Difference]: With dead ends: 2095 [2025-03-16 20:50:10,632 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 20:50:10,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1313 GetRequests, 1295 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:10,633 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 1751 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:10,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1669 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 20:50:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 20:50:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1419 states have (on average 1.4693446088794926) internal successors, (2085), 1419 states have internal predecessors, (2085), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2115 transitions. [2025-03-16 20:50:10,657 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2115 transitions. Word has length 655 [2025-03-16 20:50:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:10,657 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 2115 transitions. [2025-03-16 20:50:10,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2115 transitions. [2025-03-16 20:50:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2025-03-16 20:50:10,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:10,661 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:10,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 20:50:10,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-16 20:50:10,865 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:10,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1270286220, now seen corresponding path program 1 times [2025-03-16 20:50:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658946964] [2025-03-16 20:50:10,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:10,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 656 statements into 1 equivalence classes. [2025-03-16 20:50:11,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 656 of 656 statements. [2025-03-16 20:50:11,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:11,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-16 20:50:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658946964] [2025-03-16 20:50:11,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658946964] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:11,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498632562] [2025-03-16 20:50:11,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:11,448 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:11,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 20:50:12,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 656 statements into 1 equivalence classes. [2025-03-16 20:50:12,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 656 of 656 statements. [2025-03-16 20:50:12,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:12,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:12,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:50:12,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 279 proven. 8 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2025-03-16 20:50:12,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:12,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498632562] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:12,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:12,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2025-03-16 20:50:12,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282919624] [2025-03-16 20:50:12,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:12,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:50:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:12,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:50:12,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:12,475 INFO L87 Difference]: Start difference. First operand 1436 states and 2115 transitions. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:12,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:12,675 INFO L93 Difference]: Finished difference Result 2096 states and 3086 transitions. [2025-03-16 20:50:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:50:12,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 656 [2025-03-16 20:50:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:12,680 INFO L225 Difference]: With dead ends: 2096 [2025-03-16 20:50:12,681 INFO L226 Difference]: Without dead ends: 1437 [2025-03-16 20:50:12,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1314 GetRequests, 1309 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:12,682 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 0 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:12,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1811 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:50:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2025-03-16 20:50:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2025-03-16 20:50:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1420 states have (on average 1.4690140845070423) internal successors, (2086), 1420 states have internal predecessors, (2086), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2116 transitions. [2025-03-16 20:50:12,704 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2116 transitions. Word has length 656 [2025-03-16 20:50:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:12,704 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2116 transitions. [2025-03-16 20:50:12,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2116 transitions. [2025-03-16 20:50:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2025-03-16 20:50:12,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:12,709 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:12,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 20:50:12,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:12,910 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:12,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1228627863, now seen corresponding path program 1 times [2025-03-16 20:50:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:12,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002177152] [2025-03-16 20:50:12,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:12,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 657 statements into 1 equivalence classes. [2025-03-16 20:50:13,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 657 of 657 statements. [2025-03-16 20:50:13,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:13,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2025-03-16 20:50:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002177152] [2025-03-16 20:50:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002177152] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853657122] [2025-03-16 20:50:13,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:13,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:13,558 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:13,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 20:50:14,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 657 statements into 1 equivalence classes. [2025-03-16 20:50:14,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 657 of 657 statements. [2025-03-16 20:50:14,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:14,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:14,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 3371 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:50:14,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 279 proven. 8 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2025-03-16 20:50:14,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2025-03-16 20:50:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853657122] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:14,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2025-03-16 20:50:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422688418] [2025-03-16 20:50:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:14,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:50:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:14,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:50:14,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:14,609 INFO L87 Difference]: Start difference. First operand 1437 states and 2116 transitions. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:14,776 INFO L93 Difference]: Finished difference Result 2098 states and 3088 transitions. [2025-03-16 20:50:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:50:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 657 [2025-03-16 20:50:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:14,779 INFO L225 Difference]: With dead ends: 2098 [2025-03-16 20:50:14,779 INFO L226 Difference]: Without dead ends: 1438 [2025-03-16 20:50:14,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:14,783 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 0 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:14,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1811 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:50:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2025-03-16 20:50:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1438. [2025-03-16 20:50:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1421 states have (on average 1.4686840253342717) internal successors, (2087), 1421 states have internal predecessors, (2087), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2117 transitions. [2025-03-16 20:50:14,800 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2117 transitions. Word has length 657 [2025-03-16 20:50:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:14,801 INFO L471 AbstractCegarLoop]: Abstraction has 1438 states and 2117 transitions. [2025-03-16 20:50:14,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2117 transitions. [2025-03-16 20:50:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2025-03-16 20:50:14,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:14,804 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:14,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-16 20:50:15,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:15,005 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:15,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -540502738, now seen corresponding path program 1 times [2025-03-16 20:50:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:15,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083013325] [2025-03-16 20:50:15,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:15,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:15,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 658 statements into 1 equivalence classes. [2025-03-16 20:50:15,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 658 of 658 statements. [2025-03-16 20:50:15,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:15,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2025-03-16 20:50:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083013325] [2025-03-16 20:50:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083013325] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152356725] [2025-03-16 20:50:15,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:15,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:15,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:15,576 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:15,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 20:50:16,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 658 statements into 1 equivalence classes. [2025-03-16 20:50:16,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 658 of 658 statements. [2025-03-16 20:50:16,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:16,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:16,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 3380 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 20:50:16,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 279 proven. 8 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2025-03-16 20:50:16,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-16 20:50:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152356725] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2025-03-16 20:50:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031540267] [2025-03-16 20:50:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:50:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:16,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:50:16,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:16,670 INFO L87 Difference]: Start difference. First operand 1438 states and 2117 transitions. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:16,858 INFO L93 Difference]: Finished difference Result 2100 states and 3090 transitions. [2025-03-16 20:50:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:50:16,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 658 [2025-03-16 20:50:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:16,862 INFO L225 Difference]: With dead ends: 2100 [2025-03-16 20:50:16,862 INFO L226 Difference]: Without dead ends: 1439 [2025-03-16 20:50:16,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:16,863 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 0 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:16,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1811 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:50:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2025-03-16 20:50:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2025-03-16 20:50:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1422 states have (on average 1.4683544303797469) internal successors, (2088), 1422 states have internal predecessors, (2088), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2118 transitions. [2025-03-16 20:50:16,902 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2118 transitions. Word has length 658 [2025-03-16 20:50:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:16,903 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 2118 transitions. [2025-03-16 20:50:16,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 20:50:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2118 transitions. [2025-03-16 20:50:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2025-03-16 20:50:16,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:16,906 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:16,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-16 20:50:17,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 20:50:17,107 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:17,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 318475561, now seen corresponding path program 1 times [2025-03-16 20:50:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:17,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010411001] [2025-03-16 20:50:17,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:17,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 659 statements into 1 equivalence classes. [2025-03-16 20:50:17,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 659 of 659 statements. [2025-03-16 20:50:17,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:17,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-16 20:50:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010411001] [2025-03-16 20:50:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010411001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546076232] [2025-03-16 20:50:17,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:17,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:17,755 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:17,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 20:50:18,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 659 statements into 1 equivalence classes. [2025-03-16 20:50:18,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 659 of 659 statements. [2025-03-16 20:50:18,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:18,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:18,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 3389 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 20:50:18,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 279 proven. 30 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2025-03-16 20:50:18,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-16 20:50:18,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546076232] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:50:18,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:50:18,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2025-03-16 20:50:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075728544] [2025-03-16 20:50:18,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:50:18,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 20:50:18,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:18,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 20:50:18,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:50:18,959 INFO L87 Difference]: Start difference. First operand 1439 states and 2118 transitions. Second operand has 9 states, 9 states have (on average 64.77777777777777) internal successors, (583), 9 states have internal predecessors, (583), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:19,299 INFO L93 Difference]: Finished difference Result 2104 states and 3096 transitions. [2025-03-16 20:50:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 20:50:19,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 64.77777777777777) internal successors, (583), 9 states have internal predecessors, (583), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 659 [2025-03-16 20:50:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:19,302 INFO L225 Difference]: With dead ends: 2104 [2025-03-16 20:50:19,302 INFO L226 Difference]: Without dead ends: 1442 [2025-03-16 20:50:19,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-16 20:50:19,303 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 10 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:19,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5433 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2025-03-16 20:50:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1442. [2025-03-16 20:50:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1425 states have (on average 1.4673684210526317) internal successors, (2091), 1425 states have internal predecessors, (2091), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2121 transitions. [2025-03-16 20:50:19,340 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2121 transitions. Word has length 659 [2025-03-16 20:50:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:19,340 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 2121 transitions. [2025-03-16 20:50:19,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.77777777777777) internal successors, (583), 9 states have internal predecessors, (583), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2121 transitions. [2025-03-16 20:50:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2025-03-16 20:50:19,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:19,344 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:19,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-16 20:50:19,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 20:50:19,545 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:19,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:19,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1236420291, now seen corresponding path program 2 times [2025-03-16 20:50:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:19,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164180829] [2025-03-16 20:50:19,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:19,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:19,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 662 statements into 2 equivalence classes. [2025-03-16 20:50:19,666 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 172 of 662 statements. [2025-03-16 20:50:19,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:19,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2025-03-16 20:50:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164180829] [2025-03-16 20:50:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164180829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:50:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:50:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:50:19,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770083596] [2025-03-16 20:50:19,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:19,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:19,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:19,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:50:19,927 INFO L87 Difference]: Start difference. First operand 1442 states and 2121 transitions. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:20,196 INFO L93 Difference]: Finished difference Result 2405 states and 3538 transitions. [2025-03-16 20:50:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 20:50:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 662 [2025-03-16 20:50:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:20,199 INFO L225 Difference]: With dead ends: 2405 [2025-03-16 20:50:20,199 INFO L226 Difference]: Without dead ends: 1738 [2025-03-16 20:50:20,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 20:50:20,200 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 142 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:20,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 3604 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:50:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2025-03-16 20:50:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1734. [2025-03-16 20:50:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1717 states have (on average 1.4694234129295283) internal successors, (2523), 1717 states have internal predecessors, (2523), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2553 transitions. [2025-03-16 20:50:20,220 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2553 transitions. Word has length 662 [2025-03-16 20:50:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:20,221 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2553 transitions. [2025-03-16 20:50:20,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2553 transitions. [2025-03-16 20:50:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2025-03-16 20:50:20,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:20,224 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:20,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 20:50:20,224 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:20,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 596697529, now seen corresponding path program 1 times [2025-03-16 20:50:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:20,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675974929] [2025-03-16 20:50:20,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:20,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 664 statements into 1 equivalence classes. [2025-03-16 20:50:20,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 664 of 664 statements. [2025-03-16 20:50:20,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:20,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-16 20:50:20,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675974929] [2025-03-16 20:50:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675974929] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798883948] [2025-03-16 20:50:20,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:20,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:20,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:20,982 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:20,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 20:50:21,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 664 statements into 1 equivalence classes. [2025-03-16 20:50:22,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 664 of 664 statements. [2025-03-16 20:50:22,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:22,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:22,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 20:50:22,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 280 proven. 84 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-03-16 20:50:22,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2025-03-16 20:50:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798883948] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:50:22,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:50:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2025-03-16 20:50:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043827354] [2025-03-16 20:50:22,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:50:22,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 20:50:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:22,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 20:50:22,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-03-16 20:50:22,244 INFO L87 Difference]: Start difference. First operand 1734 states and 2553 transitions. Second operand has 18 states, 18 states have (on average 33.333333333333336) internal successors, (600), 18 states have internal predecessors, (600), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:22,912 INFO L93 Difference]: Finished difference Result 2549 states and 3752 transitions. [2025-03-16 20:50:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 20:50:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.333333333333336) internal successors, (600), 18 states have internal predecessors, (600), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 664 [2025-03-16 20:50:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:22,915 INFO L225 Difference]: With dead ends: 2549 [2025-03-16 20:50:22,915 INFO L226 Difference]: Without dead ends: 1738 [2025-03-16 20:50:22,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1317 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:22,916 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 22 mSDsluCounter, 9165 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10086 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:22,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10086 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:50:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2025-03-16 20:50:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2025-03-16 20:50:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1721 states have (on average 1.4683323649041256) internal successors, (2527), 1721 states have internal predecessors, (2527), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2557 transitions. [2025-03-16 20:50:22,936 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2557 transitions. Word has length 664 [2025-03-16 20:50:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:22,936 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 2557 transitions. [2025-03-16 20:50:22,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.333333333333336) internal successors, (600), 18 states have internal predecessors, (600), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2557 transitions. [2025-03-16 20:50:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2025-03-16 20:50:22,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:22,940 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:22,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-16 20:50:23,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-16 20:50:23,141 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:23,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -490867911, now seen corresponding path program 2 times [2025-03-16 20:50:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70401893] [2025-03-16 20:50:23,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:23,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 668 statements into 2 equivalence classes. [2025-03-16 20:50:23,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 173 of 668 statements. [2025-03-16 20:50:23,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:23,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 2 proven. 173 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2025-03-16 20:50:23,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70401893] [2025-03-16 20:50:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70401893] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174509587] [2025-03-16 20:50:23,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:23,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 20:50:24,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 668 statements into 2 equivalence classes. [2025-03-16 20:50:24,400 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 173 of 668 statements. [2025-03-16 20:50:24,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:24,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:24,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-16 20:50:24,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 272 proven. 3 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2025-03-16 20:50:25,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 170 proven. 5 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2025-03-16 20:50:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174509587] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:50:26,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:50:26,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 8] total 16 [2025-03-16 20:50:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775630575] [2025-03-16 20:50:26,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:50:26,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 20:50:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:26,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 20:50:26,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2025-03-16 20:50:26,869 INFO L87 Difference]: Start difference. First operand 1738 states and 2557 transitions. Second operand has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2025-03-16 20:50:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:28,384 INFO L93 Difference]: Finished difference Result 3195 states and 4704 transitions. [2025-03-16 20:50:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 20:50:28,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 668 [2025-03-16 20:50:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:28,387 INFO L225 Difference]: With dead ends: 3195 [2025-03-16 20:50:28,387 INFO L226 Difference]: Without dead ends: 1750 [2025-03-16 20:50:28,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1327 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-03-16 20:50:28,389 INFO L435 NwaCegarLoop]: 666 mSDtfsCounter, 1369 mSDsluCounter, 6620 mSDsCounter, 0 mSdLazyCounter, 4617 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 7286 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:28,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 7286 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 4617 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 20:50:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2025-03-16 20:50:28,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1747. [2025-03-16 20:50:28,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1730 states have (on average 1.4641618497109827) internal successors, (2533), 1730 states have internal predecessors, (2533), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2563 transitions. [2025-03-16 20:50:28,408 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2563 transitions. Word has length 668 [2025-03-16 20:50:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:28,408 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2563 transitions. [2025-03-16 20:50:28,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2025-03-16 20:50:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2563 transitions. [2025-03-16 20:50:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2025-03-16 20:50:28,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:28,412 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:28,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-16 20:50:28,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:28,613 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:28,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash -264473657, now seen corresponding path program 1 times [2025-03-16 20:50:28,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:28,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684961197] [2025-03-16 20:50:28,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:28,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:28,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 672 statements into 1 equivalence classes. [2025-03-16 20:50:28,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 672 of 672 statements. [2025-03-16 20:50:28,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:28,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 182 proven. 1 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-16 20:50:29,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684961197] [2025-03-16 20:50:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684961197] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813580435] [2025-03-16 20:50:29,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:29,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:29,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:29,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:29,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 20:50:30,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 672 statements into 1 equivalence classes. [2025-03-16 20:50:30,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 672 of 672 statements. [2025-03-16 20:50:30,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:30,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:30,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 3466 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 20:50:30,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 282 proven. 30 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2025-03-16 20:50:30,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 182 proven. 1 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-16 20:50:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813580435] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:50:30,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:50:30,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2025-03-16 20:50:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544190909] [2025-03-16 20:50:30,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:50:30,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 20:50:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:30,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 20:50:30,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:50:30,492 INFO L87 Difference]: Start difference. First operand 1747 states and 2563 transitions. Second operand has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:30,796 INFO L93 Difference]: Finished difference Result 2568 states and 3766 transitions. [2025-03-16 20:50:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 20:50:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 672 [2025-03-16 20:50:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:30,800 INFO L225 Difference]: With dead ends: 2568 [2025-03-16 20:50:30,800 INFO L226 Difference]: Without dead ends: 1750 [2025-03-16 20:50:30,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-16 20:50:30,801 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 10 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4522 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:30,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4522 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:30,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2025-03-16 20:50:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1750. [2025-03-16 20:50:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1750 states, 1733 states have (on average 1.4633583381419504) internal successors, (2536), 1733 states have internal predecessors, (2536), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2566 transitions. [2025-03-16 20:50:30,847 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2566 transitions. Word has length 672 [2025-03-16 20:50:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:30,847 INFO L471 AbstractCegarLoop]: Abstraction has 1750 states and 2566 transitions. [2025-03-16 20:50:30,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.44444444444444) internal successors, (589), 9 states have internal predecessors, (589), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2566 transitions. [2025-03-16 20:50:30,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2025-03-16 20:50:30,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:30,851 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:30,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-16 20:50:31,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-03-16 20:50:31,051 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:31,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1053792952, now seen corresponding path program 2 times [2025-03-16 20:50:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:31,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409669689] [2025-03-16 20:50:31,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:31,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:31,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 675 statements into 2 equivalence classes. [2025-03-16 20:50:31,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 175 of 675 statements. [2025-03-16 20:50:31,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:31,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2025-03-16 20:50:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409669689] [2025-03-16 20:50:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409669689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:50:31,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:50:31,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 20:50:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487260163] [2025-03-16 20:50:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:31,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 20:50:31,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:31,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 20:50:31,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:31,500 INFO L87 Difference]: Start difference. First operand 1750 states and 2566 transitions. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:31,866 INFO L93 Difference]: Finished difference Result 2579 states and 3777 transitions. [2025-03-16 20:50:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 20:50:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 675 [2025-03-16 20:50:31,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:31,869 INFO L225 Difference]: With dead ends: 2579 [2025-03-16 20:50:31,869 INFO L226 Difference]: Without dead ends: 1758 [2025-03-16 20:50:31,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 20:50:31,870 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 141 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 5391 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:31,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 5391 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2025-03-16 20:50:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1751. [2025-03-16 20:50:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1734 states have (on average 1.4636678200692042) internal successors, (2538), 1734 states have internal predecessors, (2538), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2568 transitions. [2025-03-16 20:50:31,893 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2568 transitions. Word has length 675 [2025-03-16 20:50:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:31,894 INFO L471 AbstractCegarLoop]: Abstraction has 1751 states and 2568 transitions. [2025-03-16 20:50:31,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2568 transitions. [2025-03-16 20:50:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2025-03-16 20:50:31,898 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:31,899 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:31,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 20:50:31,899 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:31,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2036575841, now seen corresponding path program 1 times [2025-03-16 20:50:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035016154] [2025-03-16 20:50:31,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:31,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:31,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 675 statements into 1 equivalence classes. [2025-03-16 20:50:32,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 675 of 675 statements. [2025-03-16 20:50:32,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:32,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 181 proven. 10 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-16 20:50:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035016154] [2025-03-16 20:50:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035016154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882828546] [2025-03-16 20:50:32,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:32,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:32,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:32,658 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:32,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 20:50:33,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 675 statements into 1 equivalence classes. [2025-03-16 20:50:33,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 675 of 675 statements. [2025-03-16 20:50:33,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:33,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:34,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 3493 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-16 20:50:34,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2025-03-16 20:50:34,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2025-03-16 20:50:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882828546] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 20:50:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 15 [2025-03-16 20:50:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620602424] [2025-03-16 20:50:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:50:34,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:50:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:34,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:50:34,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-16 20:50:34,162 INFO L87 Difference]: Start difference. First operand 1751 states and 2568 transitions. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:34,459 INFO L93 Difference]: Finished difference Result 2843 states and 4165 transitions. [2025-03-16 20:50:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 20:50:34,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 675 [2025-03-16 20:50:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:34,465 INFO L225 Difference]: With dead ends: 2843 [2025-03-16 20:50:34,465 INFO L226 Difference]: Without dead ends: 1869 [2025-03-16 20:50:34,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1342 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-16 20:50:34,467 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 40 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:34,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3606 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:50:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2025-03-16 20:50:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2025-03-16 20:50:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1852 states have (on average 1.461123110151188) internal successors, (2706), 1852 states have internal predecessors, (2706), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2736 transitions. [2025-03-16 20:50:34,506 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2736 transitions. Word has length 675 [2025-03-16 20:50:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:34,506 INFO L471 AbstractCegarLoop]: Abstraction has 1869 states and 2736 transitions. [2025-03-16 20:50:34,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-16 20:50:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2736 transitions. [2025-03-16 20:50:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2025-03-16 20:50:34,517 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:34,517 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:34,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-16 20:50:34,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-16 20:50:34,718 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:34,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1831252199, now seen corresponding path program 1 times [2025-03-16 20:50:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197610026] [2025-03-16 20:50:34,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:34,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 676 statements into 1 equivalence classes. [2025-03-16 20:50:34,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 676 of 676 statements. [2025-03-16 20:50:34,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:34,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 182 proven. 10 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-16 20:50:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197610026] [2025-03-16 20:50:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197610026] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313181974] [2025-03-16 20:50:35,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:50:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:35,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:35,502 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:35,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 20:50:36,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 676 statements into 1 equivalence classes. [2025-03-16 20:50:36,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 676 of 676 statements. [2025-03-16 20:50:36,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:50:36,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:36,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 3494 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-16 20:50:36,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 282 proven. 84 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2025-03-16 20:50:36,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 20:50:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 182 proven. 10 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2025-03-16 20:50:36,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313181974] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 20:50:36,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 20:50:36,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2025-03-16 20:50:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995304962] [2025-03-16 20:50:36,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 20:50:36,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 20:50:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:50:36,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 20:50:36,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-03-16 20:50:36,968 INFO L87 Difference]: Start difference. First operand 1869 states and 2736 transitions. Second operand has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:37,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:50:37,672 INFO L93 Difference]: Finished difference Result 2743 states and 4014 transitions. [2025-03-16 20:50:37,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 20:50:37,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 676 [2025-03-16 20:50:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:50:37,676 INFO L225 Difference]: With dead ends: 2743 [2025-03-16 20:50:37,676 INFO L226 Difference]: Without dead ends: 1873 [2025-03-16 20:50:37,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-03-16 20:50:37,677 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 22 mSDsluCounter, 10072 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10992 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:50:37,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10992 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:50:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2025-03-16 20:50:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1873. [2025-03-16 20:50:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1856 states have (on average 1.4601293103448276) internal successors, (2710), 1856 states have internal predecessors, (2710), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-16 20:50:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2740 transitions. [2025-03-16 20:50:37,699 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2740 transitions. Word has length 676 [2025-03-16 20:50:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:50:37,699 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 2740 transitions. [2025-03-16 20:50:37,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.611111111111114) internal successors, (605), 18 states have internal predecessors, (605), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 20:50:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2740 transitions. [2025-03-16 20:50:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2025-03-16 20:50:37,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:50:37,703 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:37,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-16 20:50:37,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:37,903 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:50:37,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:50:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 602435879, now seen corresponding path program 2 times [2025-03-16 20:50:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:50:37,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970378602] [2025-03-16 20:50:37,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:50:37,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 680 statements into 2 equivalence classes. [2025-03-16 20:50:38,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 176 of 680 statements. [2025-03-16 20:50:38,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:38,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 4 proven. 108 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2025-03-16 20:50:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:50:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970378602] [2025-03-16 20:50:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970378602] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:50:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626511455] [2025-03-16 20:50:39,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 20:50:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:50:39,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:50:39,145 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 20:50:39,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-16 20:50:40,247 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 680 statements into 2 equivalence classes. [2025-03-16 20:50:40,357 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 176 of 680 statements. [2025-03-16 20:50:40,357 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 20:50:40,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:50:40,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 113 conjuncts are in the unsatisfiable core [2025-03-16 20:50:40,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:50:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 72 proven. 108 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-16 20:50:43,126 INFO L312 TraceCheckSpWp]: Computing backward predicates...