./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:40:25,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:40:25,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:40:25,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:40:25,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:40:25,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:40:25,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:40:25,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:40:25,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:40:25,519 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:40:25,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:40:25,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:40:25,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:40:25,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:40:25,523 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:40:25,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:40:25,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:40:25,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:40:25,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:40:25,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:40:25,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:40:25,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:40:25,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:40:25,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:40:25,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:40:25,527 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:40:25,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:40:25,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:40:25,528 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:40:25,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:40:25,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:40:25,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:40:25,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:40:25,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:40:25,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:40:25,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:40:25,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:40:25,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:40:25,530 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:40:25,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:40:25,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:40:25,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:40:25,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a6204b8fe11d129da43c7784d578168196f39a9dd912e242b1920607a0dfe2c [2024-11-16 08:40:25,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:40:25,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:40:25,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:40:25,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:40:25,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:40:25,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:40:27,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:40:27,444 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:40:27,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:40:27,457 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51772b44f/4016d8b174974ee8beeafae754be96d1/FLAG48eecd040 [2024-11-16 08:40:27,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51772b44f/4016d8b174974ee8beeafae754be96d1 [2024-11-16 08:40:27,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:40:27,477 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:40:27,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:40:27,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:40:27,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:40:27,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572524cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27, skipping insertion in model container [2024-11-16 08:40:27,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:40:27,814 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2024-11-16 08:40:27,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:40:27,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:40:27,885 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4938,4951] [2024-11-16 08:40:27,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:40:27,923 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:40:27,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27 WrapperNode [2024-11-16 08:40:27,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:40:27,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:40:27,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:40:27,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:40:27,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,972 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 369 [2024-11-16 08:40:27,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:40:27,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:40:27,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:40:27,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:40:27,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:27,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,014 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 08:40:28,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,021 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:40:28,031 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:40:28,031 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:40:28,031 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:40:28,032 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (1/1) ... [2024-11-16 08:40:28,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:40:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:40:28,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:40:28,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:40:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:40:28,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:40:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:40:28,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:40:28,212 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:40:28,213 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:40:28,593 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L448: havoc main_~node1____CPAchecker_TMP_0~0#1; [2024-11-16 08:40:28,593 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L151: havoc main_~node1__m1~0#1;havoc main_~init__tmp~0#1; [2024-11-16 08:40:28,593 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L308: havoc main_~node4____CPAchecker_TMP_0~0#1; [2024-11-16 08:40:28,595 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L201: havoc main_~node4__m4~0#1; [2024-11-16 08:40:28,595 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L186: havoc main_~node3__m3~0#1; [2024-11-16 08:40:28,596 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L171: havoc main_~node2__m2~0#1; [2024-11-16 08:40:28,596 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L353: havoc main_~node3____CPAchecker_TMP_0~0#1; [2024-11-16 08:40:28,596 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L239: havoc main_~__tmp_1~0#1, main_~assert__arg~0#1;havoc main_~check__tmp~0#1; [2024-11-16 08:40:28,596 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L398: havoc main_~node2____CPAchecker_TMP_0~0#1; [2024-11-16 08:40:28,621 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-16 08:40:28,621 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:40:28,639 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:40:28,639 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:40:28,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:40:28 BoogieIcfgContainer [2024-11-16 08:40:28,640 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:40:28,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:40:28,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:40:28,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:40:28,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:40:27" (1/3) ... [2024-11-16 08:40:28,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5dce5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:40:28, skipping insertion in model container [2024-11-16 08:40:28,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:40:27" (2/3) ... [2024-11-16 08:40:28,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5dce5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:40:28, skipping insertion in model container [2024-11-16 08:40:28,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:40:28" (3/3) ... [2024-11-16 08:40:28,649 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-16 08:40:28,664 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:40:28,664 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:40:28,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:40:28,732 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;@23b32f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:40:28,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:40:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 84 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:28,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 08:40:28,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:28,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:28,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:28,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1725354124, now seen corresponding path program 1 times [2024-11-16 08:40:28,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:28,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884242503] [2024-11-16 08:40:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:28,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884242503] [2024-11-16 08:40:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884242503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:29,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:29,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970519738] [2024-11-16 08:40:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:29,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,214 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.6746987951807228) internal successors, (139), 84 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:29,276 INFO L93 Difference]: Finished difference Result 193 states and 302 transitions. [2024-11-16 08:40:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 08:40:29,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:29,321 INFO L225 Difference]: With dead ends: 193 [2024-11-16 08:40:29,321 INFO L226 Difference]: Without dead ends: 128 [2024-11-16 08:40:29,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,334 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 87 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:29,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 282 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-16 08:40:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-11-16 08:40:29,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.448) internal successors, (181), 125 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 181 transitions. [2024-11-16 08:40:29,390 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 181 transitions. Word has length 48 [2024-11-16 08:40:29,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:29,391 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 181 transitions. [2024-11-16 08:40:29,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 181 transitions. [2024-11-16 08:40:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:40:29,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:29,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:29,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:40:29,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:29,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1637723976, now seen corresponding path program 1 times [2024-11-16 08:40:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:29,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867154432] [2024-11-16 08:40:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:29,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:29,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867154432] [2024-11-16 08:40:29,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867154432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:29,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:29,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:29,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421435167] [2024-11-16 08:40:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:29,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:29,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:29,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:29,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,544 INFO L87 Difference]: Start difference. First operand 126 states and 181 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:29,585 INFO L93 Difference]: Finished difference Result 310 states and 465 transitions. [2024-11-16 08:40:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:40:29,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:29,588 INFO L225 Difference]: With dead ends: 310 [2024-11-16 08:40:29,588 INFO L226 Difference]: Without dead ends: 210 [2024-11-16 08:40:29,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,592 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 65 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:29,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 240 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:29,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-16 08:40:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2024-11-16 08:40:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.4830917874396135) internal successors, (307), 207 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 307 transitions. [2024-11-16 08:40:29,619 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 307 transitions. Word has length 49 [2024-11-16 08:40:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:29,620 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 307 transitions. [2024-11-16 08:40:29,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 307 transitions. [2024-11-16 08:40:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 08:40:29,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:29,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:29,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:40:29,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:29,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1947521337, now seen corresponding path program 1 times [2024-11-16 08:40:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467773000] [2024-11-16 08:40:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:29,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:29,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467773000] [2024-11-16 08:40:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467773000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:29,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:29,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683412780] [2024-11-16 08:40:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:29,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:29,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,746 INFO L87 Difference]: Start difference. First operand 208 states and 307 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:29,775 INFO L93 Difference]: Finished difference Result 540 states and 817 transitions. [2024-11-16 08:40:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 08:40:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:29,778 INFO L225 Difference]: With dead ends: 540 [2024-11-16 08:40:29,781 INFO L226 Difference]: Without dead ends: 358 [2024-11-16 08:40:29,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:29,783 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 60 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:29,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 236 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-16 08:40:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2024-11-16 08:40:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.495774647887324) internal successors, (531), 355 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 531 transitions. [2024-11-16 08:40:29,821 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 531 transitions. Word has length 50 [2024-11-16 08:40:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:29,821 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 531 transitions. [2024-11-16 08:40:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 531 transitions. [2024-11-16 08:40:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 08:40:29,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:29,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:29,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:40:29,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:29,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2028927621, now seen corresponding path program 1 times [2024-11-16 08:40:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834735342] [2024-11-16 08:40:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834735342] [2024-11-16 08:40:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834735342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:29,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:29,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628479975] [2024-11-16 08:40:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:29,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:29,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:29,998 INFO L87 Difference]: Start difference. First operand 356 states and 531 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:30,219 INFO L93 Difference]: Finished difference Result 2996 states and 4571 transitions. [2024-11-16 08:40:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:40:30,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 08:40:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:30,231 INFO L225 Difference]: With dead ends: 2996 [2024-11-16 08:40:30,231 INFO L226 Difference]: Without dead ends: 2666 [2024-11-16 08:40:30,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:40:30,238 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 663 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:30,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1301 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2024-11-16 08:40:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 684. [2024-11-16 08:40:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4919472913616398) internal successors, (1019), 683 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1019 transitions. [2024-11-16 08:40:30,290 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1019 transitions. Word has length 51 [2024-11-16 08:40:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:30,290 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1019 transitions. [2024-11-16 08:40:30,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1019 transitions. [2024-11-16 08:40:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 08:40:30,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:30,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:30,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:40:30,294 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:30,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2038034627, now seen corresponding path program 1 times [2024-11-16 08:40:30,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:30,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334399027] [2024-11-16 08:40:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:30,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334399027] [2024-11-16 08:40:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334399027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:30,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:30,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307851913] [2024-11-16 08:40:30,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:30,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:30,605 INFO L87 Difference]: Start difference. First operand 684 states and 1019 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:30,728 INFO L93 Difference]: Finished difference Result 1344 states and 2013 transitions. [2024-11-16 08:40:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:40:30,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 08:40:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:30,732 INFO L225 Difference]: With dead ends: 1344 [2024-11-16 08:40:30,733 INFO L226 Difference]: Without dead ends: 686 [2024-11-16 08:40:30,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:40:30,735 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 122 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:30,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 382 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-16 08:40:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2024-11-16 08:40:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4802342606149341) internal successors, (1011), 683 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1011 transitions. [2024-11-16 08:40:30,764 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1011 transitions. Word has length 54 [2024-11-16 08:40:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:30,764 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1011 transitions. [2024-11-16 08:40:30,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1011 transitions. [2024-11-16 08:40:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 08:40:30,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:30,767 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:30,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:40:30,767 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:30,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash -523140969, now seen corresponding path program 1 times [2024-11-16 08:40:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:30,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141244000] [2024-11-16 08:40:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:30,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:30,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:30,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141244000] [2024-11-16 08:40:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141244000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:30,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714188267] [2024-11-16 08:40:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:30,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:30,866 INFO L87 Difference]: Start difference. First operand 684 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:30,887 INFO L93 Difference]: Finished difference Result 1840 states and 2725 transitions. [2024-11-16 08:40:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:30,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-16 08:40:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:30,892 INFO L225 Difference]: With dead ends: 1840 [2024-11-16 08:40:30,893 INFO L226 Difference]: Without dead ends: 1182 [2024-11-16 08:40:30,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:30,895 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 72 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:30,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-11-16 08:40:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1180. [2024-11-16 08:40:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 1.4614079728583544) internal successors, (1723), 1179 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1723 transitions. [2024-11-16 08:40:30,920 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1723 transitions. Word has length 54 [2024-11-16 08:40:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:30,921 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1723 transitions. [2024-11-16 08:40:30,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1723 transitions. [2024-11-16 08:40:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 08:40:30,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:30,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:30,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:40:30,923 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -4965536, now seen corresponding path program 1 times [2024-11-16 08:40:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671136552] [2024-11-16 08:40:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671136552] [2024-11-16 08:40:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671136552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:31,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444318948] [2024-11-16 08:40:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:31,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:31,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:31,013 INFO L87 Difference]: Start difference. First operand 1180 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:31,054 INFO L93 Difference]: Finished difference Result 2890 states and 4239 transitions. [2024-11-16 08:40:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-16 08:40:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:31,060 INFO L225 Difference]: With dead ends: 2890 [2024-11-16 08:40:31,061 INFO L226 Difference]: Without dead ends: 1736 [2024-11-16 08:40:31,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:31,063 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:31,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-11-16 08:40:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1718. [2024-11-16 08:40:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 1.4472917880023297) internal successors, (2485), 1717 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2485 transitions. [2024-11-16 08:40:31,093 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2485 transitions. Word has length 56 [2024-11-16 08:40:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:31,093 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2485 transitions. [2024-11-16 08:40:31,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2485 transitions. [2024-11-16 08:40:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:40:31,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:31,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:31,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:40:31,095 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:31,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:31,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1774527213, now seen corresponding path program 1 times [2024-11-16 08:40:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:31,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212551348] [2024-11-16 08:40:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:31,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:31,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212551348] [2024-11-16 08:40:31,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212551348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 08:40:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465385251] [2024-11-16 08:40:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:31,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:40:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:40:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:40:31,187 INFO L87 Difference]: Start difference. First operand 1718 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:31,272 INFO L93 Difference]: Finished difference Result 3408 states and 4942 transitions. [2024-11-16 08:40:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:40:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 08:40:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:31,278 INFO L225 Difference]: With dead ends: 3408 [2024-11-16 08:40:31,278 INFO L226 Difference]: Without dead ends: 1718 [2024-11-16 08:40:31,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:40:31,283 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 293 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:31,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 73 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2024-11-16 08:40:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1718. [2024-11-16 08:40:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1717 states have (on average 1.4286546301688992) internal successors, (2453), 1717 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2453 transitions. [2024-11-16 08:40:31,313 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2453 transitions. Word has length 57 [2024-11-16 08:40:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:31,313 INFO L471 AbstractCegarLoop]: Abstraction has 1718 states and 2453 transitions. [2024-11-16 08:40:31,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2453 transitions. [2024-11-16 08:40:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 08:40:31,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:31,314 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:31,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:40:31,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1590898606, now seen corresponding path program 1 times [2024-11-16 08:40:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422836267] [2024-11-16 08:40:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:31,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422836267] [2024-11-16 08:40:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422836267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:31,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:31,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:40:31,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084115955] [2024-11-16 08:40:31,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:31,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:40:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:40:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:40:31,584 INFO L87 Difference]: Start difference. First operand 1718 states and 2453 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:31,614 INFO L93 Difference]: Finished difference Result 1848 states and 2614 transitions. [2024-11-16 08:40:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:40:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 08:40:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:31,622 INFO L225 Difference]: With dead ends: 1848 [2024-11-16 08:40:31,622 INFO L226 Difference]: Without dead ends: 1846 [2024-11-16 08:40:31,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:40:31,623 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:31,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-16 08:40:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1846. [2024-11-16 08:40:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.394579945799458) internal successors, (2573), 1845 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2573 transitions. [2024-11-16 08:40:31,655 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2573 transitions. Word has length 57 [2024-11-16 08:40:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:31,656 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2573 transitions. [2024-11-16 08:40:31,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2573 transitions. [2024-11-16 08:40:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:40:31,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:31,657 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:40:31,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:40:31,658 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:31,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash -285287287, now seen corresponding path program 1 times [2024-11-16 08:40:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:31,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235485460] [2024-11-16 08:40:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:40:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235485460] [2024-11-16 08:40:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235485460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:31,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861872590] [2024-11-16 08:40:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:31,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:31,819 INFO L87 Difference]: Start difference. First operand 1846 states and 2573 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:31,926 INFO L93 Difference]: Finished difference Result 9504 states and 13266 transitions. [2024-11-16 08:40:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:40:31,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 08:40:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:31,948 INFO L225 Difference]: With dead ends: 9504 [2024-11-16 08:40:31,948 INFO L226 Difference]: Without dead ends: 7686 [2024-11-16 08:40:31,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:40:31,952 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 472 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:31,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 656 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7686 states. [2024-11-16 08:40:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7686 to 3662. [2024-11-16 08:40:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 1.3911499590275882) internal successors, (5093), 3661 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5093 transitions. [2024-11-16 08:40:32,041 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5093 transitions. Word has length 80 [2024-11-16 08:40:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:32,041 INFO L471 AbstractCegarLoop]: Abstraction has 3662 states and 5093 transitions. [2024-11-16 08:40:32,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5093 transitions. [2024-11-16 08:40:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:40:32,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:32,043 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:40:32,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:40:32,043 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:32,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1866432553, now seen corresponding path program 1 times [2024-11-16 08:40:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:32,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421849381] [2024-11-16 08:40:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:40:32,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:32,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421849381] [2024-11-16 08:40:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421849381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:32,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608317592] [2024-11-16 08:40:32,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:32,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:32,172 INFO L87 Difference]: Start difference. First operand 3662 states and 5093 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:32,287 INFO L93 Difference]: Finished difference Result 11320 states and 15786 transitions. [2024-11-16 08:40:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:40:32,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 08:40:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:32,319 INFO L225 Difference]: With dead ends: 11320 [2024-11-16 08:40:32,323 INFO L226 Difference]: Without dead ends: 9502 [2024-11-16 08:40:32,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:40:32,331 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 504 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:32,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 601 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2024-11-16 08:40:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 6398. [2024-11-16 08:40:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 6397 states have (on average 1.3851805533843988) internal successors, (8861), 6397 states have internal predecessors, (8861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 8861 transitions. [2024-11-16 08:40:32,473 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 8861 transitions. Word has length 80 [2024-11-16 08:40:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:32,473 INFO L471 AbstractCegarLoop]: Abstraction has 6398 states and 8861 transitions. [2024-11-16 08:40:32,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 8861 transitions. [2024-11-16 08:40:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:40:32,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:32,475 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:40:32,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:40:32,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:32,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2074276809, now seen corresponding path program 1 times [2024-11-16 08:40:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271710651] [2024-11-16 08:40:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 08:40:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271710651] [2024-11-16 08:40:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271710651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:32,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642161729] [2024-11-16 08:40:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:32,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:32,601 INFO L87 Difference]: Start difference. First operand 6398 states and 8861 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:32,730 INFO L93 Difference]: Finished difference Result 13136 states and 18306 transitions. [2024-11-16 08:40:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:40:32,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 08:40:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:32,789 INFO L225 Difference]: With dead ends: 13136 [2024-11-16 08:40:32,790 INFO L226 Difference]: Without dead ends: 11318 [2024-11-16 08:40:32,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:40:32,794 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 478 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:32,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 644 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11318 states. [2024-11-16 08:40:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11318 to 8214. [2024-11-16 08:40:32,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 8213 states have (on average 1.3857299403384877) internal successors, (11381), 8213 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 11381 transitions. [2024-11-16 08:40:32,959 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 11381 transitions. Word has length 80 [2024-11-16 08:40:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:32,959 INFO L471 AbstractCegarLoop]: Abstraction has 8214 states and 11381 transitions. [2024-11-16 08:40:32,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 11381 transitions. [2024-11-16 08:40:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 08:40:32,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:32,961 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:32,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:40:32,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:32,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash -759312870, now seen corresponding path program 1 times [2024-11-16 08:40:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205034650] [2024-11-16 08:40:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:40:33,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205034650] [2024-11-16 08:40:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205034650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:33,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:33,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:40:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319379425] [2024-11-16 08:40:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:33,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:40:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:40:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:40:33,080 INFO L87 Difference]: Start difference. First operand 8214 states and 11381 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:33,206 INFO L93 Difference]: Finished difference Result 13880 states and 19354 transitions. [2024-11-16 08:40:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:40:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-16 08:40:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:33,228 INFO L225 Difference]: With dead ends: 13880 [2024-11-16 08:40:33,228 INFO L226 Difference]: Without dead ends: 12598 [2024-11-16 08:40:33,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:40:33,235 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 459 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:33,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 749 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:40:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12598 states. [2024-11-16 08:40:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12598 to 9494. [2024-11-16 08:40:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9494 states, 9493 states have (on average 1.3876540608869694) internal successors, (13173), 9493 states have internal predecessors, (13173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9494 states to 9494 states and 13173 transitions. [2024-11-16 08:40:33,423 INFO L78 Accepts]: Start accepts. Automaton has 9494 states and 13173 transitions. Word has length 81 [2024-11-16 08:40:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:33,423 INFO L471 AbstractCegarLoop]: Abstraction has 9494 states and 13173 transitions. [2024-11-16 08:40:33,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 9494 states and 13173 transitions. [2024-11-16 08:40:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:40:33,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:33,427 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:40:33,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:40:33,427 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:33,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash -723000795, now seen corresponding path program 1 times [2024-11-16 08:40:33,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087881656] [2024-11-16 08:40:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:33,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087881656] [2024-11-16 08:40:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087881656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925902675] [2024-11-16 08:40:33,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:33,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:33,514 INFO L87 Difference]: Start difference. First operand 9494 states and 13173 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:33,558 INFO L93 Difference]: Finished difference Result 16573 states and 23074 transitions. [2024-11-16 08:40:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 08:40:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:33,570 INFO L225 Difference]: With dead ends: 16573 [2024-11-16 08:40:33,570 INFO L226 Difference]: Without dead ends: 7107 [2024-11-16 08:40:33,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:33,581 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 51 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:33,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 236 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2024-11-16 08:40:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 7105. [2024-11-16 08:40:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 7104 states have (on average 1.3849943693693694) internal successors, (9839), 7104 states have internal predecessors, (9839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 9839 transitions. [2024-11-16 08:40:33,725 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 9839 transitions. Word has length 82 [2024-11-16 08:40:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:33,726 INFO L471 AbstractCegarLoop]: Abstraction has 7105 states and 9839 transitions. [2024-11-16 08:40:33,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 9839 transitions. [2024-11-16 08:40:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 08:40:33,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:33,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:33,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:40:33,728 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:33,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1148194774, now seen corresponding path program 1 times [2024-11-16 08:40:33,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:33,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970564098] [2024-11-16 08:40:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970564098] [2024-11-16 08:40:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970564098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:40:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355713465] [2024-11-16 08:40:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:40:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:40:34,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:40:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:40:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:34,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 08:40:34,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:40:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:34,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:40:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:35,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355713465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:40:35,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:40:35,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-16 08:40:35,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361295251] [2024-11-16 08:40:35,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:40:35,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 08:40:35,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 08:40:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:40:35,799 INFO L87 Difference]: Start difference. First operand 7105 states and 9839 transitions. Second operand has 26 states, 26 states have (on average 9.115384615384615) internal successors, (237), 25 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:40,593 INFO L93 Difference]: Finished difference Result 71368 states and 99867 transitions. [2024-11-16 08:40:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-16 08:40:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.115384615384615) internal successors, (237), 25 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-16 08:40:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:40,716 INFO L225 Difference]: With dead ends: 71368 [2024-11-16 08:40:40,717 INFO L226 Difference]: Without dead ends: 64299 [2024-11-16 08:40:40,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7207 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3413, Invalid=17179, Unknown=0, NotChecked=0, Total=20592 [2024-11-16 08:40:40,748 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 4415 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:40,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4415 Valid, 1128 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 08:40:40,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64299 states. [2024-11-16 08:40:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64299 to 40523. [2024-11-16 08:40:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40523 states, 40522 states have (on average 1.3648635309214747) internal successors, (55307), 40522 states have internal predecessors, (55307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 55307 transitions. [2024-11-16 08:40:41,600 INFO L78 Accepts]: Start accepts. Automaton has 40523 states and 55307 transitions. Word has length 83 [2024-11-16 08:40:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:41,600 INFO L471 AbstractCegarLoop]: Abstraction has 40523 states and 55307 transitions. [2024-11-16 08:40:41,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.115384615384615) internal successors, (237), 25 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 40523 states and 55307 transitions. [2024-11-16 08:40:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 08:40:41,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:41,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:41,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:40:41,805 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,SelfDestructingSolverStorable14 [2024-11-16 08:40:41,806 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:41,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash 999935574, now seen corresponding path program 1 times [2024-11-16 08:40:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23108126] [2024-11-16 08:40:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:42,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:42,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23108126] [2024-11-16 08:40:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23108126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:40:42,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730316283] [2024-11-16 08:40:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:42,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:40:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:40:42,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:40:42,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:40:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:42,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 08:40:42,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:40:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:42,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:40:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730316283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:40:43,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:40:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-16 08:40:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212550536] [2024-11-16 08:40:43,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:40:43,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 08:40:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 08:40:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-16 08:40:43,582 INFO L87 Difference]: Start difference. First operand 40523 states and 55307 transitions. Second operand has 26 states, 26 states have (on average 8.192307692307692) internal successors, (213), 25 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:47,088 INFO L93 Difference]: Finished difference Result 330518 states and 449584 transitions. [2024-11-16 08:40:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-16 08:40:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.192307692307692) internal successors, (213), 25 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-16 08:40:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:47,656 INFO L225 Difference]: With dead ends: 330518 [2024-11-16 08:40:47,656 INFO L226 Difference]: Without dead ends: 290064 [2024-11-16 08:40:47,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1671, Invalid=7641, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 08:40:47,878 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 3252 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3252 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:47,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3252 Valid, 1510 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 08:40:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290064 states. [2024-11-16 08:40:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290064 to 203698. [2024-11-16 08:40:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203698 states, 203697 states have (on average 1.3479530871834147) internal successors, (274574), 203697 states have internal predecessors, (274574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203698 states to 203698 states and 274574 transitions. [2024-11-16 08:40:51,692 INFO L78 Accepts]: Start accepts. Automaton has 203698 states and 274574 transitions. Word has length 83 [2024-11-16 08:40:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:51,693 INFO L471 AbstractCegarLoop]: Abstraction has 203698 states and 274574 transitions. [2024-11-16 08:40:51,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.192307692307692) internal successors, (213), 25 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 203698 states and 274574 transitions. [2024-11-16 08:40:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:40:51,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:51,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:51,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:40:51,901 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,SelfDestructingSolverStorable15 [2024-11-16 08:40:51,902 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:51,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash -661336861, now seen corresponding path program 1 times [2024-11-16 08:40:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615367838] [2024-11-16 08:40:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:52,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615367838] [2024-11-16 08:40:52,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615367838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:40:52,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:40:52,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:40:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75789214] [2024-11-16 08:40:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:40:52,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:40:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:40:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:40:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:52,250 INFO L87 Difference]: Start difference. First operand 203698 states and 274574 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:40:53,232 INFO L93 Difference]: Finished difference Result 317057 states and 427487 transitions. [2024-11-16 08:40:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:40:53,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-16 08:40:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:40:53,396 INFO L225 Difference]: With dead ends: 317057 [2024-11-16 08:40:53,396 INFO L226 Difference]: Without dead ends: 113698 [2024-11-16 08:40:53,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:40:53,919 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 42 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:40:53,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 221 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:40:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113698 states. [2024-11-16 08:40:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113698 to 113696. [2024-11-16 08:40:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113696 states, 113695 states have (on average 1.330243194511632) internal successors, (151242), 113695 states have internal predecessors, (151242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113696 states to 113696 states and 151242 transitions. [2024-11-16 08:40:55,228 INFO L78 Accepts]: Start accepts. Automaton has 113696 states and 151242 transitions. Word has length 85 [2024-11-16 08:40:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:40:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 113696 states and 151242 transitions. [2024-11-16 08:40:55,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:40:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 113696 states and 151242 transitions. [2024-11-16 08:40:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:40:55,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:40:55,234 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:40:55,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:40:55,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:40:55,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:40:55,235 INFO L85 PathProgramCache]: Analyzing trace with hash -318859293, now seen corresponding path program 1 times [2024-11-16 08:40:55,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:40:55,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205971950] [2024-11-16 08:40:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:40:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:40:56,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205971950] [2024-11-16 08:40:56,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205971950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:40:56,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188048889] [2024-11-16 08:40:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:40:56,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:40:56,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:40:56,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:40:56,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:40:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:40:56,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 08:40:56,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:40:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:40:58,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:41:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188048889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:41:00,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:41:00,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 18] total 44 [2024-11-16 08:41:00,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860181143] [2024-11-16 08:41:00,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:41:00,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 08:41:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:41:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 08:41:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 08:41:00,448 INFO L87 Difference]: Start difference. First operand 113696 states and 151242 transitions. Second operand has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:41:26,935 INFO L93 Difference]: Finished difference Result 355166 states and 474365 transitions. [2024-11-16 08:41:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2024-11-16 08:41:26,936 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-16 08:41:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:41:27,305 INFO L225 Difference]: With dead ends: 355166 [2024-11-16 08:41:27,305 INFO L226 Difference]: Without dead ends: 293334 [2024-11-16 08:41:27,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55134 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=18251, Invalid=104599, Unknown=0, NotChecked=0, Total=122850 [2024-11-16 08:41:27,363 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 12938 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12938 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-16 08:41:27,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12938 Valid, 3373 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-16 08:41:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293334 states. [2024-11-16 08:41:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293334 to 149002. [2024-11-16 08:41:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149002 states, 149001 states have (on average 1.3351051335225939) internal successors, (198932), 149001 states have internal predecessors, (198932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149002 states to 149002 states and 198932 transitions. [2024-11-16 08:41:30,301 INFO L78 Accepts]: Start accepts. Automaton has 149002 states and 198932 transitions. Word has length 85 [2024-11-16 08:41:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:41:30,301 INFO L471 AbstractCegarLoop]: Abstraction has 149002 states and 198932 transitions. [2024-11-16 08:41:30,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 149002 states and 198932 transitions. [2024-11-16 08:41:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:41:30,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:41:30,309 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:41:30,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:41:30,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:41:30,514 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:41:30,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:41:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash -762746333, now seen corresponding path program 1 times [2024-11-16 08:41:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:41:30,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684972708] [2024-11-16 08:41:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:41:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:41:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:41:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:30,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:41:30,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684972708] [2024-11-16 08:41:30,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684972708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:41:30,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:41:30,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:41:30,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202267113] [2024-11-16 08:41:30,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:41:30,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:41:30,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:41:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:41:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:41:30,644 INFO L87 Difference]: Start difference. First operand 149002 states and 198932 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:41:31,225 INFO L93 Difference]: Finished difference Result 237398 states and 316738 transitions. [2024-11-16 08:41:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:41:31,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-16 08:41:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:41:31,353 INFO L225 Difference]: With dead ends: 237398 [2024-11-16 08:41:31,353 INFO L226 Difference]: Without dead ends: 88735 [2024-11-16 08:41:31,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:41:31,442 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 33 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:41:31,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 206 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:41:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88735 states. [2024-11-16 08:41:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88735 to 88733. [2024-11-16 08:41:32,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88733 states, 88732 states have (on average 1.3177545868457827) internal successors, (116927), 88732 states have internal predecessors, (116927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88733 states to 88733 states and 116927 transitions. [2024-11-16 08:41:32,734 INFO L78 Accepts]: Start accepts. Automaton has 88733 states and 116927 transitions. Word has length 85 [2024-11-16 08:41:32,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:41:32,734 INFO L471 AbstractCegarLoop]: Abstraction has 88733 states and 116927 transitions. [2024-11-16 08:41:32,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 88733 states and 116927 transitions. [2024-11-16 08:41:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:41:32,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:41:32,737 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:41:32,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 08:41:32,738 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:41:32,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:41:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -356647133, now seen corresponding path program 1 times [2024-11-16 08:41:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:41:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467426080] [2024-11-16 08:41:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:41:32,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:41:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:41:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:41:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467426080] [2024-11-16 08:41:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467426080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:41:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:41:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:41:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166313420] [2024-11-16 08:41:33,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:41:33,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:41:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:41:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:41:33,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:41:33,315 INFO L87 Difference]: Start difference. First operand 88733 states and 116927 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:41:33,620 INFO L93 Difference]: Finished difference Result 141533 states and 185893 transitions. [2024-11-16 08:41:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:41:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-16 08:41:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:41:33,696 INFO L225 Difference]: With dead ends: 141533 [2024-11-16 08:41:33,697 INFO L226 Difference]: Without dead ends: 53139 [2024-11-16 08:41:33,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:41:33,751 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 26 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:41:33,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 191 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:41:33,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53139 states. [2024-11-16 08:41:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53139 to 53137. [2024-11-16 08:41:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53137 states, 53136 states have (on average 1.2965033122553449) internal successors, (68891), 53136 states have internal predecessors, (68891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53137 states to 53137 states and 68891 transitions. [2024-11-16 08:41:34,809 INFO L78 Accepts]: Start accepts. Automaton has 53137 states and 68891 transitions. Word has length 85 [2024-11-16 08:41:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:41:34,809 INFO L471 AbstractCegarLoop]: Abstraction has 53137 states and 68891 transitions. [2024-11-16 08:41:34,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:41:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 53137 states and 68891 transitions. [2024-11-16 08:41:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:41:34,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:41:34,812 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:41:34,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 08:41:34,812 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:41:34,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:41:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1329613347, now seen corresponding path program 1 times [2024-11-16 08:41:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:41:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496244500] [2024-11-16 08:41:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:41:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:41:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:41:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:41:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496244500] [2024-11-16 08:41:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496244500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:41:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014827575] [2024-11-16 08:41:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:41:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:41:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:41:35,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:41:35,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:41:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:41:35,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-16 08:41:35,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:41:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:38,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:41:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:41:40,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014827575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:41:40,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:41:40,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26, 27] total 62 [2024-11-16 08:41:40,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133976302] [2024-11-16 08:41:40,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:41:40,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 08:41:40,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:41:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 08:41:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=3203, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 08:41:40,949 INFO L87 Difference]: Start difference. First operand 53137 states and 68891 transitions. Second operand has 62 states, 62 states have (on average 3.725806451612903) internal successors, (231), 62 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)