./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label15.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/Problem19_label15.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', '8295e17271be78ac0a7fd91eab40bb43faa05c2eb6916b9e37abf543b4d8bff6'] 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/Problem19_label15.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 8295e17271be78ac0a7fd91eab40bb43faa05c2eb6916b9e37abf543b4d8bff6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 20:16:54,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 20:16:54,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 20:16:54,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 20:16:54,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 20:16:54,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 20:16:54,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 20:16:54,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 20:16:54,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 20:16:54,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 20:16:54,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 20:16:54,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 20:16:54,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 20:16:54,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 20:16:54,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 20:16:54,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 20:16:54,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 20:16:54,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 20:16:54,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:16:54,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 20:16:54,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 20:16:54,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 20:16:54,422 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 -> 8295e17271be78ac0a7fd91eab40bb43faa05c2eb6916b9e37abf543b4d8bff6 [2024-11-06 20:16:54,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 20:16:54,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 20:16:54,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 20:16:54,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 20:16:54,635 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 20:16:54,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label15.c [2024-11-06 20:16:55,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 20:16:56,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 20:16:56,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label15.c [2024-11-06 20:16:56,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b11b3f47/8f0ea172ae23405b86bb9ca58ac8f355/FLAG174bfbac9 [2024-11-06 20:16:56,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b11b3f47/8f0ea172ae23405b86bb9ca58ac8f355 [2024-11-06 20:16:56,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 20:16:56,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 20:16:56,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 20:16:56,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 20:16:56,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 20:16:56,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:16:56" (1/1) ... [2024-11-06 20:16:56,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eeb0ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:56, skipping insertion in model container [2024-11-06 20:16:56,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:16:56" (1/1) ... [2024-11-06 20:16:56,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 20:16:56,643 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/Problem19_label15.c[7551,7564] [2024-11-06 20:16:57,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:16:57,314 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 20:16:57,330 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/Problem19_label15.c[7551,7564] [2024-11-06 20:16:57,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 20:16:57,752 INFO L204 MainTranslator]: Completed translation [2024-11-06 20:16:57,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57 WrapperNode [2024-11-06 20:16:57,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 20:16:57,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 20:16:57,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 20:16:57,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 20:16:57,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:57,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:58,391 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2024-11-06 20:16:58,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 20:16:58,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 20:16:58,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 20:16:58,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 20:16:58,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:58,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:58,533 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:58,921 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 20:16:58,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:58,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 20:16:59,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 20:16:59,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 20:16:59,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 20:16:59,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (1/1) ... [2024-11-06 20:16:59,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 20:16:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:16:59,307 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 20:16:59,310 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 20:16:59,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 20:16:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 20:16:59,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 20:16:59,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 20:16:59,391 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 20:16:59,393 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 20:17:05,114 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-06 20:17:05,114 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 20:17:05,143 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 20:17:05,143 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 20:17:05,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:17:05 BoogieIcfgContainer [2024-11-06 20:17:05,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 20:17:05,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 20:17:05,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 20:17:05,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 20:17:05,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:16:56" (1/3) ... [2024-11-06 20:17:05,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f236a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:17:05, skipping insertion in model container [2024-11-06 20:17:05,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:16:57" (2/3) ... [2024-11-06 20:17:05,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f236a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:17:05, skipping insertion in model container [2024-11-06 20:17:05,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:17:05" (3/3) ... [2024-11-06 20:17:05,150 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15.c [2024-11-06 20:17:05,159 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 20:17:05,160 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 20:17:05,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 20:17:05,231 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;@286c69c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 20:17:05,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 20:17:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 20:17:05,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-06 20:17:05,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:05,246 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] [2024-11-06 20:17:05,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:05,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2024-11-06 20:17:05,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:05,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616624659] [2024-11-06 20:17:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:05,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:05,654 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 20:17:05,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:05,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616624659] [2024-11-06 20:17:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616624659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:17:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449947583] [2024-11-06 20:17:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:05,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:17:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:05,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:17:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:17:05,679 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:17:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:14,806 INFO L93 Difference]: Finished difference Result 6284 states and 12039 transitions. [2024-11-06 20:17:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:17:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-06 20:17:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:14,831 INFO L225 Difference]: With dead ends: 6284 [2024-11-06 20:17:14,831 INFO L226 Difference]: Without dead ends: 4467 [2024-11-06 20:17:14,835 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 20:17:14,837 INFO L432 NwaCegarLoop]: 1812 mSDtfsCounter, 4225 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10828 mSolverCounterSat, 2355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4225 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2355 IncrementalHoareTripleChecker+Valid, 10828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:14,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4225 Valid, 2090 Invalid, 13183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2355 Valid, 10828 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-06 20:17:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2024-11-06 20:17:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4465. [2024-11-06 20:17:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4464 states have (on average 1.564516129032258) internal successors, (6984), 4464 states have internal predecessors, (6984), 0 states have call successors, (0), 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 20:17:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6984 transitions. [2024-11-06 20:17:14,951 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6984 transitions. Word has length 58 [2024-11-06 20:17:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:14,951 INFO L471 AbstractCegarLoop]: Abstraction has 4465 states and 6984 transitions. [2024-11-06 20:17:14,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 20:17:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6984 transitions. [2024-11-06 20:17:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-06 20:17:14,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:14,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:14,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 20:17:14,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:14,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2131037223, now seen corresponding path program 1 times [2024-11-06 20:17:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590531263] [2024-11-06 20:17:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:17:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:15,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590531263] [2024-11-06 20:17:15,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590531263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:15,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:15,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:17:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147262156] [2024-11-06 20:17:15,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:15,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:17:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:17:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:17:15,749 INFO L87 Difference]: Start difference. First operand 4465 states and 6984 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 20:17:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:23,017 INFO L93 Difference]: Finished difference Result 11706 states and 20175 transitions. [2024-11-06 20:17:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:17:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 265 [2024-11-06 20:17:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:23,040 INFO L225 Difference]: With dead ends: 11706 [2024-11-06 20:17:23,040 INFO L226 Difference]: Without dead ends: 8608 [2024-11-06 20:17:23,042 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 20:17:23,043 INFO L432 NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 1337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 10792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1337 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:23,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 10792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1337 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-06 20:17:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2024-11-06 20:17:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8594. [2024-11-06 20:17:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3480740137321074) internal successors, (11584), 8593 states have internal predecessors, (11584), 0 states have call successors, (0), 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 20:17:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11584 transitions. [2024-11-06 20:17:23,145 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11584 transitions. Word has length 265 [2024-11-06 20:17:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:23,145 INFO L471 AbstractCegarLoop]: Abstraction has 8594 states and 11584 transitions. [2024-11-06 20:17:23,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 20:17:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11584 transitions. [2024-11-06 20:17:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-06 20:17:23,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:23,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:23,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 20:17:23,151 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:23,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash 23757875, now seen corresponding path program 1 times [2024-11-06 20:17:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842446158] [2024-11-06 20:17:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:17:23,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:23,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842446158] [2024-11-06 20:17:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842446158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:23,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:17:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098129299] [2024-11-06 20:17:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:23,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:17:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:23,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:17:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:17:23,589 INFO L87 Difference]: Start difference. First operand 8594 states and 11584 transitions. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 20:17:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:27,809 INFO L93 Difference]: Finished difference Result 14487 states and 20449 transitions. [2024-11-06 20:17:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:17:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 293 [2024-11-06 20:17:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:27,830 INFO L225 Difference]: With dead ends: 14487 [2024-11-06 20:17:27,830 INFO L226 Difference]: Without dead ends: 8594 [2024-11-06 20:17:27,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:17:27,838 INFO L432 NwaCegarLoop]: 1775 mSDtfsCounter, 1151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:27,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1954 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-06 20:17:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2024-11-06 20:17:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594. [2024-11-06 20:17:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3465611544280227) internal successors, (11571), 8593 states have internal predecessors, (11571), 0 states have call successors, (0), 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 20:17:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11571 transitions. [2024-11-06 20:17:27,935 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11571 transitions. Word has length 293 [2024-11-06 20:17:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:27,936 INFO L471 AbstractCegarLoop]: Abstraction has 8594 states and 11571 transitions. [2024-11-06 20:17:27,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 20:17:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11571 transitions. [2024-11-06 20:17:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-06 20:17:27,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:27,946 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:27,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 20:17:27,946 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:27,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:27,947 INFO L85 PathProgramCache]: Analyzing trace with hash 333555352, now seen corresponding path program 1 times [2024-11-06 20:17:27,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:27,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066783293] [2024-11-06 20:17:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:27,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-06 20:17:28,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066783293] [2024-11-06 20:17:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066783293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:17:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433651605] [2024-11-06 20:17:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:17:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:17:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:17:28,314 INFO L87 Difference]: Start difference. First operand 8594 states and 11571 transitions. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:32,834 INFO L93 Difference]: Finished difference Result 20123 states and 28981 transitions. [2024-11-06 20:17:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:17:32,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 614 [2024-11-06 20:17:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:32,859 INFO L225 Difference]: With dead ends: 20123 [2024-11-06 20:17:32,859 INFO L226 Difference]: Without dead ends: 14261 [2024-11-06 20:17:32,866 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 20:17:32,867 INFO L432 NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:32,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-06 20:17:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2024-11-06 20:17:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14244. [2024-11-06 20:17:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 14243 states have (on average 1.2722038896299936) internal successors, (18120), 14243 states have internal predecessors, (18120), 0 states have call successors, (0), 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 20:17:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 18120 transitions. [2024-11-06 20:17:33,035 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 18120 transitions. Word has length 614 [2024-11-06 20:17:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:33,035 INFO L471 AbstractCegarLoop]: Abstraction has 14244 states and 18120 transitions. [2024-11-06 20:17:33,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 18120 transitions. [2024-11-06 20:17:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-11-06 20:17:33,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:33,046 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:33,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 20:17:33,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:33,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash 65664281, now seen corresponding path program 1 times [2024-11-06 20:17:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028939324] [2024-11-06 20:17:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-06 20:17:33,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:33,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028939324] [2024-11-06 20:17:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028939324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:33,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:33,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:17:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407211392] [2024-11-06 20:17:33,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:33,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:17:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:17:33,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:17:33,469 INFO L87 Difference]: Start difference. First operand 14244 states and 18120 transitions. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:37,632 INFO L93 Difference]: Finished difference Result 28511 states and 37629 transitions. [2024-11-06 20:17:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:17:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 619 [2024-11-06 20:17:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:37,659 INFO L225 Difference]: With dead ends: 28511 [2024-11-06 20:17:37,659 INFO L226 Difference]: Without dead ends: 16999 [2024-11-06 20:17:37,668 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 20:17:37,670 INFO L432 NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:37,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-06 20:17:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2024-11-06 20:17:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16985. [2024-11-06 20:17:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16985 states, 16984 states have (on average 1.2707253886010363) internal successors, (21582), 16984 states have internal predecessors, (21582), 0 states have call successors, (0), 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 20:17:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21582 transitions. [2024-11-06 20:17:37,807 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 21582 transitions. Word has length 619 [2024-11-06 20:17:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:37,807 INFO L471 AbstractCegarLoop]: Abstraction has 16985 states and 21582 transitions. [2024-11-06 20:17:37,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 21582 transitions. [2024-11-06 20:17:37,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-06 20:17:37,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:37,811 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:37,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 20:17:37,811 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:37,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash 28611204, now seen corresponding path program 1 times [2024-11-06 20:17:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843148137] [2024-11-06 20:17:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-06 20:17:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843148137] [2024-11-06 20:17:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843148137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:38,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 20:17:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588262312] [2024-11-06 20:17:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:38,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:17:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:17:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:17:38,406 INFO L87 Difference]: Start difference. First operand 16985 states and 21582 transitions. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:43,042 INFO L93 Difference]: Finished difference Result 43710 states and 57265 transitions. [2024-11-06 20:17:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:17:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 622 [2024-11-06 20:17:43,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:43,070 INFO L225 Difference]: With dead ends: 43710 [2024-11-06 20:17:43,071 INFO L226 Difference]: Without dead ends: 29457 [2024-11-06 20:17:43,082 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 20:17:43,082 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:43,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-06 20:17:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2024-11-06 20:17:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29454. [2024-11-06 20:17:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29454 states, 29453 states have (on average 1.255593657691916) internal successors, (36981), 29453 states have internal predecessors, (36981), 0 states have call successors, (0), 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 20:17:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29454 states to 29454 states and 36981 transitions. [2024-11-06 20:17:43,369 INFO L78 Accepts]: Start accepts. Automaton has 29454 states and 36981 transitions. Word has length 622 [2024-11-06 20:17:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:43,370 INFO L471 AbstractCegarLoop]: Abstraction has 29454 states and 36981 transitions. [2024-11-06 20:17:43,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 2 states have internal predecessors, (547), 0 states have call successors, (0), 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 20:17:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 29454 states and 36981 transitions. [2024-11-06 20:17:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2024-11-06 20:17:43,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:43,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:43,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-06 20:17:43,374 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:43,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 600710720, now seen corresponding path program 1 times [2024-11-06 20:17:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749924928] [2024-11-06 20:17:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 20:17:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749924928] [2024-11-06 20:17:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749924928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:44,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:44,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:17:44,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506240148] [2024-11-06 20:17:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:44,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 20:17:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 20:17:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:17:44,313 INFO L87 Difference]: Start difference. First operand 29454 states and 36981 transitions. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 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 20:17:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:50,117 INFO L93 Difference]: Finished difference Result 63037 states and 78523 transitions. [2024-11-06 20:17:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 20:17:50,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 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 649 [2024-11-06 20:17:50,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:50,151 INFO L225 Difference]: With dead ends: 63037 [2024-11-06 20:17:50,152 INFO L226 Difference]: Without dead ends: 36289 [2024-11-06 20:17:50,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:17:50,172 INFO L432 NwaCegarLoop]: 1654 mSDtfsCounter, 2272 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 10028 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 10216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 10028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:50,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 1870 Invalid, 10216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 10028 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-06 20:17:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36289 states. [2024-11-06 20:17:50,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36289 to 34921. [2024-11-06 20:17:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34921 states, 34920 states have (on average 1.2223654066437573) internal successors, (42685), 34920 states have internal predecessors, (42685), 0 states have call successors, (0), 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 20:17:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34921 states to 34921 states and 42685 transitions. [2024-11-06 20:17:50,489 INFO L78 Accepts]: Start accepts. Automaton has 34921 states and 42685 transitions. Word has length 649 [2024-11-06 20:17:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:50,490 INFO L471 AbstractCegarLoop]: Abstraction has 34921 states and 42685 transitions. [2024-11-06 20:17:50,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 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 20:17:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 34921 states and 42685 transitions. [2024-11-06 20:17:50,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2024-11-06 20:17:50,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:50,495 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:50,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-06 20:17:50,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:50,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 283919601, now seen corresponding path program 1 times [2024-11-06 20:17:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5206577] [2024-11-06 20:17:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 113 proven. 54 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-06 20:17:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5206577] [2024-11-06 20:17:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5206577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:17:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979208059] [2024-11-06 20:17:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:51,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:17:51,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:17:51,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:17:51,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 20:17:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:51,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 20:17:51,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:17:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-06 20:17:51,661 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:17:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979208059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:51,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:17:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-06 20:17:51,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531572239] [2024-11-06 20:17:51,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:51,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:17:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:51,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:17:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:17:51,663 INFO L87 Difference]: Start difference. First operand 34921 states and 42685 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 20:17:56,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:17:56,792 INFO L93 Difference]: Finished difference Result 87633 states and 109678 transitions. [2024-11-06 20:17:56,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:17:56,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 851 [2024-11-06 20:17:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:17:56,841 INFO L225 Difference]: With dead ends: 87633 [2024-11-06 20:17:56,841 INFO L226 Difference]: Without dead ends: 55444 [2024-11-06 20:17:56,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 850 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-06 20:17:56,855 INFO L432 NwaCegarLoop]: 1675 mSDtfsCounter, 1413 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4095 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 4095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-06 20:17:56,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1872 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 4095 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-06 20:17:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55444 states. [2024-11-06 20:17:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55444 to 54041. [2024-11-06 20:17:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54041 states, 54040 states have (on average 1.181661732050333) internal successors, (63857), 54040 states have internal predecessors, (63857), 0 states have call successors, (0), 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 20:17:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54041 states to 54041 states and 63857 transitions. [2024-11-06 20:17:57,239 INFO L78 Accepts]: Start accepts. Automaton has 54041 states and 63857 transitions. Word has length 851 [2024-11-06 20:17:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:17:57,240 INFO L471 AbstractCegarLoop]: Abstraction has 54041 states and 63857 transitions. [2024-11-06 20:17:57,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 20:17:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 54041 states and 63857 transitions. [2024-11-06 20:17:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2024-11-06 20:17:57,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:17:57,246 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:57,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 20:17:57,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:17:57,451 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:17:57,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:17:57,451 INFO L85 PathProgramCache]: Analyzing trace with hash -684579974, now seen corresponding path program 1 times [2024-11-06 20:17:57,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:17:57,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963164905] [2024-11-06 20:17:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:17:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:17:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:17:58,152 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-06 20:17:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:17:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963164905] [2024-11-06 20:17:58,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963164905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:17:58,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:17:58,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 20:17:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116117347] [2024-11-06 20:17:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:17:58,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 20:17:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:17:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 20:17:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:17:58,156 INFO L87 Difference]: Start difference. First operand 54041 states and 63857 transitions. Second operand has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 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 20:18:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:18:06,021 INFO L93 Difference]: Finished difference Result 172462 states and 208118 transitions. [2024-11-06 20:18:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 20:18:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 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 911 [2024-11-06 20:18:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:18:06,129 INFO L225 Difference]: With dead ends: 172462 [2024-11-06 20:18:06,129 INFO L226 Difference]: Without dead ends: 121153 [2024-11-06 20:18:06,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 20:18:06,164 INFO L432 NwaCegarLoop]: 953 mSDtfsCounter, 3214 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 8806 mSolverCounterSat, 2789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 11595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2789 IncrementalHoareTripleChecker+Valid, 8806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-06 20:18:06,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3214 Valid, 1288 Invalid, 11595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2789 Valid, 8806 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-06 20:18:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121153 states. [2024-11-06 20:18:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121153 to 103285. [2024-11-06 20:18:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103285 states, 103284 states have (on average 1.1896905619457032) internal successors, (122876), 103284 states have internal predecessors, (122876), 0 states have call successors, (0), 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 20:18:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103285 states to 103285 states and 122876 transitions. [2024-11-06 20:18:07,067 INFO L78 Accepts]: Start accepts. Automaton has 103285 states and 122876 transitions. Word has length 911 [2024-11-06 20:18:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:18:07,068 INFO L471 AbstractCegarLoop]: Abstraction has 103285 states and 122876 transitions. [2024-11-06 20:18:07,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 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 20:18:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 103285 states and 122876 transitions. [2024-11-06 20:18:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2024-11-06 20:18:07,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:18:07,075 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:07,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-06 20:18:07,075 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:18:07,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:18:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1115392042, now seen corresponding path program 1 times [2024-11-06 20:18:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:18:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834857143] [2024-11-06 20:18:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:18:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:18:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:18:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-06 20:18:07,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:18:07,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834857143] [2024-11-06 20:18:07,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834857143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:18:07,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 20:18:07,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 20:18:07,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200483352] [2024-11-06 20:18:07,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:18:07,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:18:07,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:18:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:18:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 20:18:07,590 INFO L87 Difference]: Start difference. First operand 103285 states and 122876 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 20:18:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:18:11,891 INFO L93 Difference]: Finished difference Result 207939 states and 247225 transitions. [2024-11-06 20:18:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:18:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 961 [2024-11-06 20:18:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:18:11,998 INFO L225 Difference]: With dead ends: 207939 [2024-11-06 20:18:11,998 INFO L226 Difference]: Without dead ends: 104656 [2024-11-06 20:18:12,163 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 20:18:12,164 INFO L432 NwaCegarLoop]: 2884 mSDtfsCounter, 1495 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 1477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 5152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-06 20:18:12,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 3070 Invalid, 5152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1477 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-06 20:18:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104656 states. [2024-11-06 20:18:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104656 to 103280. [2024-11-06 20:18:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103280 states, 103279 states have (on average 1.1358068920109605) internal successors, (117305), 103279 states have internal predecessors, (117305), 0 states have call successors, (0), 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 20:18:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103280 states to 103280 states and 117305 transitions. [2024-11-06 20:18:12,918 INFO L78 Accepts]: Start accepts. Automaton has 103280 states and 117305 transitions. Word has length 961 [2024-11-06 20:18:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:18:12,918 INFO L471 AbstractCegarLoop]: Abstraction has 103280 states and 117305 transitions. [2024-11-06 20:18:12,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 20:18:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 103280 states and 117305 transitions. [2024-11-06 20:18:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2024-11-06 20:18:12,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:18:12,929 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:12,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-06 20:18:12,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:18:12,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:18:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -287536037, now seen corresponding path program 1 times [2024-11-06 20:18:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:18:12,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303290579] [2024-11-06 20:18:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:18:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:18:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:18:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 547 proven. 434 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-06 20:18:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 20:18:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303290579] [2024-11-06 20:18:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303290579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 20:18:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552056768] [2024-11-06 20:18:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:18:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:18:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 20:18:14,378 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 20:18:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 20:18:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 20:18:14,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 20:18:14,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 20:18:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-06 20:18:14,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 20:18:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552056768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 20:18:14,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 20:18:14,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-06 20:18:14,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246073387] [2024-11-06 20:18:14,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 20:18:14,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 20:18:14,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 20:18:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 20:18:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:18:14,768 INFO L87 Difference]: Start difference. First operand 103280 states and 117305 transitions. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 20:18:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 20:18:19,029 INFO L93 Difference]: Finished difference Result 224312 states and 257758 transitions. [2024-11-06 20:18:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 20:18:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 987 [2024-11-06 20:18:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 20:18:19,316 INFO L225 Difference]: With dead ends: 224312 [2024-11-06 20:18:19,316 INFO L226 Difference]: Without dead ends: 134691 [2024-11-06 20:18:19,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 988 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-06 20:18:19,359 INFO L432 NwaCegarLoop]: 2703 mSDtfsCounter, 1607 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 3730 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 5315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 3730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-06 20:18:19,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2848 Invalid, 5315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1585 Valid, 3730 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-06 20:18:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134691 states. [2024-11-06 20:18:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134691 to 131944. [2024-11-06 20:18:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131944 states, 131943 states have (on average 1.1202261582653115) internal successors, (147806), 131943 states have internal predecessors, (147806), 0 states have call successors, (0), 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 20:18:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131944 states to 131944 states and 147806 transitions. [2024-11-06 20:18:20,778 INFO L78 Accepts]: Start accepts. Automaton has 131944 states and 147806 transitions. Word has length 987 [2024-11-06 20:18:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 20:18:20,779 INFO L471 AbstractCegarLoop]: Abstraction has 131944 states and 147806 transitions. [2024-11-06 20:18:20,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 20:18:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 131944 states and 147806 transitions. [2024-11-06 20:18:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2024-11-06 20:18:20,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 20:18:20,793 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:20,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 20:18:20,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 20:18:20,998 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 20:18:20,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 20:18:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 297235613, now seen corresponding path program 1 times [2024-11-06 20:18:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 20:18:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084627810] [2024-11-06 20:18:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 20:18:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 20:18:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat