./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/eca-rers2012/Problem02_label09.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'f81dd1ef8995b0b07e1ce6d856db2fedb8abb1366230168a1e5c2e68aff05e24'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem02_label09.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f81dd1ef8995b0b07e1ce6d856db2fedb8abb1366230168a1e5c2e68aff05e24 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:54:46,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:54:46,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:54:46,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:54:46,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:54:46,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:54:46,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:54:46,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:54:46,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:54:46,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:54:46,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:54:46,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:54:46,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:54:46,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:54:46,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:54:46,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:54:46,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:54:46,134 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> f81dd1ef8995b0b07e1ce6d856db2fedb8abb1366230168a1e5c2e68aff05e24 [2024-11-06 18:54:46,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:54:46,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:54:46,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:54:46,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:54:46,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:54:46,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2024-11-06 18:54:47,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:54:48,038 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:54:48,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2024-11-06 18:54:48,058 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/360c9e98d/45df80ca1d054b42800eee4f459ed8a8/FLAGef91a7614 [2024-11-06 18:54:48,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/360c9e98d/45df80ca1d054b42800eee4f459ed8a8 [2024-11-06 18:54:48,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:54:48,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:54:48,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:54:48,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:54:48,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:54:48,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19769ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48, skipping insertion in model container [2024-11-06 18:54:48,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:54:48,400 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c[19170,19183] [2024-11-06 18:54:48,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:54:48,445 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:54:48,520 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label09.c[19170,19183] [2024-11-06 18:54:48,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:54:48,540 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:54:48,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48 WrapperNode [2024-11-06 18:54:48,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:54:48,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:54:48,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:54:48,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:54:48,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,615 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-11-06 18:54:48,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:54:48,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:54:48,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:54:48,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:54:48,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,663 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]. [2024-11-06 18:54:48,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:54:48,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:54:48,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:54:48,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:54:48,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (1/1) ... [2024-11-06 18:54:48,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:54:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:54:48,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:54:48,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:54:48,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:54:48,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:54:48,857 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:54:48,859 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:54:49,900 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-06 18:54:49,900 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:54:49,920 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:54:49,921 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 18:54:49,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:54:49 BoogieIcfgContainer [2024-11-06 18:54:49,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:54:49,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:54:49,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:54:49,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:54:49,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:54:48" (1/3) ... [2024-11-06 18:54:49,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226acf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:54:49, skipping insertion in model container [2024-11-06 18:54:49,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:54:48" (2/3) ... [2024-11-06 18:54:49,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226acf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:54:49, skipping insertion in model container [2024-11-06 18:54:49,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:54:49" (3/3) ... [2024-11-06 18:54:49,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2024-11-06 18:54:49,945 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:54:49,945 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:54:50,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:54:50,023 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;@3af80bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:54:50,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:54:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-06 18:54:50,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:50,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:50,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -701342005, now seen corresponding path program 1 times [2024-11-06 18:54:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489258141] [2024-11-06 18:54:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:50,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489258141] [2024-11-06 18:54:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489258141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:54:50,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772862118] [2024-11-06 18:54:50,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:50,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:50,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:50,690 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6666666666666667) internal successors, (375), 226 states have internal predecessors, (375), 0 states have call successors, (0), 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 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:51,399 INFO L93 Difference]: Finished difference Result 596 states and 1030 transitions. [2024-11-06 18:54:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-06 18:54:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:51,410 INFO L225 Difference]: With dead ends: 596 [2024-11-06 18:54:51,410 INFO L226 Difference]: Without dead ends: 305 [2024-11-06 18:54:51,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:51,421 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 123 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:51,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 89 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:54:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-06 18:54:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-06 18:54:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.5263157894736843) internal successors, (464), 304 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 464 transitions. [2024-11-06 18:54:51,487 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 464 transitions. Word has length 121 [2024-11-06 18:54:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:51,489 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 464 transitions. [2024-11-06 18:54:51,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 464 transitions. [2024-11-06 18:54:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-06 18:54:51,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:51,492 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:51,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:54:51,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:51,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash -446392561, now seen corresponding path program 1 times [2024-11-06 18:54:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951178873] [2024-11-06 18:54:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951178873] [2024-11-06 18:54:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951178873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:51,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:51,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:54:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109916795] [2024-11-06 18:54:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:51,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:51,763 INFO L87 Difference]: Start difference. First operand 305 states and 464 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:52,279 INFO L93 Difference]: Finished difference Result 900 states and 1374 transitions. [2024-11-06 18:54:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-11-06 18:54:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:52,284 INFO L225 Difference]: With dead ends: 900 [2024-11-06 18:54:52,285 INFO L226 Difference]: Without dead ends: 597 [2024-11-06 18:54:52,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:52,289 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 191 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:52,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 72 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:54:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-06 18:54:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 456. [2024-11-06 18:54:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.4901098901098901) internal successors, (678), 455 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 678 transitions. [2024-11-06 18:54:52,332 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 678 transitions. Word has length 132 [2024-11-06 18:54:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:52,333 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 678 transitions. [2024-11-06 18:54:52,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 678 transitions. [2024-11-06 18:54:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-06 18:54:52,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:52,335 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:52,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:54:52,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:52,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash -944126998, now seen corresponding path program 1 times [2024-11-06 18:54:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589663901] [2024-11-06 18:54:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:52,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:52,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589663901] [2024-11-06 18:54:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589663901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:52,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:52,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:54:52,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384268521] [2024-11-06 18:54:52,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:52,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:52,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:52,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:52,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:52,521 INFO L87 Difference]: Start difference. First operand 456 states and 678 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 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) [2024-11-06 18:54:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:53,013 INFO L93 Difference]: Finished difference Result 1350 states and 2015 transitions. [2024-11-06 18:54:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:53,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 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) Word has length 139 [2024-11-06 18:54:53,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:53,019 INFO L225 Difference]: With dead ends: 1350 [2024-11-06 18:54:53,019 INFO L226 Difference]: Without dead ends: 896 [2024-11-06 18:54:53,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:53,021 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 156 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:53,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 124 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:54:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-06 18:54:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 749. [2024-11-06 18:54:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4398395721925135) internal successors, (1077), 748 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1077 transitions. [2024-11-06 18:54:53,060 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1077 transitions. Word has length 139 [2024-11-06 18:54:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:53,061 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1077 transitions. [2024-11-06 18:54:53,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 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) [2024-11-06 18:54:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1077 transitions. [2024-11-06 18:54:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-06 18:54:53,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:53,067 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:53,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:54:53,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:53,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash -175879692, now seen corresponding path program 1 times [2024-11-06 18:54:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573634129] [2024-11-06 18:54:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:53,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:53,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573634129] [2024-11-06 18:54:53,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573634129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:53,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:53,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:54:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804254001] [2024-11-06 18:54:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:53,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:53,183 INFO L87 Difference]: Start difference. First operand 749 states and 1077 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:53,643 INFO L93 Difference]: Finished difference Result 2199 states and 3171 transitions. [2024-11-06 18:54:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2024-11-06 18:54:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:53,650 INFO L225 Difference]: With dead ends: 2199 [2024-11-06 18:54:53,650 INFO L226 Difference]: Without dead ends: 1452 [2024-11-06 18:54:53,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:53,655 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 176 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:53,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 77 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:54:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2024-11-06 18:54:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1312. [2024-11-06 18:54:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 1.3646071700991609) internal successors, (1789), 1311 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1789 transitions. [2024-11-06 18:54:53,696 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1789 transitions. Word has length 143 [2024-11-06 18:54:53,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:53,696 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 1789 transitions. [2024-11-06 18:54:53,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1789 transitions. [2024-11-06 18:54:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-06 18:54:53,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:53,702 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:53,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:54:53,702 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:53,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 628161490, now seen corresponding path program 1 times [2024-11-06 18:54:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245077648] [2024-11-06 18:54:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 18:54:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:53,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245077648] [2024-11-06 18:54:53,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245077648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:53,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:53,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:53,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395307565] [2024-11-06 18:54:53,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:53,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:53,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:53,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:53,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:53,854 INFO L87 Difference]: Start difference. First operand 1312 states and 1789 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:54,355 INFO L93 Difference]: Finished difference Result 3742 states and 5086 transitions. [2024-11-06 18:54:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-06 18:54:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:54,364 INFO L225 Difference]: With dead ends: 3742 [2024-11-06 18:54:54,365 INFO L226 Difference]: Without dead ends: 2432 [2024-11-06 18:54:54,367 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 [2024-11-06 18:54:54,367 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 151 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:54,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 87 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:54:54,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2024-11-06 18:54:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2432. [2024-11-06 18:54:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 1.2924722336487042) internal successors, (3142), 2431 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3142 transitions. [2024-11-06 18:54:54,416 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3142 transitions. Word has length 169 [2024-11-06 18:54:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:54,416 INFO L471 AbstractCegarLoop]: Abstraction has 2432 states and 3142 transitions. [2024-11-06 18:54:54,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3142 transitions. [2024-11-06 18:54:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-06 18:54:54,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:54,422 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:54,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:54:54,422 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:54,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:54,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1951611608, now seen corresponding path program 1 times [2024-11-06 18:54:54,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096207019] [2024-11-06 18:54:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-06 18:54:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096207019] [2024-11-06 18:54:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096207019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:54,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:54,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:54:54,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056585832] [2024-11-06 18:54:54,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:54,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:54,581 INFO L87 Difference]: Start difference. First operand 2432 states and 3142 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:54,840 INFO L93 Difference]: Finished difference Result 4707 states and 6079 transitions. [2024-11-06 18:54:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:54,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 170 [2024-11-06 18:54:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:54,849 INFO L225 Difference]: With dead ends: 4707 [2024-11-06 18:54:54,849 INFO L226 Difference]: Without dead ends: 2277 [2024-11-06 18:54:54,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:54,853 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:54,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:54:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2024-11-06 18:54:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2277. [2024-11-06 18:54:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2276 states have (on average 1.2319859402460458) internal successors, (2804), 2276 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2804 transitions. [2024-11-06 18:54:54,906 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2804 transitions. Word has length 170 [2024-11-06 18:54:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:54,906 INFO L471 AbstractCegarLoop]: Abstraction has 2277 states and 2804 transitions. [2024-11-06 18:54:54,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2804 transitions. [2024-11-06 18:54:54,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-06 18:54:54,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:54,911 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:54,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 18:54:54,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:54,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1273710115, now seen corresponding path program 1 times [2024-11-06 18:54:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287158188] [2024-11-06 18:54:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-06 18:54:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287158188] [2024-11-06 18:54:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287158188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:54,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609439964] [2024-11-06 18:54:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:54,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:54,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:54,996 INFO L87 Difference]: Start difference. First operand 2277 states and 2804 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:55,402 INFO L93 Difference]: Finished difference Result 4411 states and 5430 transitions. [2024-11-06 18:54:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-06 18:54:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:55,409 INFO L225 Difference]: With dead ends: 4411 [2024-11-06 18:54:55,410 INFO L226 Difference]: Without dead ends: 2136 [2024-11-06 18:54:55,412 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 [2024-11-06 18:54:55,413 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 158 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:55,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 245 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:54:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2024-11-06 18:54:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2130. [2024-11-06 18:54:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2129 states have (on average 1.173790511977454) internal successors, (2499), 2129 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2499 transitions. [2024-11-06 18:54:55,451 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2499 transitions. Word has length 174 [2024-11-06 18:54:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:55,451 INFO L471 AbstractCegarLoop]: Abstraction has 2130 states and 2499 transitions. [2024-11-06 18:54:55,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2499 transitions. [2024-11-06 18:54:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-06 18:54:55,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:55,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:55,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 18:54:55,457 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:55,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash -183148420, now seen corresponding path program 1 times [2024-11-06 18:54:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302410787] [2024-11-06 18:54:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-06 18:54:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:55,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302410787] [2024-11-06 18:54:55,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302410787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:55,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:55,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070988876] [2024-11-06 18:54:55,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:55,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:55,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:55,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:55,597 INFO L87 Difference]: Start difference. First operand 2130 states and 2499 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:56,003 INFO L93 Difference]: Finished difference Result 3547 states and 4159 transitions. [2024-11-06 18:54:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 174 [2024-11-06 18:54:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:56,010 INFO L225 Difference]: With dead ends: 3547 [2024-11-06 18:54:56,010 INFO L226 Difference]: Without dead ends: 1846 [2024-11-06 18:54:56,013 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 [2024-11-06 18:54:56,013 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 118 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:56,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 240 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:54:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-06 18:54:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1846. [2024-11-06 18:54:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.1447154471544716) internal successors, (2112), 1845 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2112 transitions. [2024-11-06 18:54:56,048 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2112 transitions. Word has length 174 [2024-11-06 18:54:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:56,048 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2112 transitions. [2024-11-06 18:54:56,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2112 transitions. [2024-11-06 18:54:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-06 18:54:56,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:56,053 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:56,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 18:54:56,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:56,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1922058559, now seen corresponding path program 1 times [2024-11-06 18:54:56,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:56,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138664087] [2024-11-06 18:54:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:56,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 18:54:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:56,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138664087] [2024-11-06 18:54:56,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138664087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:56,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:56,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727830145] [2024-11-06 18:54:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:56,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:56,196 INFO L87 Difference]: Start difference. First operand 1846 states and 2112 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:56,601 INFO L93 Difference]: Finished difference Result 3965 states and 4534 transitions. [2024-11-06 18:54:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 176 [2024-11-06 18:54:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:56,611 INFO L225 Difference]: With dead ends: 3965 [2024-11-06 18:54:56,612 INFO L226 Difference]: Without dead ends: 2121 [2024-11-06 18:54:56,614 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 [2024-11-06 18:54:56,614 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 146 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:56,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 24 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:54:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2024-11-06 18:54:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2121. [2024-11-06 18:54:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2120 states have (on average 1.1320754716981132) internal successors, (2400), 2120 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2400 transitions. [2024-11-06 18:54:56,654 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2400 transitions. Word has length 176 [2024-11-06 18:54:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:56,654 INFO L471 AbstractCegarLoop]: Abstraction has 2121 states and 2400 transitions. [2024-11-06 18:54:56,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2400 transitions. [2024-11-06 18:54:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-06 18:54:56,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:56,660 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:56,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 18:54:56,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:56,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1456387651, now seen corresponding path program 1 times [2024-11-06 18:54:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:56,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732841597] [2024-11-06 18:54:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732841597] [2024-11-06 18:54:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732841597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959887668] [2024-11-06 18:54:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:57,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:54:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:54:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:54:57,081 INFO L87 Difference]: Start difference. First operand 2121 states and 2400 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:57,573 INFO L93 Difference]: Finished difference Result 4385 states and 4958 transitions. [2024-11-06 18:54:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:54:57,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2024-11-06 18:54:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:57,582 INFO L225 Difference]: With dead ends: 4385 [2024-11-06 18:54:57,582 INFO L226 Difference]: Without dead ends: 2266 [2024-11-06 18:54:57,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:54:57,586 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:57,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 86 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:54:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2024-11-06 18:54:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2261. [2024-11-06 18:54:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 1.1261061946902655) internal successors, (2545), 2260 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2545 transitions. [2024-11-06 18:54:57,632 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2545 transitions. Word has length 189 [2024-11-06 18:54:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:57,632 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 2545 transitions. [2024-11-06 18:54:57,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2545 transitions. [2024-11-06 18:54:57,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-06 18:54:57,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:57,638 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:57,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 18:54:57,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:57,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -45055208, now seen corresponding path program 1 times [2024-11-06 18:54:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:57,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812734425] [2024-11-06 18:54:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 18:54:57,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:57,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812734425] [2024-11-06 18:54:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812734425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:57,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:57,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:54:57,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961309960] [2024-11-06 18:54:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:57,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 18:54:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 18:54:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 18:54:57,961 INFO L87 Difference]: Start difference. First operand 2261 states and 2545 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:58,718 INFO L93 Difference]: Finished difference Result 5080 states and 5708 transitions. [2024-11-06 18:54:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 18:54:58,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2024-11-06 18:54:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:58,727 INFO L225 Difference]: With dead ends: 5080 [2024-11-06 18:54:58,727 INFO L226 Difference]: Without dead ends: 2401 [2024-11-06 18:54:58,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-06 18:54:58,731 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 283 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:58,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 76 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 18:54:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2024-11-06 18:54:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1699. [2024-11-06 18:54:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.0906949352179034) internal successors, (1852), 1698 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 1852 transitions. [2024-11-06 18:54:58,765 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 1852 transitions. Word has length 194 [2024-11-06 18:54:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:58,766 INFO L471 AbstractCegarLoop]: Abstraction has 1699 states and 1852 transitions. [2024-11-06 18:54:58,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 1852 transitions. [2024-11-06 18:54:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-06 18:54:58,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:58,771 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:58,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-06 18:54:58,771 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:58,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 160424803, now seen corresponding path program 1 times [2024-11-06 18:54:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:58,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091780137] [2024-11-06 18:54:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-06 18:54:58,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091780137] [2024-11-06 18:54:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091780137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:58,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:58,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:58,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213769897] [2024-11-06 18:54:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:58,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:58,899 INFO L87 Difference]: Start difference. First operand 1699 states and 1852 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:59,228 INFO L93 Difference]: Finished difference Result 3256 states and 3558 transitions. [2024-11-06 18:54:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 198 [2024-11-06 18:54:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:59,234 INFO L225 Difference]: With dead ends: 3256 [2024-11-06 18:54:59,234 INFO L226 Difference]: Without dead ends: 1699 [2024-11-06 18:54:59,236 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 [2024-11-06 18:54:59,237 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 110 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:59,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 202 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:54:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-11-06 18:54:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1559. [2024-11-06 18:54:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 1.0885750962772787) internal successors, (1696), 1558 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 1696 transitions. [2024-11-06 18:54:59,290 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 1696 transitions. Word has length 198 [2024-11-06 18:54:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:59,290 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 1696 transitions. [2024-11-06 18:54:59,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 1696 transitions. [2024-11-06 18:54:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-06 18:54:59,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:54:59,295 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:59,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-06 18:54:59,295 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:54:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:54:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash 401347841, now seen corresponding path program 1 times [2024-11-06 18:54:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:54:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570961698] [2024-11-06 18:54:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:54:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:54:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:54:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-06 18:54:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:54:59,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570961698] [2024-11-06 18:54:59,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570961698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:54:59,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:54:59,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:54:59,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997055022] [2024-11-06 18:54:59,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:54:59,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:54:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:54:59,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:54:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:54:59,438 INFO L87 Difference]: Start difference. First operand 1559 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:54:59,802 INFO L93 Difference]: Finished difference Result 3538 states and 3870 transitions. [2024-11-06 18:54:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:54:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-06 18:54:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:54:59,803 INFO L225 Difference]: With dead ends: 3538 [2024-11-06 18:54:59,803 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 18:54:59,806 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 [2024-11-06 18:54:59,806 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 125 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:54:59,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 175 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:54:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 18:54:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 18:54:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 18:54:59,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 219 [2024-11-06 18:54:59,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:54:59,807 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 18:54:59,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:54:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 18:54:59,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 18:54:59,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-06 18:54:59,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-06 18:54:59,813 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:54:59,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 18:55:00,173 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 18:55:00,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 06:55:00 BoogieIcfgContainer [2024-11-06 18:55:00,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 18:55:00,195 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 18:55:00,195 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 18:55:00,195 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 18:55:00,195 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:54:49" (3/4) ... [2024-11-06 18:55:00,199 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 18:55:00,216 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-06 18:55:00,219 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 18:55:00,220 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 18:55:00,220 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 18:55:00,351 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 18:55:00,352 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 18:55:00,352 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 18:55:00,353 INFO L158 Benchmark]: Toolchain (without parser) took 12269.39ms. Allocated memory was 117.4MB in the beginning and 302.0MB in the end (delta: 184.5MB). Free memory was 90.0MB in the beginning and 220.0MB in the end (delta: -129.9MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,354 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:55:00,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.05ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 64.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.09ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 59.1MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,355 INFO L158 Benchmark]: Boogie Preprocessor took 113.58ms. Allocated memory is still 117.4MB. Free memory was 59.1MB in the beginning and 54.5MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 18:55:00,355 INFO L158 Benchmark]: RCFGBuilder took 1191.05ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 54.5MB in the beginning and 109.2MB in the end (delta: -54.7MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,355 INFO L158 Benchmark]: TraceAbstraction took 10270.84ms. Allocated memory was 159.4MB in the beginning and 302.0MB in the end (delta: 142.6MB). Free memory was 109.2MB in the beginning and 231.0MB in the end (delta: -121.8MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,356 INFO L158 Benchmark]: Witness Printer took 157.31ms. Allocated memory is still 302.0MB. Free memory was 231.0MB in the beginning and 220.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 18:55:00,357 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 117.4MB. Free memory is still 81.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.05ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 64.3MB in the end (delta: 25.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.09ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 59.1MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 113.58ms. Allocated memory is still 117.4MB. Free memory was 59.1MB in the beginning and 54.5MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1191.05ms. Allocated memory was 117.4MB in the beginning and 159.4MB in the end (delta: 41.9MB). Free memory was 54.5MB in the beginning and 109.2MB in the end (delta: -54.7MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10270.84ms. Allocated memory was 159.4MB in the beginning and 302.0MB in the end (delta: 142.6MB). Free memory was 109.2MB in the beginning and 231.0MB in the end (delta: -121.8MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. * Witness Printer took 157.31ms. Allocated memory is still 302.0MB. Free memory was 231.0MB in the beginning and 220.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 545]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2030 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2030 mSDsluCounter, 1519 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200 mSDsCounter, 705 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5154 IncrementalHoareTripleChecker+Invalid, 5859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 705 mSolverCounterUnsat, 1319 mSDtfsCounter, 5154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2432occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1281 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2198 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2185 ConstructedInterpolants, 0 QuantifiedInterpolants, 4540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 948/948 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((a25 == 1) && (a17 <= 8)) && (a28 <= 10)) && (a19 == 1)) || ((a17 <= 7) && (a25 <= 0))) || ((((a17 == 8) && (a25 == 1)) && (a21 == 1)) && (a19 == 1))) || (((((9 <= a28) && (a25 == 1)) && (a17 <= 8)) && (a11 <= 0)) && (a28 <= 10))) || ((((((a17 == 8) && (a28 == 10)) && (a21 == 1)) && (a19 == 1)) && (a11 != 1)) && (a25 <= 0))) || ((((a17 == 8) && (9 <= a28)) && (a25 == 1)) && (a28 <= 10))) || (((a28 <= 9) && (a17 <= 8)) && (a25 <= 0))) || (((a25 == 1) && (a17 <= 7)) && (a28 == 9))) RESULT: Ultimate proved your program to be correct! [2024-11-06 18:55:00,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE