./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 19:06:55,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 19:06:55,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 19:06:55,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 19:06:55,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 19:06:55,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 19:06:55,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 19:06:55,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 19:06:55,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 19:06:55,515 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 19:06:55,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 19:06:55,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 19:06:55,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 19:06:55,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 19:06:55,518 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 19:06:55,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 19:06:55,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 19:06:55,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 19:06:55,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 19:06:55,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 19:06:55,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 19:06:55,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 19:06:55,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 19:06:55,520 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 19:06:55,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 19:06:55,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 19:06:55,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 19:06:55,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 19:06:55,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:06:55,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 19:06:55,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 19:06:55,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 19:06:55,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 19:06:55,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 19:06:55,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 19:06:55,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 19:06:55,524 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 19:06:55,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 19:06:55,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 19:06:55,524 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 [2023-11-22 19:06:55,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 19:06:55,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 19:06:55,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 19:06:55,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 19:06:55,769 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 19:06:55,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-22 19:06:56,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 19:06:57,019 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 19:06:57,020 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-22 19:06:57,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552451791/8b44cebd393f4e4fbb94824053dd0e7e/FLAGb8dd9829b [2023-11-22 19:06:57,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/552451791/8b44cebd393f4e4fbb94824053dd0e7e [2023-11-22 19:06:57,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 19:06:57,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 19:06:57,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 19:06:57,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 19:06:57,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 19:06:57,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40937f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57, skipping insertion in model container [2023-11-22 19:06:57,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 19:06:57,257 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2023-11-22 19:06:57,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:06:57,455 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 19:06:57,464 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c[1268,1281] [2023-11-22 19:06:57,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 19:06:57,571 INFO L206 MainTranslator]: Completed translation [2023-11-22 19:06:57,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57 WrapperNode [2023-11-22 19:06:57,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 19:06:57,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 19:06:57,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 19:06:57,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 19:06:57,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,871 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2735 [2023-11-22 19:06:57,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 19:06:57,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 19:06:57,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 19:06:57,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 19:06:57,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:57,932 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,017 INFO L189 HeapSplitter]: Split 20 memory accesses to 5 slices as follows [2, 7, 2, 7, 2] [2023-11-22 19:06:58,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 19:06:58,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 19:06:58,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 19:06:58,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 19:06:58,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (1/1) ... [2023-11-22 19:06:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 19:06:58,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:06:58,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 19:06:58,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 19:06:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 19:06:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 19:06:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 19:06:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 19:06:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 19:06:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 19:06:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 19:06:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 19:06:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 19:06:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 19:06:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 19:06:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 19:06:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 19:06:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 19:06:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 19:06:58,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 19:06:58,697 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 19:06:58,699 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 19:07:00,194 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 19:07:00,243 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 19:07:00,243 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-22 19:07:00,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:07:00 BoogieIcfgContainer [2023-11-22 19:07:00,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 19:07:00,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 19:07:00,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 19:07:00,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 19:07:00,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:06:57" (1/3) ... [2023-11-22 19:07:00,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782f0a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:07:00, skipping insertion in model container [2023-11-22 19:07:00,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:06:57" (2/3) ... [2023-11-22 19:07:00,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782f0a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:07:00, skipping insertion in model container [2023-11-22 19:07:00,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:07:00" (3/3) ... [2023-11-22 19:07:00,250 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-22 19:07:00,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 19:07:00,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 19:07:00,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 19:07:00,337 INFO L357 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, mHoare=true, 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;@5c74b239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 19:07:00,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 19:07:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 558 states have (on average 1.6648745519713262) internal successors, (929), 559 states have internal predecessors, (929), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 19:07:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 19:07:00,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:00,371 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:00,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:00,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1167653168, now seen corresponding path program 1 times [2023-11-22 19:07:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:00,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074784731] [2023-11-22 19:07:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 19:07:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 19:07:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 19:07:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:07:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 19:07:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074784731] [2023-11-22 19:07:00,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074784731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:00,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:00,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 19:07:00,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877287390] [2023-11-22 19:07:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 19:07:00,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:00,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 19:07:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 19:07:00,850 INFO L87 Difference]: Start difference. First operand has 566 states, 558 states have (on average 1.6648745519713262) internal successors, (929), 559 states have internal predecessors, (929), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:00,929 INFO L93 Difference]: Finished difference Result 1125 states and 1873 transitions. [2023-11-22 19:07:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 19:07:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 240 [2023-11-22 19:07:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:00,947 INFO L225 Difference]: With dead ends: 1125 [2023-11-22 19:07:00,948 INFO L226 Difference]: Without dead ends: 564 [2023-11-22 19:07:00,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 19:07:00,958 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:00,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 920 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-22 19:07:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-22 19:07:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 557 states have (on average 1.6481149012567324) internal successors, (918), 557 states have internal predecessors, (918), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 19:07:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 928 transitions. [2023-11-22 19:07:01,021 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 928 transitions. Word has length 240 [2023-11-22 19:07:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:01,023 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 928 transitions. [2023-11-22 19:07:01,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 928 transitions. [2023-11-22 19:07:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 19:07:01,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:01,028 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:01,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 19:07:01,029 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:01,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1579276314, now seen corresponding path program 1 times [2023-11-22 19:07:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347158660] [2023-11-22 19:07:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 19:07:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 19:07:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 19:07:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:07:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 19:07:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347158660] [2023-11-22 19:07:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347158660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:01,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:01,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 19:07:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622165836] [2023-11-22 19:07:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:07:01,557 INFO L87 Difference]: Start difference. First operand 564 states and 928 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:01,600 INFO L93 Difference]: Finished difference Result 1127 states and 1855 transitions. [2023-11-22 19:07:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:01,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 240 [2023-11-22 19:07:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:01,603 INFO L225 Difference]: With dead ends: 1127 [2023-11-22 19:07:01,604 INFO L226 Difference]: Without dead ends: 568 [2023-11-22 19:07:01,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:07:01,607 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:01,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1836 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:01,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-22 19:07:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 565. [2023-11-22 19:07:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 558 states have (on average 1.646953405017921) internal successors, (919), 558 states have internal predecessors, (919), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 19:07:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 929 transitions. [2023-11-22 19:07:01,629 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 929 transitions. Word has length 240 [2023-11-22 19:07:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 929 transitions. [2023-11-22 19:07:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 929 transitions. [2023-11-22 19:07:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-22 19:07:01,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:01,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 19:07:01,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:01,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1165670496, now seen corresponding path program 1 times [2023-11-22 19:07:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942759961] [2023-11-22 19:07:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 19:07:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 19:07:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 19:07:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 19:07:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 19:07:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942759961] [2023-11-22 19:07:01,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942759961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:01,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158190153] [2023-11-22 19:07:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:01,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:01,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:01,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:02,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 19:07:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:02,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 19:07:02,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:02,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 19:07:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158190153] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:02,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:02,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-22 19:07:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54372106] [2023-11-22 19:07:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:02,475 INFO L87 Difference]: Start difference. First operand 565 states and 929 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:02,510 INFO L93 Difference]: Finished difference Result 1108 states and 1823 transitions. [2023-11-22 19:07:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:02,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 243 [2023-11-22 19:07:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:02,512 INFO L225 Difference]: With dead ends: 1108 [2023-11-22 19:07:02,513 INFO L226 Difference]: Without dead ends: 566 [2023-11-22 19:07:02,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:02,516 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:02,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1831 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-22 19:07:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2023-11-22 19:07:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 559 states have (on average 1.6457960644007155) internal successors, (920), 559 states have internal predecessors, (920), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 19:07:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 930 transitions. [2023-11-22 19:07:02,527 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 930 transitions. Word has length 243 [2023-11-22 19:07:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:02,527 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 930 transitions. [2023-11-22 19:07:02,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 930 transitions. [2023-11-22 19:07:02,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-22 19:07:02,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:02,530 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:02,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:02,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:02,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1794212491, now seen corresponding path program 1 times [2023-11-22 19:07:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113391269] [2023-11-22 19:07:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 19:07:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 19:07:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 19:07:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 19:07:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-22 19:07:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 19:07:03,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113391269] [2023-11-22 19:07:03,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113391269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:03,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549624670] [2023-11-22 19:07:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:03,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:03,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:03,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 19:07:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:03,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 19:07:03,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 19:07:03,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 19:07:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549624670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:04,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:04,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-22 19:07:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675129485] [2023-11-22 19:07:04,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 19:07:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 19:07:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:07:04,060 INFO L87 Difference]: Start difference. First operand 566 states and 930 transitions. Second operand has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:05,007 INFO L93 Difference]: Finished difference Result 1676 states and 2759 transitions. [2023-11-22 19:07:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:07:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 246 [2023-11-22 19:07:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:05,011 INFO L225 Difference]: With dead ends: 1676 [2023-11-22 19:07:05,011 INFO L226 Difference]: Without dead ends: 1116 [2023-11-22 19:07:05,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-22 19:07:05,013 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2469 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:05,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 4043 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 19:07:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-22 19:07:05,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 745. [2023-11-22 19:07:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 733 states have (on average 1.641200545702592) internal successors, (1203), 733 states have internal predecessors, (1203), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1223 transitions. [2023-11-22 19:07:05,034 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1223 transitions. Word has length 246 [2023-11-22 19:07:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:05,034 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1223 transitions. [2023-11-22 19:07:05,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.166666666666668) internal successors, (362), 12 states have internal predecessors, (362), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1223 transitions. [2023-11-22 19:07:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-11-22 19:07:05,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:05,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:05,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:05,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-22 19:07:05,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:05,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:05,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2082196273, now seen corresponding path program 1 times [2023-11-22 19:07:05,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:05,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292449837] [2023-11-22 19:07:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:05,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 19:07:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 19:07:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 19:07:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 19:07:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 19:07:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 19:07:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292449837] [2023-11-22 19:07:05,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292449837] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:05,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224053450] [2023-11-22 19:07:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:05,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:05,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:05,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:05,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 19:07:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:05,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 19:07:05,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:05,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-22 19:07:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224053450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:05,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-22 19:07:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032967630] [2023-11-22 19:07:05,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:05,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 19:07:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 19:07:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 19:07:05,956 INFO L87 Difference]: Start difference. First operand 745 states and 1223 transitions. Second operand has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:06,031 INFO L93 Difference]: Finished difference Result 1511 states and 2485 transitions. [2023-11-22 19:07:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:07:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 250 [2023-11-22 19:07:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:06,034 INFO L225 Difference]: With dead ends: 1511 [2023-11-22 19:07:06,035 INFO L226 Difference]: Without dead ends: 776 [2023-11-22 19:07:06,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:07:06,036 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 49 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:06,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 4612 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2023-11-22 19:07:06,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 773. [2023-11-22 19:07:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 761 states have (on average 1.636005256241787) internal successors, (1245), 761 states have internal predecessors, (1245), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1265 transitions. [2023-11-22 19:07:06,056 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1265 transitions. Word has length 250 [2023-11-22 19:07:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:06,056 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1265 transitions. [2023-11-22 19:07:06,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1265 transitions. [2023-11-22 19:07:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-22 19:07:06,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:06,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:06,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:06,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:06,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:06,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash -301352194, now seen corresponding path program 2 times [2023-11-22 19:07:06,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:06,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854690918] [2023-11-22 19:07:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:06,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 19:07:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 19:07:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 19:07:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 19:07:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 19:07:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-22 19:07:06,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854690918] [2023-11-22 19:07:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854690918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513343491] [2023-11-22 19:07:06,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:07:06,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:06,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:06,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 19:07:07,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:07:07,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:07:07,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 19:07:07,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-22 19:07:07,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513343491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:07,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 19:07:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164566232] [2023-11-22 19:07:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:07,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:07,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:07:07,414 INFO L87 Difference]: Start difference. First operand 773 states and 1265 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:07,553 INFO L93 Difference]: Finished difference Result 1271 states and 2083 transitions. [2023-11-22 19:07:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:07,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 262 [2023-11-22 19:07:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:07,556 INFO L225 Difference]: With dead ends: 1271 [2023-11-22 19:07:07,556 INFO L226 Difference]: Without dead ends: 773 [2023-11-22 19:07:07,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:07:07,558 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 790 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:07,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1670 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-22 19:07:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2023-11-22 19:07:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 761 states have (on average 1.630749014454665) internal successors, (1241), 761 states have internal predecessors, (1241), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1261 transitions. [2023-11-22 19:07:07,575 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1261 transitions. Word has length 262 [2023-11-22 19:07:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:07,577 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1261 transitions. [2023-11-22 19:07:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1261 transitions. [2023-11-22 19:07:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-22 19:07:07,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:07,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:07,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:07,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:07,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:07,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:07,794 INFO L85 PathProgramCache]: Analyzing trace with hash -156839146, now seen corresponding path program 1 times [2023-11-22 19:07:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219316274] [2023-11-22 19:07:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:07,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 19:07:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 19:07:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 19:07:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 19:07:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 19:07:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-22 19:07:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219316274] [2023-11-22 19:07:08,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219316274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613845544] [2023-11-22 19:07:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:08,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:08,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:08,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 19:07:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:08,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 19:07:08,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-22 19:07:08,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613845544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-22 19:07:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911317019] [2023-11-22 19:07:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:07:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:07:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:07:08,800 INFO L87 Difference]: Start difference. First operand 773 states and 1261 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:08,994 INFO L93 Difference]: Finished difference Result 1266 states and 2070 transitions. [2023-11-22 19:07:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 19:07:08,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 263 [2023-11-22 19:07:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:08,998 INFO L225 Difference]: With dead ends: 1266 [2023-11-22 19:07:08,998 INFO L226 Difference]: Without dead ends: 773 [2023-11-22 19:07:08,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:07:08,999 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 897 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:09,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2510 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-22 19:07:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2023-11-22 19:07:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 761 states have (on average 1.6294349540078843) internal successors, (1240), 761 states have internal predecessors, (1240), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1260 transitions. [2023-11-22 19:07:09,016 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1260 transitions. Word has length 263 [2023-11-22 19:07:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:09,017 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1260 transitions. [2023-11-22 19:07:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1260 transitions. [2023-11-22 19:07:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-22 19:07:09,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:09,020 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:09,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:09,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:09,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 769126334, now seen corresponding path program 1 times [2023-11-22 19:07:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384422414] [2023-11-22 19:07:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 19:07:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 19:07:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 19:07:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 19:07:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 19:07:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-22 19:07:09,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:09,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384422414] [2023-11-22 19:07:09,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384422414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:09,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237838268] [2023-11-22 19:07:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:09,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:09,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:09,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 19:07:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:09,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 19:07:09,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-22 19:07:09,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 19:07:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237838268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:10,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-22 19:07:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612054000] [2023-11-22 19:07:10,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 19:07:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 19:07:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-22 19:07:10,103 INFO L87 Difference]: Start difference. First operand 773 states and 1260 transitions. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:10,262 INFO L93 Difference]: Finished difference Result 1552 states and 2534 transitions. [2023-11-22 19:07:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 19:07:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 264 [2023-11-22 19:07:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:10,265 INFO L225 Difference]: With dead ends: 1552 [2023-11-22 19:07:10,266 INFO L226 Difference]: Without dead ends: 793 [2023-11-22 19:07:10,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:07:10,268 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 84 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 9238 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:10,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 9238 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-22 19:07:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-22 19:07:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 781 states have (on average 1.6261203585147248) internal successors, (1270), 781 states have internal predecessors, (1270), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1290 transitions. [2023-11-22 19:07:10,284 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1290 transitions. Word has length 264 [2023-11-22 19:07:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:10,284 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1290 transitions. [2023-11-22 19:07:10,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1290 transitions. [2023-11-22 19:07:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-11-22 19:07:10,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:10,289 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:10,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:10,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:10,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1177535992, now seen corresponding path program 2 times [2023-11-22 19:07:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091570701] [2023-11-22 19:07:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:10,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 19:07:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 19:07:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-22 19:07:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 19:07:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-22 19:07:10,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091570701] [2023-11-22 19:07:10,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091570701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:10,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669610483] [2023-11-22 19:07:10,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:07:10,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:10,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:10,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 19:07:11,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:07:11,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:07:11,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 19:07:11,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-22 19:07:11,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669610483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:11,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:11,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 19:07:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220775771] [2023-11-22 19:07:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:07:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:07:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-22 19:07:11,437 INFO L87 Difference]: Start difference. First operand 793 states and 1290 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:11,630 INFO L93 Difference]: Finished difference Result 1286 states and 2098 transitions. [2023-11-22 19:07:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 19:07:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 279 [2023-11-22 19:07:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:11,634 INFO L225 Difference]: With dead ends: 1286 [2023-11-22 19:07:11,634 INFO L226 Difference]: Without dead ends: 793 [2023-11-22 19:07:11,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-22 19:07:11,636 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 894 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:11,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2518 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 19:07:11,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-22 19:07:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-22 19:07:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 781 states have (on average 1.6248399487836107) internal successors, (1269), 781 states have internal predecessors, (1269), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1289 transitions. [2023-11-22 19:07:11,654 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1289 transitions. Word has length 279 [2023-11-22 19:07:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:11,654 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1289 transitions. [2023-11-22 19:07:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1289 transitions. [2023-11-22 19:07:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-11-22 19:07:11,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:11,657 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:11,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-22 19:07:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:11,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2016569654, now seen corresponding path program 1 times [2023-11-22 19:07:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50028866] [2023-11-22 19:07:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 19:07:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 19:07:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-22 19:07:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 19:07:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-22 19:07:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50028866] [2023-11-22 19:07:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50028866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117517728] [2023-11-22 19:07:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:12,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:12,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:12,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:12,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 19:07:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:12,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 19:07:12,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-22 19:07:12,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-22 19:07:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117517728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:12,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:12,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 19:07:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687674605] [2023-11-22 19:07:12,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:12,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 19:07:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:12,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 19:07:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:07:12,857 INFO L87 Difference]: Start difference. First operand 793 states and 1289 transitions. Second operand has 18 states, 18 states have (on average 14.944444444444445) internal successors, (269), 18 states have internal predecessors, (269), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:13,071 INFO L93 Difference]: Finished difference Result 1536 states and 2509 transitions. [2023-11-22 19:07:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 19:07:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.944444444444445) internal successors, (269), 18 states have internal predecessors, (269), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 279 [2023-11-22 19:07:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:13,075 INFO L225 Difference]: With dead ends: 1536 [2023-11-22 19:07:13,075 INFO L226 Difference]: Without dead ends: 825 [2023-11-22 19:07:13,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:13,077 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 91 mSDsluCounter, 11253 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 12199 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:13,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 12199 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-22 19:07:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2023-11-22 19:07:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 813 states have (on average 1.6199261992619927) internal successors, (1317), 813 states have internal predecessors, (1317), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1337 transitions. [2023-11-22 19:07:13,098 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1337 transitions. Word has length 279 [2023-11-22 19:07:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:13,099 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1337 transitions. [2023-11-22 19:07:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.944444444444445) internal successors, (269), 18 states have internal predecessors, (269), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 19:07:13,099 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1337 transitions. [2023-11-22 19:07:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-22 19:07:13,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:13,101 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:13,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:13,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 19:07:13,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:13,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1949813366, now seen corresponding path program 2 times [2023-11-22 19:07:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:13,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916018385] [2023-11-22 19:07:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 19:07:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 19:07:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 19:07:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:13,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:13,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916018385] [2023-11-22 19:07:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916018385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:13,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 19:07:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733852552] [2023-11-22 19:07:13,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:07:13,882 INFO L87 Difference]: Start difference. First operand 825 states and 1337 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:13,920 INFO L93 Difference]: Finished difference Result 829 states and 1341 transitions. [2023-11-22 19:07:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:13,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 291 [2023-11-22 19:07:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:13,923 INFO L225 Difference]: With dead ends: 829 [2023-11-22 19:07:13,923 INFO L226 Difference]: Without dead ends: 827 [2023-11-22 19:07:13,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:07:13,924 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:13,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2737 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-22 19:07:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2023-11-22 19:07:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 815 states have (on average 1.61840490797546) internal successors, (1319), 815 states have internal predecessors, (1319), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1339 transitions. [2023-11-22 19:07:13,942 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1339 transitions. Word has length 291 [2023-11-22 19:07:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1339 transitions. [2023-11-22 19:07:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1339 transitions. [2023-11-22 19:07:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-22 19:07:13,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:13,944 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:13,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 19:07:13,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:13,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 316398432, now seen corresponding path program 1 times [2023-11-22 19:07:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:13,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428494984] [2023-11-22 19:07:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 19:07:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 19:07:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 19:07:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:14,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428494984] [2023-11-22 19:07:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428494984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:14,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:14,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 19:07:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549976302] [2023-11-22 19:07:14,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:14,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:14,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:14,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:07:14,341 INFO L87 Difference]: Start difference. First operand 827 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:14,382 INFO L93 Difference]: Finished difference Result 1325 states and 2152 transitions. [2023-11-22 19:07:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:14,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 292 [2023-11-22 19:07:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:14,385 INFO L225 Difference]: With dead ends: 1325 [2023-11-22 19:07:14,385 INFO L226 Difference]: Without dead ends: 830 [2023-11-22 19:07:14,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:07:14,387 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:14,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2735 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-22 19:07:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 829. [2023-11-22 19:07:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 817 states have (on average 1.616891064871481) internal successors, (1321), 817 states have internal predecessors, (1321), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1341 transitions. [2023-11-22 19:07:14,408 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1341 transitions. Word has length 292 [2023-11-22 19:07:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:14,408 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1341 transitions. [2023-11-22 19:07:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1341 transitions. [2023-11-22 19:07:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-22 19:07:14,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:14,410 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 19:07:14,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:14,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1007985616, now seen corresponding path program 1 times [2023-11-22 19:07:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998622043] [2023-11-22 19:07:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 19:07:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 19:07:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 19:07:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:15,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998622043] [2023-11-22 19:07:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998622043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:15,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 19:07:15,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658438496] [2023-11-22 19:07:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:15,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 19:07:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 19:07:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:07:15,737 INFO L87 Difference]: Start difference. First operand 829 states and 1341 transitions. Second operand has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:16,083 INFO L93 Difference]: Finished difference Result 2545 states and 4140 transitions. [2023-11-22 19:07:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 19:07:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 293 [2023-11-22 19:07:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:16,089 INFO L225 Difference]: With dead ends: 2545 [2023-11-22 19:07:16,089 INFO L226 Difference]: Without dead ends: 1980 [2023-11-22 19:07:16,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-22 19:07:16,091 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 4643 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4646 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:16,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4646 Valid, 8674 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 19:07:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2023-11-22 19:07:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 845. [2023-11-22 19:07:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 833 states have (on average 1.6146458583433374) internal successors, (1345), 833 states have internal predecessors, (1345), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1365 transitions. [2023-11-22 19:07:16,119 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1365 transitions. Word has length 293 [2023-11-22 19:07:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:16,119 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1365 transitions. [2023-11-22 19:07:16,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.625) internal successors, (229), 8 states have internal predecessors, (229), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1365 transitions. [2023-11-22 19:07:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-22 19:07:16,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:16,122 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:16,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 19:07:16,122 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:16,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash 144252612, now seen corresponding path program 1 times [2023-11-22 19:07:16,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:16,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33387477] [2023-11-22 19:07:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33387477] [2023-11-22 19:07:16,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33387477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:16,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:16,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:07:16,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458004488] [2023-11-22 19:07:16,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:16,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:07:16,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:07:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:16,549 INFO L87 Difference]: Start difference. First operand 845 states and 1365 transitions. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:17,175 INFO L93 Difference]: Finished difference Result 2927 states and 4729 transitions. [2023-11-22 19:07:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:07:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 294 [2023-11-22 19:07:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:17,180 INFO L225 Difference]: With dead ends: 2927 [2023-11-22 19:07:17,181 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:17,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 19:07:17,183 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 2021 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 7051 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:17,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 7051 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 19:07:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 849. [2023-11-22 19:07:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 837 states have (on average 1.6117084826762247) internal successors, (1349), 837 states have internal predecessors, (1349), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1369 transitions. [2023-11-22 19:07:17,208 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1369 transitions. Word has length 294 [2023-11-22 19:07:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:17,208 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1369 transitions. [2023-11-22 19:07:17,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 19:07:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1369 transitions. [2023-11-22 19:07:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-22 19:07:17,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:17,210 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 19:07:17,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:17,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 489080774, now seen corresponding path program 1 times [2023-11-22 19:07:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926888753] [2023-11-22 19:07:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926888753] [2023-11-22 19:07:18,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926888753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:18,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:18,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 19:07:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534799220] [2023-11-22 19:07:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:07:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:07:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:07:18,107 INFO L87 Difference]: Start difference. First operand 849 states and 1369 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:18,227 INFO L93 Difference]: Finished difference Result 2077 states and 3374 transitions. [2023-11-22 19:07:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 19:07:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 294 [2023-11-22 19:07:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:18,232 INFO L225 Difference]: With dead ends: 2077 [2023-11-22 19:07:18,232 INFO L226 Difference]: Without dead ends: 1570 [2023-11-22 19:07:18,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:18,235 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1690 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:18,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 5413 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-11-22 19:07:18,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 959. [2023-11-22 19:07:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 947 states have (on average 1.6145723336853222) internal successors, (1529), 947 states have internal predecessors, (1529), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1549 transitions. [2023-11-22 19:07:18,264 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1549 transitions. Word has length 294 [2023-11-22 19:07:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:18,265 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1549 transitions. [2023-11-22 19:07:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1549 transitions. [2023-11-22 19:07:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-22 19:07:18,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:18,267 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:18,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 19:07:18,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:18,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash 934062578, now seen corresponding path program 1 times [2023-11-22 19:07:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210754238] [2023-11-22 19:07:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:18,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210754238] [2023-11-22 19:07:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210754238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:18,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:18,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:07:18,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489821495] [2023-11-22 19:07:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:18,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:07:18,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:18,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:07:18,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:18,635 INFO L87 Difference]: Start difference. First operand 959 states and 1549 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:18,732 INFO L93 Difference]: Finished difference Result 2166 states and 3511 transitions. [2023-11-22 19:07:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 19:07:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 295 [2023-11-22 19:07:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:18,738 INFO L225 Difference]: With dead ends: 2166 [2023-11-22 19:07:18,738 INFO L226 Difference]: Without dead ends: 1549 [2023-11-22 19:07:18,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:07:18,739 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 2450 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2450 SdHoareTripleChecker+Valid, 4140 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:18,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2450 Valid, 4140 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-11-22 19:07:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1014. [2023-11-22 19:07:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1002 states have (on average 1.6107784431137724) internal successors, (1614), 1002 states have internal predecessors, (1614), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 19:07:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1634 transitions. [2023-11-22 19:07:18,767 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1634 transitions. Word has length 295 [2023-11-22 19:07:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:18,768 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 1634 transitions. [2023-11-22 19:07:18,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1634 transitions. [2023-11-22 19:07:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-22 19:07:18,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:18,770 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:18,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 19:07:18,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash -418457136, now seen corresponding path program 1 times [2023-11-22 19:07:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:18,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38316683] [2023-11-22 19:07:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:18,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-22 19:07:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38316683] [2023-11-22 19:07:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38316683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:19,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:07:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549060427] [2023-11-22 19:07:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:19,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:07:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:07:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:19,816 INFO L87 Difference]: Start difference. First operand 1014 states and 1634 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:19,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:19,975 INFO L93 Difference]: Finished difference Result 2709 states and 4396 transitions. [2023-11-22 19:07:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 19:07:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 295 [2023-11-22 19:07:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:19,982 INFO L225 Difference]: With dead ends: 2709 [2023-11-22 19:07:19,982 INFO L226 Difference]: Without dead ends: 2057 [2023-11-22 19:07:19,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-22 19:07:19,983 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 4232 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:19,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4237 Valid, 4019 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2023-11-22 19:07:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1418. [2023-11-22 19:07:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1401 states have (on average 1.6138472519628837) internal successors, (2261), 1401 states have internal predecessors, (2261), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2291 transitions. [2023-11-22 19:07:20,022 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2291 transitions. Word has length 295 [2023-11-22 19:07:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:20,022 INFO L495 AbstractCegarLoop]: Abstraction has 1418 states and 2291 transitions. [2023-11-22 19:07:20,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:07:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2291 transitions. [2023-11-22 19:07:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-22 19:07:20,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:20,029 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:20,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 19:07:20,030 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:20,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash 525032142, now seen corresponding path program 1 times [2023-11-22 19:07:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15206416] [2023-11-22 19:07:20,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2023-11-22 19:07:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-11-22 19:07:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-11-22 19:07:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2023-11-22 19:07:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 19:07:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:20,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:20,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15206416] [2023-11-22 19:07:20,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15206416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:20,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:07:20,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 19:07:20,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017472935] [2023-11-22 19:07:20,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:20,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:20,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:07:20,674 INFO L87 Difference]: Start difference. First operand 1418 states and 2291 transitions. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:20,716 INFO L93 Difference]: Finished difference Result 2071 states and 3353 transitions. [2023-11-22 19:07:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 652 [2023-11-22 19:07:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:20,723 INFO L225 Difference]: With dead ends: 2071 [2023-11-22 19:07:20,723 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:20,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 19:07:20,724 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:20,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1829 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6134094151212552) internal successors, (2262), 1402 states have internal predecessors, (2262), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2292 transitions. [2023-11-22 19:07:20,762 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2292 transitions. Word has length 652 [2023-11-22 19:07:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:20,763 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2292 transitions. [2023-11-22 19:07:20,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2292 transitions. [2023-11-22 19:07:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-11-22 19:07:20,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:20,769 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:20,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 19:07:20,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:20,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1602881813, now seen corresponding path program 1 times [2023-11-22 19:07:20,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:20,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666544416] [2023-11-22 19:07:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-11-22 19:07:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2023-11-22 19:07:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-11-22 19:07:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 19:07:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 19:07:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666544416] [2023-11-22 19:07:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666544416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080385508] [2023-11-22 19:07:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:21,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:21,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 19:07:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:22,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 19:07:22,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-22 19:07:22,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:23,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080385508] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:23,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:23,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 19:07:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145309137] [2023-11-22 19:07:23,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:07:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:23,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:07:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 19:07:23,625 INFO L87 Difference]: Start difference. First operand 1419 states and 2292 transitions. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:23,806 INFO L93 Difference]: Finished difference Result 2072 states and 3353 transitions. [2023-11-22 19:07:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 653 [2023-11-22 19:07:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:23,811 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:23,811 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:23,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:23,813 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1492 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:23,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1678 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6126961483594864) internal successors, (2261), 1402 states have internal predecessors, (2261), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2291 transitions. [2023-11-22 19:07:23,858 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2291 transitions. Word has length 653 [2023-11-22 19:07:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:23,859 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2291 transitions. [2023-11-22 19:07:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2291 transitions. [2023-11-22 19:07:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-22 19:07:23,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:23,866 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:23,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:24,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:24,091 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:24,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1835575207, now seen corresponding path program 1 times [2023-11-22 19:07:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221763233] [2023-11-22 19:07:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-11-22 19:07:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-22 19:07:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-22 19:07:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2023-11-22 19:07:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-11-22 19:07:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221763233] [2023-11-22 19:07:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221763233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:24,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753461158] [2023-11-22 19:07:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:24,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:24,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:24,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:24,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 19:07:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:25,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 19:07:25,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-22 19:07:26,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753461158] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 19:07:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667313922] [2023-11-22 19:07:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:26,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:07:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:07:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 19:07:26,736 INFO L87 Difference]: Start difference. First operand 1419 states and 2291 transitions. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:26,911 INFO L93 Difference]: Finished difference Result 2072 states and 3351 transitions. [2023-11-22 19:07:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 654 [2023-11-22 19:07:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:26,924 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:26,925 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:26,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:26,929 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 736 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:26,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1686 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6119828815977175) internal successors, (2260), 1402 states have internal predecessors, (2260), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2290 transitions. [2023-11-22 19:07:26,967 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2290 transitions. Word has length 654 [2023-11-22 19:07:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:26,968 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2290 transitions. [2023-11-22 19:07:26,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2290 transitions. [2023-11-22 19:07:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-22 19:07:26,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:26,974 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:26,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:27,193 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:27,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash -922972375, now seen corresponding path program 1 times [2023-11-22 19:07:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810846097] [2023-11-22 19:07:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2023-11-22 19:07:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2023-11-22 19:07:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:07:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2023-11-22 19:07:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2023-11-22 19:07:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810846097] [2023-11-22 19:07:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810846097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968308069] [2023-11-22 19:07:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:27,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:27,866 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 19:07:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:28,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 3355 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 19:07:28,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-22 19:07:29,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:29,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968308069] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:29,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:29,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 19:07:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080926659] [2023-11-22 19:07:29,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:29,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:07:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:07:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 19:07:29,854 INFO L87 Difference]: Start difference. First operand 1419 states and 2290 transitions. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:30,009 INFO L93 Difference]: Finished difference Result 2072 states and 3349 transitions. [2023-11-22 19:07:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:30,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 655 [2023-11-22 19:07:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:30,029 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:30,029 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:30,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:30,031 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 730 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:30,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1686 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:30,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6112696148359487) internal successors, (2259), 1402 states have internal predecessors, (2259), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2289 transitions. [2023-11-22 19:07:30,066 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2289 transitions. Word has length 655 [2023-11-22 19:07:30,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:30,067 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2289 transitions. [2023-11-22 19:07:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2289 transitions. [2023-11-22 19:07:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-22 19:07:30,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:30,073 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:30,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:30,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-22 19:07:30,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:30,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:30,291 INFO L85 PathProgramCache]: Analyzing trace with hash 201308837, now seen corresponding path program 1 times [2023-11-22 19:07:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:30,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728457106] [2023-11-22 19:07:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:30,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2023-11-22 19:07:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-11-22 19:07:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-22 19:07:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-22 19:07:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 19:07:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:30,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728457106] [2023-11-22 19:07:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728457106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240803555] [2023-11-22 19:07:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:30,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:30,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:30,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:31,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 19:07:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:31,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 19:07:31,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 92 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-11-22 19:07:32,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240803555] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:32,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 19:07:32,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020319666] [2023-11-22 19:07:32,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:32,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:07:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:07:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 19:07:32,823 INFO L87 Difference]: Start difference. First operand 1419 states and 2289 transitions. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:32,989 INFO L93 Difference]: Finished difference Result 2072 states and 3347 transitions. [2023-11-22 19:07:32,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:32,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 656 [2023-11-22 19:07:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:32,993 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:32,994 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:32,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1317 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:32,997 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1432 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:32,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1678 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6105563480741798) internal successors, (2258), 1402 states have internal predecessors, (2258), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2288 transitions. [2023-11-22 19:07:33,035 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2288 transitions. Word has length 656 [2023-11-22 19:07:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:33,036 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2288 transitions. [2023-11-22 19:07:33,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2288 transitions. [2023-11-22 19:07:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-22 19:07:33,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:33,041 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:33,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-22 19:07:33,256 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:33,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1392344487, now seen corresponding path program 1 times [2023-11-22 19:07:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154778195] [2023-11-22 19:07:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2023-11-22 19:07:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-11-22 19:07:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:07:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2023-11-22 19:07:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-11-22 19:07:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:34,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:34,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154778195] [2023-11-22 19:07:34,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154778195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:34,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094504693] [2023-11-22 19:07:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:34,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:34,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:34,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:34,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 19:07:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:34,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 19:07:34,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-22 19:07:35,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094504693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:35,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 19:07:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635312506] [2023-11-22 19:07:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:35,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:35,264 INFO L87 Difference]: Start difference. First operand 1419 states and 2288 transitions. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:35,612 INFO L93 Difference]: Finished difference Result 2072 states and 3345 transitions. [2023-11-22 19:07:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:35,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 657 [2023-11-22 19:07:35,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:35,616 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:35,617 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:35,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:35,618 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 653 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:35,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1340 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 19:07:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:35,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6091298145506419) internal successors, (2256), 1402 states have internal predecessors, (2256), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2286 transitions. [2023-11-22 19:07:35,652 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2286 transitions. Word has length 657 [2023-11-22 19:07:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:35,652 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2286 transitions. [2023-11-22 19:07:35,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2286 transitions. [2023-11-22 19:07:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-22 19:07:35,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:35,658 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:35,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-22 19:07:35,876 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:35,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash 660060979, now seen corresponding path program 1 times [2023-11-22 19:07:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102827020] [2023-11-22 19:07:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2023-11-22 19:07:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2023-11-22 19:07:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 19:07:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2023-11-22 19:07:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-22 19:07:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102827020] [2023-11-22 19:07:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102827020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279308413] [2023-11-22 19:07:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:36,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:36,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:36,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 19:07:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:37,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 19:07:37,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-22 19:07:37,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279308413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:37,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:37,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 19:07:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418870050] [2023-11-22 19:07:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:37,745 INFO L87 Difference]: Start difference. First operand 1419 states and 2286 transitions. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:38,078 INFO L93 Difference]: Finished difference Result 2072 states and 3341 transitions. [2023-11-22 19:07:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 658 [2023-11-22 19:07:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:38,082 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:38,082 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:38,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:38,083 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 646 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:38,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1340 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 19:07:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6077032810271041) internal successors, (2254), 1402 states have internal predecessors, (2254), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2284 transitions. [2023-11-22 19:07:38,115 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2284 transitions. Word has length 658 [2023-11-22 19:07:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:38,116 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2284 transitions. [2023-11-22 19:07:38,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2284 transitions. [2023-11-22 19:07:38,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-22 19:07:38,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:38,123 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:38,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:38,341 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:38,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash -303985549, now seen corresponding path program 1 times [2023-11-22 19:07:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202779273] [2023-11-22 19:07:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2023-11-22 19:07:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-11-22 19:07:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-22 19:07:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2023-11-22 19:07:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2023-11-22 19:07:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202779273] [2023-11-22 19:07:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202779273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242840307] [2023-11-22 19:07:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:38,984 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:38,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 19:07:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:39,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 3367 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 19:07:39,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-22 19:07:40,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:07:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242840307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:07:40,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:07:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 19:07:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287411241] [2023-11-22 19:07:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:07:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:07:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:07:40,239 INFO L87 Difference]: Start difference. First operand 1419 states and 2284 transitions. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:40,540 INFO L93 Difference]: Finished difference Result 2072 states and 3337 transitions. [2023-11-22 19:07:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:07:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 659 [2023-11-22 19:07:40,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:40,543 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 19:07:40,543 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 19:07:40,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:40,544 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 633 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:40,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1340 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 19:07:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 19:07:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 19:07:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1402 states have (on average 1.6062767475035664) internal successors, (2252), 1402 states have internal predecessors, (2252), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2282 transitions. [2023-11-22 19:07:40,577 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2282 transitions. Word has length 659 [2023-11-22 19:07:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:40,578 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2282 transitions. [2023-11-22 19:07:40,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2282 transitions. [2023-11-22 19:07:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-22 19:07:40,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:40,584 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:40,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:40,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:40,800 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:40,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1739487636, now seen corresponding path program 1 times [2023-11-22 19:07:40,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:40,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781767444] [2023-11-22 19:07:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2023-11-22 19:07:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-22 19:07:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 19:07:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-22 19:07:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:07:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-22 19:07:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:41,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781767444] [2023-11-22 19:07:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781767444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:41,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492357793] [2023-11-22 19:07:41,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:41,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:41,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:41,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 19:07:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:42,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 3370 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 19:07:42,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 278 proven. 8 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-22 19:07:42,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492357793] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:42,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:42,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 19:07:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588849609] [2023-11-22 19:07:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:42,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:42,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:42,184 INFO L87 Difference]: Start difference. First operand 1419 states and 2282 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:42,222 INFO L93 Difference]: Finished difference Result 2073 states and 3335 transitions. [2023-11-22 19:07:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:42,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 660 [2023-11-22 19:07:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:42,225 INFO L225 Difference]: With dead ends: 2073 [2023-11-22 19:07:42,226 INFO L226 Difference]: Without dead ends: 1420 [2023-11-22 19:07:42,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1337 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:42,227 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:42,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1809 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:42,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-11-22 19:07:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2023-11-22 19:07:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1403 states have (on average 1.6058446186742694) internal successors, (2253), 1403 states have internal predecessors, (2253), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2283 transitions. [2023-11-22 19:07:42,258 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2283 transitions. Word has length 660 [2023-11-22 19:07:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:42,259 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 2283 transitions. [2023-11-22 19:07:42,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2283 transitions. [2023-11-22 19:07:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-22 19:07:42,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:42,264 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:42,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-22 19:07:42,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-22 19:07:42,480 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:42,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash 364886046, now seen corresponding path program 1 times [2023-11-22 19:07:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543701594] [2023-11-22 19:07:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:42,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-11-22 19:07:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-11-22 19:07:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-22 19:07:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-22 19:07:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-22 19:07:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-11-22 19:07:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543701594] [2023-11-22 19:07:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543701594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351738104] [2023-11-22 19:07:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:43,119 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:43,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 19:07:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:43,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 3377 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 19:07:43,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 278 proven. 8 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-11-22 19:07:43,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-11-22 19:07:43,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351738104] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:43,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:43,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 19:07:43,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583870401] [2023-11-22 19:07:43,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:43,882 INFO L87 Difference]: Start difference. First operand 1420 states and 2283 transitions. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:43,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:43,937 INFO L93 Difference]: Finished difference Result 2075 states and 3337 transitions. [2023-11-22 19:07:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 661 [2023-11-22 19:07:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:43,941 INFO L225 Difference]: With dead ends: 2075 [2023-11-22 19:07:43,941 INFO L226 Difference]: Without dead ends: 1421 [2023-11-22 19:07:43,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:43,943 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:43,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1809 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-11-22 19:07:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2023-11-22 19:07:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1404 states have (on average 1.6054131054131053) internal successors, (2254), 1404 states have internal predecessors, (2254), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2284 transitions. [2023-11-22 19:07:43,982 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2284 transitions. Word has length 661 [2023-11-22 19:07:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:43,983 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2284 transitions. [2023-11-22 19:07:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2284 transitions. [2023-11-22 19:07:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-22 19:07:43,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:43,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:44,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 19:07:44,207 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:44,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1628361053, now seen corresponding path program 1 times [2023-11-22 19:07:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382545141] [2023-11-22 19:07:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-11-22 19:07:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2023-11-22 19:07:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-11-22 19:07:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 19:07:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:07:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2023-11-22 19:07:44,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382545141] [2023-11-22 19:07:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382545141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:44,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620707092] [2023-11-22 19:07:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:44,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:44,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:44,891 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:44,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 19:07:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:45,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 19:07:45,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 278 proven. 8 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-22 19:07:45,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620707092] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:45,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 19:07:45,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217403091] [2023-11-22 19:07:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:45,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 19:07:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 19:07:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:45,636 INFO L87 Difference]: Start difference. First operand 1421 states and 2284 transitions. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:45,676 INFO L93 Difference]: Finished difference Result 2077 states and 3339 transitions. [2023-11-22 19:07:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 19:07:45,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 662 [2023-11-22 19:07:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:45,679 INFO L225 Difference]: With dead ends: 2077 [2023-11-22 19:07:45,679 INFO L226 Difference]: Without dead ends: 1422 [2023-11-22 19:07:45,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:07:45,681 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:45,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1810 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2023-11-22 19:07:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1422. [2023-11-22 19:07:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1405 states have (on average 1.604982206405694) internal successors, (2255), 1405 states have internal predecessors, (2255), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2285 transitions. [2023-11-22 19:07:45,712 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2285 transitions. Word has length 662 [2023-11-22 19:07:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:45,713 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2285 transitions. [2023-11-22 19:07:45,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2285 transitions. [2023-11-22 19:07:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-22 19:07:45,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:45,718 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:45,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 19:07:45,933 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:45,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 334120749, now seen corresponding path program 1 times [2023-11-22 19:07:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695149251] [2023-11-22 19:07:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2023-11-22 19:07:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2023-11-22 19:07:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2023-11-22 19:07:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 19:07:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2023-11-22 19:07:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:46,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695149251] [2023-11-22 19:07:46,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695149251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:46,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954425683] [2023-11-22 19:07:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:46,591 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:46,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 19:07:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:47,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 19:07:47,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 278 proven. 30 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-22 19:07:47,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:47,324 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 178 proven. 1 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:47,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954425683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:47,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:47,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 19:07:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403918829] [2023-11-22 19:07:47,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 19:07:47,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:47,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 19:07:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 19:07:47,327 INFO L87 Difference]: Start difference. First operand 1422 states and 2285 transitions. Second operand has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:47,406 INFO L93 Difference]: Finished difference Result 2081 states and 3345 transitions. [2023-11-22 19:07:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 19:07:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 663 [2023-11-22 19:07:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:47,408 INFO L225 Difference]: With dead ends: 2081 [2023-11-22 19:07:47,409 INFO L226 Difference]: Without dead ends: 1425 [2023-11-22 19:07:47,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1349 GetRequests, 1341 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:07:47,410 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 8 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:47,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4527 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:07:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2023-11-22 19:07:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1425. [2023-11-22 19:07:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1408 states have (on average 1.6036931818181819) internal successors, (2258), 1408 states have internal predecessors, (2258), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2288 transitions. [2023-11-22 19:07:47,442 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2288 transitions. Word has length 663 [2023-11-22 19:07:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:47,443 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2288 transitions. [2023-11-22 19:07:47,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.22222222222223) internal successors, (587), 9 states have internal predecessors, (587), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2288 transitions. [2023-11-22 19:07:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-11-22 19:07:47,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:47,449 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:47,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 19:07:47,664 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:47,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 326171280, now seen corresponding path program 2 times [2023-11-22 19:07:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743443103] [2023-11-22 19:07:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 19:07:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 19:07:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 19:07:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 19:07:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 19:07:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-22 19:07:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-22 19:07:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-22 19:07:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 19:07:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-22 19:07:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 178 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743443103] [2023-11-22 19:07:48,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743443103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938858731] [2023-11-22 19:07:48,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:07:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:48,416 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:48,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 19:07:48,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:07:48,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:07:48,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-22 19:07:48,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 272 proven. 3 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-22 19:07:49,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-22 19:07:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938858731] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 19:07:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 20 [2023-11-22 19:07:50,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776516940] [2023-11-22 19:07:50,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:07:50,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 19:07:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 19:07:50,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:50,238 INFO L87 Difference]: Start difference. First operand 1425 states and 2288 transitions. Second operand has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:52,316 INFO L93 Difference]: Finished difference Result 5464 states and 8758 transitions. [2023-11-22 19:07:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 19:07:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 666 [2023-11-22 19:07:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:52,323 INFO L225 Difference]: With dead ends: 5464 [2023-11-22 19:07:52,323 INFO L226 Difference]: Without dead ends: 3402 [2023-11-22 19:07:52,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1350 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 19:07:52,327 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 5315 mSDsluCounter, 5545 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5320 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5320 Valid, 6439 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-22 19:07:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2023-11-22 19:07:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 1433. [2023-11-22 19:07:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1416 states have (on average 1.6009887005649717) internal successors, (2267), 1416 states have internal predecessors, (2267), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2297 transitions. [2023-11-22 19:07:52,377 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2297 transitions. Word has length 666 [2023-11-22 19:07:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:52,377 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2297 transitions. [2023-11-22 19:07:52,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:07:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2297 transitions. [2023-11-22 19:07:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-22 19:07:52,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:52,382 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:52,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:52,598 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1525228428, now seen corresponding path program 1 times [2023-11-22 19:07:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471961500] [2023-11-22 19:07:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:52,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:07:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:07:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:07:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:07:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:07:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-11-22 19:07:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-11-22 19:07:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-11-22 19:07:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-22 19:07:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-11-22 19:07:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471961500] [2023-11-22 19:07:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471961500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205358190] [2023-11-22 19:07:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:53,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:53,391 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:53,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 19:07:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:54,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 19:07:54,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 279 proven. 84 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-22 19:07:54,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-11-22 19:07:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205358190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:54,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 19:07:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502990936] [2023-11-22 19:07:54,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 19:07:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 19:07:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:07:54,222 INFO L87 Difference]: Start difference. First operand 1433 states and 2297 transitions. Second operand has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:54,419 INFO L93 Difference]: Finished difference Result 2100 states and 3367 transitions. [2023-11-22 19:07:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 19:07:54,420 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 668 [2023-11-22 19:07:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:54,422 INFO L225 Difference]: With dead ends: 2100 [2023-11-22 19:07:54,422 INFO L226 Difference]: Without dead ends: 1437 [2023-11-22 19:07:54,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1363 GetRequests, 1345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:07:54,424 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 17 mSDsluCounter, 11919 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:54,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 12840 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:07:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-11-22 19:07:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2023-11-22 19:07:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1420 states have (on average 1.5992957746478873) internal successors, (2271), 1420 states have internal predecessors, (2271), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2301 transitions. [2023-11-22 19:07:54,466 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2301 transitions. Word has length 668 [2023-11-22 19:07:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:54,466 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2301 transitions. [2023-11-22 19:07:54,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.55555555555556) internal successors, (604), 18 states have internal predecessors, (604), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:07:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2301 transitions. [2023-11-22 19:07:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-11-22 19:07:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:54,472 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:54,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:54,688 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1590744780, now seen corresponding path program 2 times [2023-11-22 19:07:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36384244] [2023-11-22 19:07:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:07:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:07:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:07:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:07:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:07:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-22 19:07:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-11-22 19:07:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2023-11-22 19:07:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:07:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2023-11-22 19:07:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:07:55,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36384244] [2023-11-22 19:07:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36384244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672604278] [2023-11-22 19:07:55,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:07:55,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:55,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:55,363 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:55,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 19:07:55,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:07:55,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:07:55,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 19:07:55,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 270 proven. 4 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-22 19:07:56,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 170 proven. 4 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-11-22 19:07:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672604278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:57,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2023-11-22 19:07:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734940244] [2023-11-22 19:07:57,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 19:07:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 19:07:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:07:57,398 INFO L87 Difference]: Start difference. First operand 1437 states and 2301 transitions. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-22 19:07:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:07:58,131 INFO L93 Difference]: Finished difference Result 2652 states and 4248 transitions. [2023-11-22 19:07:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:07:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 672 [2023-11-22 19:07:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:07:58,134 INFO L225 Difference]: With dead ends: 2652 [2023-11-22 19:07:58,134 INFO L226 Difference]: Without dead ends: 1449 [2023-11-22 19:07:58,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1374 GetRequests, 1358 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:07:58,137 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1295 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:07:58,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 3504 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 19:07:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-22 19:07:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1439. [2023-11-22 19:07:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1422 states have (on average 1.5956399437412097) internal successors, (2269), 1422 states have internal predecessors, (2269), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:07:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2299 transitions. [2023-11-22 19:07:58,183 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2299 transitions. Word has length 672 [2023-11-22 19:07:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:07:58,183 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2299 transitions. [2023-11-22 19:07:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-22 19:07:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2299 transitions. [2023-11-22 19:07:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-11-22 19:07:58,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:07:58,188 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:07:58,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 19:07:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:58,400 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:07:58,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:07:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 892996696, now seen corresponding path program 1 times [2023-11-22 19:07:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:07:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202915251] [2023-11-22 19:07:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:07:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:07:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:07:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:07:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:07:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:07:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-11-22 19:07:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2023-11-22 19:07:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-22 19:07:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2023-11-22 19:07:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2023-11-22 19:07:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:07:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:07:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202915251] [2023-11-22 19:07:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202915251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:07:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81394686] [2023-11-22 19:07:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:07:59,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:07:59,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:07:59,108 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:07:59,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 19:07:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:07:59,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 3455 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 19:07:59,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:07:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 279 proven. 50 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-22 19:07:59,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:07:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:07:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81394686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:07:59,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:07:59,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 19:07:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503273651] [2023-11-22 19:07:59,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:07:59,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 19:07:59,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:07:59,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 19:07:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:07:59,963 INFO L87 Difference]: Start difference. First operand 1439 states and 2299 transitions. Second operand has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:08:00,092 INFO L93 Difference]: Finished difference Result 2110 states and 3371 transitions. [2023-11-22 19:08:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 19:08:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 673 [2023-11-22 19:08:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:08:00,095 INFO L225 Difference]: With dead ends: 2110 [2023-11-22 19:08:00,095 INFO L226 Difference]: Without dead ends: 1443 [2023-11-22 19:08:00,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-22 19:08:00,096 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 11 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9084 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:08:00,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9084 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:08:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-22 19:08:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2023-11-22 19:08:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1426 states have (on average 1.5939691444600281) internal successors, (2273), 1426 states have internal predecessors, (2273), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:08:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2303 transitions. [2023-11-22 19:08:00,141 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2303 transitions. Word has length 673 [2023-11-22 19:08:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:08:00,141 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2303 transitions. [2023-11-22 19:08:00,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2303 transitions. [2023-11-22 19:08:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-22 19:08:00,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:08:00,146 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:08:00,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-22 19:08:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:00,365 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:08:00,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:08:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 877917016, now seen corresponding path program 2 times [2023-11-22 19:08:00,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:08:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627111046] [2023-11-22 19:08:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:08:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:08:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:08:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:08:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:08:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:08:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2023-11-22 19:08:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-11-22 19:08:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 19:08:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 19:08:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 19:08:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 179 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:08:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:08:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627111046] [2023-11-22 19:08:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627111046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:08:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265601100] [2023-11-22 19:08:01,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:08:01,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:01,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:08:01,312 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:08:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 19:08:01,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:08:01,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:08:01,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 19:08:01,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:08:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2023-11-22 19:08:02,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:08:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265601100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:08:02,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:08:02,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2023-11-22 19:08:02,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051881533] [2023-11-22 19:08:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:08:02,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 19:08:02,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:08:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 19:08:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-22 19:08:02,445 INFO L87 Difference]: Start difference. First operand 1443 states and 2303 transitions. Second operand has 10 states, 10 states have (on average 48.6) internal successors, (486), 10 states have internal predecessors, (486), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:08:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:08:03,825 INFO L93 Difference]: Finished difference Result 3449 states and 5500 transitions. [2023-11-22 19:08:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 19:08:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 48.6) internal successors, (486), 10 states have internal predecessors, (486), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 677 [2023-11-22 19:08:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:08:03,831 INFO L225 Difference]: With dead ends: 3449 [2023-11-22 19:08:03,832 INFO L226 Difference]: Without dead ends: 2778 [2023-11-22 19:08:03,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2023-11-22 19:08:03,834 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 4196 mSDsluCounter, 7562 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4196 SdHoareTripleChecker+Valid, 8811 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:08:03,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 8811 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 19:08:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2023-11-22 19:08:03,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1444. [2023-11-22 19:08:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1427 states have (on average 1.5942536790469517) internal successors, (2275), 1427 states have internal predecessors, (2275), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:08:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2305 transitions. [2023-11-22 19:08:03,885 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2305 transitions. Word has length 677 [2023-11-22 19:08:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:08:03,886 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2305 transitions. [2023-11-22 19:08:03,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 48.6) internal successors, (486), 10 states have internal predecessors, (486), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 19:08:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2305 transitions. [2023-11-22 19:08:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-22 19:08:03,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:08:03,892 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:08:03,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-22 19:08:04,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:04,100 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:08:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:08:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 484890006, now seen corresponding path program 1 times [2023-11-22 19:08:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:08:04,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209603211] [2023-11-22 19:08:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:04,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:08:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:08:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:08:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:08:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:08:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:08:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2023-11-22 19:08:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-11-22 19:08:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 19:08:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 19:08:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 19:08:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 179 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:08:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:08:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209603211] [2023-11-22 19:08:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209603211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:08:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247530256] [2023-11-22 19:08:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:08:05,039 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:08:05,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 19:08:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:05,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 19:08:05,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:08:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 279 proven. 110 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-22 19:08:05,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:08:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 179 proven. 21 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-11-22 19:08:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247530256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:08:05,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:08:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 9] total 24 [2023-11-22 19:08:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355005641] [2023-11-22 19:08:05,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:08:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 19:08:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:08:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 19:08:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-22 19:08:05,982 INFO L87 Difference]: Start difference. First operand 1444 states and 2305 transitions. Second operand has 24 states, 24 states have (on average 25.583333333333332) internal successors, (614), 24 states have internal predecessors, (614), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:08:06,196 INFO L93 Difference]: Finished difference Result 2120 states and 3381 transitions. [2023-11-22 19:08:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 19:08:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 25.583333333333332) internal successors, (614), 24 states have internal predecessors, (614), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 677 [2023-11-22 19:08:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:08:06,199 INFO L225 Difference]: With dead ends: 2120 [2023-11-22 19:08:06,199 INFO L226 Difference]: Without dead ends: 1446 [2023-11-22 19:08:06,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-22 19:08:06,201 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 23 mSDsluCounter, 12929 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 13857 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:08:06,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 13857 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:08:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-22 19:08:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2023-11-22 19:08:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1429 states have (on average 1.5934219734079775) internal successors, (2277), 1429 states have internal predecessors, (2277), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-22 19:08:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2307 transitions. [2023-11-22 19:08:06,248 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2307 transitions. Word has length 677 [2023-11-22 19:08:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:08:06,249 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 2307 transitions. [2023-11-22 19:08:06,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.583333333333332) internal successors, (614), 24 states have internal predecessors, (614), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2307 transitions. [2023-11-22 19:08:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-11-22 19:08:06,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:08:06,254 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:08:06,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-22 19:08:06,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-22 19:08:06,468 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:08:06,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:08:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash 991656214, now seen corresponding path program 2 times [2023-11-22 19:08:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:08:06,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836586255] [2023-11-22 19:08:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:06,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:08:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:08:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:08:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:08:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:08:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:08:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2023-11-22 19:08:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-11-22 19:08:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2023-11-22 19:08:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2023-11-22 19:08:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2023-11-22 19:08:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:08:07,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:08:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836586255] [2023-11-22 19:08:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836586255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:08:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086892012] [2023-11-22 19:08:07,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:08:07,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:07,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:08:07,122 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:08:07,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 19:08:07,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:08:07,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:08:07,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-22 19:08:07,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:08:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 103 proven. 73 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-11-22 19:08:08,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:08:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 100 proven. 76 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-11-22 19:08:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086892012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:08:10,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:08:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 10] total 18 [2023-11-22 19:08:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101350141] [2023-11-22 19:08:10,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:08:10,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 19:08:10,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:08:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 19:08:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:08:10,940 INFO L87 Difference]: Start difference. First operand 1446 states and 2307 transitions. Second operand has 18 states, 18 states have (on average 89.44444444444444) internal successors, (1610), 18 states have internal predecessors, (1610), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-22 19:08:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:08:22,548 INFO L93 Difference]: Finished difference Result 19140 states and 30644 transitions. [2023-11-22 19:08:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-22 19:08:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 89.44444444444444) internal successors, (1610), 18 states have internal predecessors, (1610), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 679 [2023-11-22 19:08:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:08:22,573 INFO L225 Difference]: With dead ends: 19140 [2023-11-22 19:08:22,573 INFO L226 Difference]: Without dead ends: 18168 [2023-11-22 19:08:22,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1401, Invalid=5739, Unknown=0, NotChecked=0, Total=7140 [2023-11-22 19:08:22,581 INFO L413 NwaCegarLoop]: 3844 mSDtfsCounter, 11213 mSDsluCounter, 31445 mSDsCounter, 0 mSdLazyCounter, 13303 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11218 SdHoareTripleChecker+Valid, 35289 SdHoareTripleChecker+Invalid, 13396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 13303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:08:22,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11218 Valid, 35289 Invalid, 13396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 13303 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-22 19:08:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18168 states. [2023-11-22 19:08:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18168 to 2179. [2023-11-22 19:08:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 2132 states have (on average 1.5834896810506567) internal successors, (3376), 2132 states have internal predecessors, (3376), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:08:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3466 transitions. [2023-11-22 19:08:22,785 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3466 transitions. Word has length 679 [2023-11-22 19:08:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:08:22,786 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3466 transitions. [2023-11-22 19:08:22,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 89.44444444444444) internal successors, (1610), 18 states have internal predecessors, (1610), 6 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-22 19:08:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3466 transitions. [2023-11-22 19:08:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-22 19:08:22,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:08:22,793 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:08:22,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 19:08:23,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-22 19:08:23,006 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:08:23,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:08:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 745184673, now seen corresponding path program 1 times [2023-11-22 19:08:23,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:08:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165716389] [2023-11-22 19:08:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:23,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:08:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:08:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:08:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:08:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:08:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:08:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-11-22 19:08:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-11-22 19:08:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-22 19:08:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2023-11-22 19:08:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2023-11-22 19:08:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:08:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:08:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165716389] [2023-11-22 19:08:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165716389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:08:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506501092] [2023-11-22 19:08:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:23,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:23,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:08:23,736 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:08:23,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 19:08:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:24,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 19:08:24,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:08:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 279 proven. 50 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-11-22 19:08:24,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:08:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 179 proven. 3 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:08:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506501092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:08:24,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:08:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 19:08:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315014416] [2023-11-22 19:08:24,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:08:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 19:08:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:08:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 19:08:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:08:24,552 INFO L87 Difference]: Start difference. First operand 2179 states and 3466 transitions. Second operand has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:08:24,722 INFO L93 Difference]: Finished difference Result 3104 states and 4935 transitions. [2023-11-22 19:08:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 19:08:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 680 [2023-11-22 19:08:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:08:24,725 INFO L225 Difference]: With dead ends: 3104 [2023-11-22 19:08:24,725 INFO L226 Difference]: Without dead ends: 2183 [2023-11-22 19:08:24,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1385 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-22 19:08:24,727 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 11 mSDsluCounter, 7263 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8175 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:08:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8175 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:08:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2023-11-22 19:08:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2183. [2023-11-22 19:08:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 2136 states have (on average 1.5823970037453183) internal successors, (3380), 2136 states have internal predecessors, (3380), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:08:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3470 transitions. [2023-11-22 19:08:24,869 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3470 transitions. Word has length 680 [2023-11-22 19:08:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:08:24,870 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3470 transitions. [2023-11-22 19:08:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:08:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3470 transitions. [2023-11-22 19:08:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-22 19:08:24,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:08:24,880 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:08:24,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-22 19:08:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-22 19:08:25,087 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:08:25,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:08:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1924152801, now seen corresponding path program 2 times [2023-11-22 19:08:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:08:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757774636] [2023-11-22 19:08:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:08:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:08:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:08:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:08:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:08:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:08:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:08:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-11-22 19:08:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:08:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-22 19:08:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2023-11-22 19:08:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:08:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:08:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 179 proven. 21 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:08:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:08:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757774636] [2023-11-22 19:08:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757774636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:08:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687887981] [2023-11-22 19:08:25,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:08:25,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:08:25,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:08:25,993 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:08:26,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 19:08:26,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 19:08:26,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:08:26,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-22 19:08:26,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:08:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-11-22 19:08:28,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:08:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 4 proven. 106 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-11-22 19:08:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687887981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:08:37,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:08:37,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 34 [2023-11-22 19:08:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749028995] [2023-11-22 19:08:37,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:08:37,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-22 19:08:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:08:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-22 19:08:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 19:08:37,988 INFO L87 Difference]: Start difference. First operand 2183 states and 3470 transitions. Second operand has 34 states, 34 states have (on average 46.794117647058826) internal successors, (1591), 34 states have internal predecessors, (1591), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-22 19:09:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:23,474 INFO L93 Difference]: Finished difference Result 35023 states and 55321 transitions. [2023-11-22 19:09:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 501 states. [2023-11-22 19:09:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 46.794117647058826) internal successors, (1591), 34 states have internal predecessors, (1591), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 684 [2023-11-22 19:09:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:23,513 INFO L225 Difference]: With dead ends: 35023 [2023-11-22 19:09:23,513 INFO L226 Difference]: Without dead ends: 33834 [2023-11-22 19:09:23,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1991 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 530 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125544 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=22771, Invalid=259721, Unknown=0, NotChecked=0, Total=282492 [2023-11-22 19:09:23,545 INFO L413 NwaCegarLoop]: 2443 mSDtfsCounter, 77341 mSDsluCounter, 46581 mSDsCounter, 0 mSdLazyCounter, 22224 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77341 SdHoareTripleChecker+Valid, 49024 SdHoareTripleChecker+Invalid, 22625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 22224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:23,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77341 Valid, 49024 Invalid, 22625 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [401 Valid, 22224 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-11-22 19:09:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33834 states. [2023-11-22 19:09:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33834 to 2217. [2023-11-22 19:09:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2170 states have (on average 1.5737327188940091) internal successors, (3415), 2170 states have internal predecessors, (3415), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3505 transitions. [2023-11-22 19:09:23,807 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3505 transitions. Word has length 684 [2023-11-22 19:09:23,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:23,807 INFO L495 AbstractCegarLoop]: Abstraction has 2217 states and 3505 transitions. [2023-11-22 19:09:23,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 46.794117647058826) internal successors, (1591), 34 states have internal predecessors, (1591), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-22 19:09:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3505 transitions. [2023-11-22 19:09:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 19:09:23,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:23,814 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:09:23,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-22 19:09:24,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:24,028 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:24,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash -729127804, now seen corresponding path program 1 times [2023-11-22 19:09:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:24,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320536707] [2023-11-22 19:09:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2023-11-22 19:09:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 19:09:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-22 19:09:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2023-11-22 19:09:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-22 19:09:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 179 proven. 28 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:09:25,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320536707] [2023-11-22 19:09:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320536707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:09:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750271810] [2023-11-22 19:09:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:25,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:25,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:09:25,065 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:09:25,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-22 19:09:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:25,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 3541 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-22 19:09:25,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:09:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 279 proven. 120 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-22 19:09:25,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:09:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 179 proven. 28 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-22 19:09:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750271810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:09:26,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:09:26,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 10] total 27 [2023-11-22 19:09:26,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749464476] [2023-11-22 19:09:26,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:09:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-22 19:09:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-22 19:09:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2023-11-22 19:09:26,050 INFO L87 Difference]: Start difference. First operand 2217 states and 3505 transitions. Second operand has 27 states, 27 states have (on average 22.925925925925927) internal successors, (619), 27 states have internal predecessors, (619), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:26,393 INFO L93 Difference]: Finished difference Result 3160 states and 4992 transitions. [2023-11-22 19:09:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 19:09:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 22.925925925925927) internal successors, (619), 27 states have internal predecessors, (619), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 685 [2023-11-22 19:09:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:26,397 INFO L225 Difference]: With dead ends: 3160 [2023-11-22 19:09:26,397 INFO L226 Difference]: Without dead ends: 2221 [2023-11-22 19:09:26,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2023-11-22 19:09:26,402 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 26 mSDsluCounter, 15769 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 16701 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:26,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 16701 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 19:09:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2023-11-22 19:09:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2218. [2023-11-22 19:09:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2171 states have (on average 1.5734684477199448) internal successors, (3416), 2171 states have internal predecessors, (3416), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3506 transitions. [2023-11-22 19:09:26,540 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3506 transitions. Word has length 685 [2023-11-22 19:09:26,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:26,541 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3506 transitions. [2023-11-22 19:09:26,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 22.925925925925927) internal successors, (619), 27 states have internal predecessors, (619), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3506 transitions. [2023-11-22 19:09:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-22 19:09:26,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:26,547 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:26,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-22 19:09:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-22 19:09:26,748 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:26,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash -567101309, now seen corresponding path program 2 times [2023-11-22 19:09:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:26,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117610592] [2023-11-22 19:09:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2023-11-22 19:09:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-22 19:09:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 19:09:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2023-11-22 19:09:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 19:09:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 179 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-22 19:09:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117610592] [2023-11-22 19:09:27,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117610592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:09:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723340446] [2023-11-22 19:09:27,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:09:27,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:09:27,477 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:09:27,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-22 19:09:28,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 19:09:28,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:09:28,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 3548 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-22 19:09:28,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:09:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-22 19:09:28,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:09:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723340446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:28,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:09:28,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 19:09:28,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930514998] [2023-11-22 19:09:28,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:28,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:09:28,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:09:28,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:09:28,317 INFO L87 Difference]: Start difference. First operand 2218 states and 3506 transitions. Second operand has 6 states, 5 states have (on average 114.8) internal successors, (574), 6 states have internal predecessors, (574), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 19:09:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:28,510 INFO L93 Difference]: Finished difference Result 3938 states and 6233 transitions. [2023-11-22 19:09:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:09:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 114.8) internal successors, (574), 6 states have internal predecessors, (574), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 686 [2023-11-22 19:09:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:28,513 INFO L225 Difference]: With dead ends: 3938 [2023-11-22 19:09:28,514 INFO L226 Difference]: Without dead ends: 2218 [2023-11-22 19:09:28,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 19:09:28,517 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 2 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4479 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:09:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2023-11-22 19:09:28,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2218. [2023-11-22 19:09:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2171 states have (on average 1.570704744357439) internal successors, (3410), 2171 states have internal predecessors, (3410), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3500 transitions. [2023-11-22 19:09:28,656 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3500 transitions. Word has length 686 [2023-11-22 19:09:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:28,656 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3500 transitions. [2023-11-22 19:09:28,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 114.8) internal successors, (574), 6 states have internal predecessors, (574), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 19:09:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3500 transitions. [2023-11-22 19:09:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-11-22 19:09:28,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:28,663 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-22 19:09:28,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-22 19:09:28,876 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:28,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash -211648915, now seen corresponding path program 1 times [2023-11-22 19:09:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:28,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432335623] [2023-11-22 19:09:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2023-11-22 19:09:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 19:09:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 19:09:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 19:09:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2023-11-22 19:09:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-22 19:09:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432335623] [2023-11-22 19:09:29,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432335623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:09:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704008127] [2023-11-22 19:09:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:29,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:09:29,627 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:09:29,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-22 19:09:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:30,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 19:09:30,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:09:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 280 proven. 30 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-22 19:09:30,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:09:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-22 19:09:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704008127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:09:30,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:09:30,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 19:09:30,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883116322] [2023-11-22 19:09:30,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:09:30,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 19:09:30,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 19:09:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 19:09:30,463 INFO L87 Difference]: Start difference. First operand 2218 states and 3500 transitions. Second operand has 9 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:30,652 INFO L93 Difference]: Finished difference Result 3161 states and 4985 transitions. [2023-11-22 19:09:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 19:09:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 688 [2023-11-22 19:09:30,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:30,657 INFO L225 Difference]: With dead ends: 3161 [2023-11-22 19:09:30,657 INFO L226 Difference]: Without dead ends: 2221 [2023-11-22 19:09:30,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:09:30,659 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 8 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:30,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5424 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 19:09:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2023-11-22 19:09:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2221. [2023-11-22 19:09:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2174 states have (on average 1.5699172033118676) internal successors, (3413), 2174 states have internal predecessors, (3413), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 3503 transitions. [2023-11-22 19:09:30,815 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 3503 transitions. Word has length 688 [2023-11-22 19:09:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:30,816 INFO L495 AbstractCegarLoop]: Abstraction has 2221 states and 3503 transitions. [2023-11-22 19:09:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.66666666666667) internal successors, (591), 9 states have internal predecessors, (591), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 3503 transitions. [2023-11-22 19:09:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-11-22 19:09:30,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:30,824 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:30,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-22 19:09:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:31,036 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2059573353, now seen corresponding path program 2 times [2023-11-22 19:09:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871747801] [2023-11-22 19:09:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2023-11-22 19:09:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2023-11-22 19:09:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 19:09:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2023-11-22 19:09:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-11-22 19:09:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-22 19:09:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871747801] [2023-11-22 19:09:31,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871747801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:09:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251764637] [2023-11-22 19:09:31,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 19:09:31,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:09:31,887 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:09:31,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-22 19:09:32,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 19:09:32,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 19:09:32,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 19:09:32,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:09:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 280 proven. 84 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-22 19:09:32,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 19:09:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 180 proven. 10 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2023-11-22 19:09:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251764637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 19:09:32,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 19:09:32,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 19:09:32,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277679836] [2023-11-22 19:09:32,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 19:09:32,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 19:09:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 19:09:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 19:09:32,984 INFO L87 Difference]: Start difference. First operand 2221 states and 3503 transitions. Second operand has 18 states, 18 states have (on average 33.666666666666664) internal successors, (606), 18 states have internal predecessors, (606), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:33,267 INFO L93 Difference]: Finished difference Result 3168 states and 4993 transitions. [2023-11-22 19:09:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 19:09:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 33.666666666666664) internal successors, (606), 18 states have internal predecessors, (606), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 691 [2023-11-22 19:09:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:33,270 INFO L225 Difference]: With dead ends: 3168 [2023-11-22 19:09:33,270 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 19:09:33,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1391 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-22 19:09:33,272 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 17 mSDsluCounter, 9150 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10069 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:33,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10069 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:09:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 19:09:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 19:09:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2178 states have (on average 1.5688705234159779) internal successors, (3417), 2178 states have internal predecessors, (3417), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3507 transitions. [2023-11-22 19:09:33,421 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3507 transitions. Word has length 691 [2023-11-22 19:09:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:33,421 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3507 transitions. [2023-11-22 19:09:33,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 33.666666666666664) internal successors, (606), 18 states have internal predecessors, (606), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 19:09:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3507 transitions. [2023-11-22 19:09:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:33,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:33,428 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:33,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-22 19:09:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:09:33,649 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:33,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1681242473, now seen corresponding path program 3 times [2023-11-22 19:09:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969187218] [2023-11-22 19:09:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:35,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969187218] [2023-11-22 19:09:35,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969187218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:35,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 19:09:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895159347] [2023-11-22 19:09:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:09:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:35,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:09:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:09:35,430 INFO L87 Difference]: Start difference. First operand 2225 states and 3507 transitions. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:35,767 INFO L93 Difference]: Finished difference Result 3172 states and 4993 transitions. [2023-11-22 19:09:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:09:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:35,770 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 19:09:35,770 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 19:09:35,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:35,771 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 893 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:35,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1670 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:09:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 19:09:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 19:09:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2178 states have (on average 1.5684113865932048) internal successors, (3416), 2178 states have internal predecessors, (3416), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3506 transitions. [2023-11-22 19:09:35,947 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3506 transitions. Word has length 695 [2023-11-22 19:09:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:35,947 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3506 transitions. [2023-11-22 19:09:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3506 transitions. [2023-11-22 19:09:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:35,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:35,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:35,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-22 19:09:35,954 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:35,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1149373913, now seen corresponding path program 1 times [2023-11-22 19:09:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:35,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995324725] [2023-11-22 19:09:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:37,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:37,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995324725] [2023-11-22 19:09:37,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995324725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:37,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:37,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 19:09:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874803965] [2023-11-22 19:09:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:09:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:09:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:09:37,357 INFO L87 Difference]: Start difference. First operand 2225 states and 3506 transitions. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:37,696 INFO L93 Difference]: Finished difference Result 3172 states and 4991 transitions. [2023-11-22 19:09:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:09:37,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:37,699 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 19:09:37,699 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 19:09:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:37,700 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 892 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:37,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1670 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 19:09:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 19:09:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 19:09:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2178 states have (on average 1.5679522497704317) internal successors, (3415), 2178 states have internal predecessors, (3415), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3505 transitions. [2023-11-22 19:09:37,851 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3505 transitions. Word has length 695 [2023-11-22 19:09:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:37,852 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3505 transitions. [2023-11-22 19:09:37,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3505 transitions. [2023-11-22 19:09:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:37,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:37,857 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-22 19:09:37,858 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:37,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1318992855, now seen corresponding path program 1 times [2023-11-22 19:09:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222059355] [2023-11-22 19:09:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:39,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222059355] [2023-11-22 19:09:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222059355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 19:09:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616297152] [2023-11-22 19:09:39,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:39,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 19:09:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 19:09:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:09:39,144 INFO L87 Difference]: Start difference. First operand 2225 states and 3505 transitions. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:39,401 INFO L93 Difference]: Finished difference Result 3172 states and 4989 transitions. [2023-11-22 19:09:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:09:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:39,404 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 19:09:39,404 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 19:09:39,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:39,407 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 891 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:39,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1670 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:09:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 19:09:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 19:09:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2178 states have (on average 1.5674931129476584) internal successors, (3414), 2178 states have internal predecessors, (3414), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3504 transitions. [2023-11-22 19:09:39,638 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3504 transitions. Word has length 695 [2023-11-22 19:09:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:39,639 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3504 transitions. [2023-11-22 19:09:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3504 transitions. [2023-11-22 19:09:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:39,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:39,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-22 19:09:39,645 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:39,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash 201275623, now seen corresponding path program 1 times [2023-11-22 19:09:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8155630] [2023-11-22 19:09:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8155630] [2023-11-22 19:09:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8155630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:40,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:40,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 19:09:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257118158] [2023-11-22 19:09:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:40,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 19:09:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 19:09:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 19:09:40,803 INFO L87 Difference]: Start difference. First operand 2225 states and 3504 transitions. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:41,051 INFO L93 Difference]: Finished difference Result 3172 states and 4987 transitions. [2023-11-22 19:09:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 19:09:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:41,053 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 19:09:41,053 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 19:09:41,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 19:09:41,055 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 574 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:41,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1662 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:09:41,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 19:09:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 19:09:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2178 states have (on average 1.5670339761248853) internal successors, (3413), 2178 states have internal predecessors, (3413), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-22 19:09:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3503 transitions. [2023-11-22 19:09:41,201 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3503 transitions. Word has length 695 [2023-11-22 19:09:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3503 transitions. [2023-11-22 19:09:41,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3503 transitions. [2023-11-22 19:09:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:41,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:41,207 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-22 19:09:41,207 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:41,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:41,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1065045737, now seen corresponding path program 1 times [2023-11-22 19:09:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035021611] [2023-11-22 19:09:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2023-11-22 19:09:43,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:43,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035021611] [2023-11-22 19:09:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035021611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:43,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:43,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:09:43,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641355953] [2023-11-22 19:09:43,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:43,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:09:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:43,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:09:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:43,312 INFO L87 Difference]: Start difference. First operand 2225 states and 3503 transitions. Second operand has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:44,089 INFO L93 Difference]: Finished difference Result 4424 states and 6973 transitions. [2023-11-22 19:09:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:09:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:44,093 INFO L225 Difference]: With dead ends: 4424 [2023-11-22 19:09:44,093 INFO L226 Difference]: Without dead ends: 3227 [2023-11-22 19:09:44,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:09:44,094 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1618 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:44,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 2638 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 19:09:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2023-11-22 19:09:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2717. [2023-11-22 19:09:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2655 states have (on average 1.5638418079096046) internal successors, (4152), 2655 states have internal predecessors, (4152), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-22 19:09:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4272 transitions. [2023-11-22 19:09:44,318 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4272 transitions. Word has length 695 [2023-11-22 19:09:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:44,319 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 4272 transitions. [2023-11-22 19:09:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.66666666666667) internal successors, (490), 6 states have internal predecessors, (490), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4272 transitions. [2023-11-22 19:09:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 19:09:44,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:44,324 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-22 19:09:44,325 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:44,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1243339303, now seen corresponding path program 1 times [2023-11-22 19:09:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275507175] [2023-11-22 19:09:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 19:09:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 19:09:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 19:09:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 19:09:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 19:09:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:47,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:47,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275507175] [2023-11-22 19:09:47,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275507175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:47,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:47,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:09:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945502191] [2023-11-22 19:09:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:47,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:09:47,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:09:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:47,003 INFO L87 Difference]: Start difference. First operand 2717 states and 4272 transitions. Second operand has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:47,431 INFO L93 Difference]: Finished difference Result 5677 states and 8937 transitions. [2023-11-22 19:09:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:09:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 695 [2023-11-22 19:09:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:47,437 INFO L225 Difference]: With dead ends: 5677 [2023-11-22 19:09:47,437 INFO L226 Difference]: Without dead ends: 4730 [2023-11-22 19:09:47,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:09:47,439 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 2942 mSDsluCounter, 4785 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 6451 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:47,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 6451 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:09:47,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2023-11-22 19:09:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 3384. [2023-11-22 19:09:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 3322 states have (on average 1.5710415412402168) internal successors, (5219), 3322 states have internal predecessors, (5219), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-22 19:09:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 5339 transitions. [2023-11-22 19:09:47,636 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 5339 transitions. Word has length 695 [2023-11-22 19:09:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:47,636 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 5339 transitions. [2023-11-22 19:09:47,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 5339 transitions. [2023-11-22 19:09:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-22 19:09:47,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:47,643 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:47,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-22 19:09:47,643 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:47,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1955067939, now seen corresponding path program 1 times [2023-11-22 19:09:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38754338] [2023-11-22 19:09:47,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-22 19:09:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-11-22 19:09:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-22 19:09:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-22 19:09:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2023-11-22 19:09:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:49,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38754338] [2023-11-22 19:09:49,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38754338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:49,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:49,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:09:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639498239] [2023-11-22 19:09:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:09:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:09:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:49,709 INFO L87 Difference]: Start difference. First operand 3384 states and 5339 transitions. Second operand has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:50,678 INFO L93 Difference]: Finished difference Result 6072 states and 9566 transitions. [2023-11-22 19:09:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:09:50,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 696 [2023-11-22 19:09:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:50,683 INFO L225 Difference]: With dead ends: 6072 [2023-11-22 19:09:50,683 INFO L226 Difference]: Without dead ends: 4724 [2023-11-22 19:09:50,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:09:50,685 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 1364 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:50,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 3943 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 19:09:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2023-11-22 19:09:50,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 3536. [2023-11-22 19:09:50,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3474 states have (on average 1.568796776050662) internal successors, (5450), 3474 states have internal predecessors, (5450), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-22 19:09:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5570 transitions. [2023-11-22 19:09:50,906 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5570 transitions. Word has length 696 [2023-11-22 19:09:50,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:50,906 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5570 transitions. [2023-11-22 19:09:50,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5570 transitions. [2023-11-22 19:09:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-22 19:09:50,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:50,913 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:50,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-22 19:09:50,913 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:50,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2140354909, now seen corresponding path program 1 times [2023-11-22 19:09:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945291406] [2023-11-22 19:09:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:09:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 19:09:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:09:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 19:09:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 19:09:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945291406] [2023-11-22 19:09:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945291406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:53,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:53,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:09:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118834261] [2023-11-22 19:09:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:09:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:09:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:09:53,265 INFO L87 Difference]: Start difference. First operand 3536 states and 5570 transitions. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:54,183 INFO L93 Difference]: Finished difference Result 6224 states and 9796 transitions. [2023-11-22 19:09:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:09:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 697 [2023-11-22 19:09:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:54,189 INFO L225 Difference]: With dead ends: 6224 [2023-11-22 19:09:54,189 INFO L226 Difference]: Without dead ends: 4724 [2023-11-22 19:09:54,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:09:54,191 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1304 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:54,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 3928 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 19:09:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2023-11-22 19:09:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 3537. [2023-11-22 19:09:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3475 states have (on average 1.5686330935251798) internal successors, (5451), 3475 states have internal predecessors, (5451), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-22 19:09:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5571 transitions. [2023-11-22 19:09:54,412 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5571 transitions. Word has length 697 [2023-11-22 19:09:54,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:54,413 INFO L495 AbstractCegarLoop]: Abstraction has 3537 states and 5571 transitions. [2023-11-22 19:09:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5571 transitions. [2023-11-22 19:09:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-22 19:09:54,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:54,482 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:54,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-22 19:09:54,482 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:54,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1456394203, now seen corresponding path program 1 times [2023-11-22 19:09:54,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:54,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996674849] [2023-11-22 19:09:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:09:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:09:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:09:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:09:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:09:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:09:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:09:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 19:09:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:09:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 19:09:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 19:09:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:09:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:09:56,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:09:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996674849] [2023-11-22 19:09:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996674849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:09:56,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:09:56,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 19:09:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055198433] [2023-11-22 19:09:56,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:09:56,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 19:09:56,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:09:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 19:09:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:09:56,915 INFO L87 Difference]: Start difference. First operand 3537 states and 5571 transitions. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:09:58,318 INFO L93 Difference]: Finished difference Result 6807 states and 10684 transitions. [2023-11-22 19:09:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:09:58,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 697 [2023-11-22 19:09:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:09:58,323 INFO L225 Difference]: With dead ends: 6807 [2023-11-22 19:09:58,323 INFO L226 Difference]: Without dead ends: 5306 [2023-11-22 19:09:58,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:09:58,324 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2155 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 5199 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 19:09:58,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2155 Valid, 5199 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 19:09:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2023-11-22 19:09:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4094. [2023-11-22 19:09:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4017 states have (on average 1.56285785411999) internal successors, (6278), 4017 states have internal predecessors, (6278), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-22 19:09:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6428 transitions. [2023-11-22 19:09:58,667 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6428 transitions. Word has length 697 [2023-11-22 19:09:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:09:58,667 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 6428 transitions. [2023-11-22 19:09:58,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:09:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6428 transitions. [2023-11-22 19:09:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-22 19:09:58,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:09:58,675 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:09:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-22 19:09:58,675 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:09:58,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:09:58,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1722471341, now seen corresponding path program 1 times [2023-11-22 19:09:58,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:09:58,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889450585] [2023-11-22 19:09:58,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:09:58,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:10:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:10:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:10:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:10:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:10:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 19:10:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:10:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 19:10:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 19:10:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:10:01,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:01,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889450585] [2023-11-22 19:10:01,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889450585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:01,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:01,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 19:10:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432897707] [2023-11-22 19:10:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 19:10:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 19:10:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:10:01,317 INFO L87 Difference]: Start difference. First operand 4094 states and 6428 transitions. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:10:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:02,621 INFO L93 Difference]: Finished difference Result 7364 states and 11537 transitions. [2023-11-22 19:10:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:10:02,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 698 [2023-11-22 19:10:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:02,637 INFO L225 Difference]: With dead ends: 7364 [2023-11-22 19:10:02,637 INFO L226 Difference]: Without dead ends: 5306 [2023-11-22 19:10:02,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:10:02,640 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2094 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:02,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 5212 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 19:10:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2023-11-22 19:10:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4098. [2023-11-22 19:10:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4021 states have (on average 1.5622979358368565) internal successors, (6282), 4021 states have internal predecessors, (6282), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-22 19:10:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6432 transitions. [2023-11-22 19:10:02,983 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6432 transitions. Word has length 698 [2023-11-22 19:10:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:02,983 INFO L495 AbstractCegarLoop]: Abstraction has 4098 states and 6432 transitions. [2023-11-22 19:10:02,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:10:02,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6432 transitions. [2023-11-22 19:10:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-22 19:10:02,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:02,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-22 19:10:02,990 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 665740139, now seen corresponding path program 1 times [2023-11-22 19:10:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:02,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661916800] [2023-11-22 19:10:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 19:10:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 19:10:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 19:10:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 19:10:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 19:10:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 19:10:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 19:10:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 19:10:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 19:10:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-11-22 19:10:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661916800] [2023-11-22 19:10:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661916800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 19:10:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337083770] [2023-11-22 19:10:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 19:10:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 19:10:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:10:05,517 INFO L87 Difference]: Start difference. First operand 4098 states and 6432 transitions. Second operand has 7 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 19:10:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:06,317 INFO L93 Difference]: Finished difference Result 7802 states and 12256 transitions. [2023-11-22 19:10:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:10:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 698 [2023-11-22 19:10:06,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:06,321 INFO L225 Difference]: With dead ends: 7802 [2023-11-22 19:10:06,321 INFO L226 Difference]: Without dead ends: 4158 [2023-11-22 19:10:06,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:10:06,325 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1677 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:06,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 2126 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 19:10:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2023-11-22 19:10:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4128. [2023-11-22 19:10:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4051 states have (on average 1.5544310046902) internal successors, (6297), 4051 states have internal predecessors, (6297), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-22 19:10:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 6447 transitions. [2023-11-22 19:10:06,668 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 6447 transitions. Word has length 698 [2023-11-22 19:10:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:06,668 INFO L495 AbstractCegarLoop]: Abstraction has 4128 states and 6447 transitions. [2023-11-22 19:10:06,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 19:10:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 6447 transitions. [2023-11-22 19:10:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-22 19:10:06,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:06,675 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:06,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-22 19:10:06,675 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:06,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1577247095, now seen corresponding path program 1 times [2023-11-22 19:10:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655085557] [2023-11-22 19:10:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 19:10:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 19:10:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 19:10:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-22 19:10:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2023-11-22 19:10:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-22 19:10:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-11-22 19:10:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:10:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655085557] [2023-11-22 19:10:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655085557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:09,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 19:10:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805828021] [2023-11-22 19:10:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 19:10:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 19:10:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:10:09,298 INFO L87 Difference]: Start difference. First operand 4128 states and 6447 transitions. Second operand has 8 states, 8 states have (on average 72.875) internal successors, (583), 8 states have internal predecessors, (583), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 19:10:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:10,297 INFO L93 Difference]: Finished difference Result 9135 states and 14326 transitions. [2023-11-22 19:10:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:10:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.875) internal successors, (583), 8 states have internal predecessors, (583), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 700 [2023-11-22 19:10:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:10,302 INFO L225 Difference]: With dead ends: 9135 [2023-11-22 19:10:10,303 INFO L226 Difference]: Without dead ends: 5390 [2023-11-22 19:10:10,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-22 19:10:10,306 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 1170 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 5438 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:10,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 5438 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 19:10:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2023-11-22 19:10:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5099. [2023-11-22 19:10:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 4998 states have (on average 1.5582232893157264) internal successors, (7788), 4998 states have internal predecessors, (7788), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 19:10:10,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 7986 transitions. [2023-11-22 19:10:10,753 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 7986 transitions. Word has length 700 [2023-11-22 19:10:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:10,753 INFO L495 AbstractCegarLoop]: Abstraction has 5099 states and 7986 transitions. [2023-11-22 19:10:10,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.875) internal successors, (583), 8 states have internal predecessors, (583), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 19:10:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 7986 transitions. [2023-11-22 19:10:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-22 19:10:10,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:10,761 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:10,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-22 19:10:10,761 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:10,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:10,762 INFO L85 PathProgramCache]: Analyzing trace with hash 660050119, now seen corresponding path program 1 times [2023-11-22 19:10:10,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:10,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810961202] [2023-11-22 19:10:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:10,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 19:10:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 19:10:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 19:10:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-22 19:10:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2023-11-22 19:10:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-22 19:10:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-11-22 19:10:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2023-11-22 19:10:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810961202] [2023-11-22 19:10:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810961202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 19:10:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27228149] [2023-11-22 19:10:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 19:10:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 19:10:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 19:10:13,440 INFO L87 Difference]: Start difference. First operand 5099 states and 7986 transitions. Second operand has 7 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:14,415 INFO L93 Difference]: Finished difference Result 9090 states and 14230 transitions. [2023-11-22 19:10:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:10:14,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 700 [2023-11-22 19:10:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:14,420 INFO L225 Difference]: With dead ends: 9090 [2023-11-22 19:10:14,421 INFO L226 Difference]: Without dead ends: 5183 [2023-11-22 19:10:14,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:10:14,424 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 2416 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:14,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2416 Valid, 2388 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 19:10:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2023-11-22 19:10:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5141. [2023-11-22 19:10:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5040 states have (on average 1.549404761904762) internal successors, (7809), 5040 states have internal predecessors, (7809), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 19:10:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 8007 transitions. [2023-11-22 19:10:14,836 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 8007 transitions. Word has length 700 [2023-11-22 19:10:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:14,837 INFO L495 AbstractCegarLoop]: Abstraction has 5141 states and 8007 transitions. [2023-11-22 19:10:14,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 8007 transitions. [2023-11-22 19:10:14,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-11-22 19:10:14,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:14,845 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:14,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-22 19:10:14,848 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:14,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 84668329, now seen corresponding path program 1 times [2023-11-22 19:10:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865881820] [2023-11-22 19:10:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 19:10:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 19:10:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-22 19:10:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2023-11-22 19:10:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2023-11-22 19:10:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2023-11-22 19:10:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2023-11-22 19:10:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:10:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:17,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865881820] [2023-11-22 19:10:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865881820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:17,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:17,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 19:10:17,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304040471] [2023-11-22 19:10:17,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:17,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:10:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:10:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 19:10:17,905 INFO L87 Difference]: Start difference. First operand 5141 states and 8007 transitions. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:10:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:18,882 INFO L93 Difference]: Finished difference Result 13793 states and 21558 transitions. [2023-11-22 19:10:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 19:10:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 702 [2023-11-22 19:10:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:18,892 INFO L225 Difference]: With dead ends: 13793 [2023-11-22 19:10:18,892 INFO L226 Difference]: Without dead ends: 10733 [2023-11-22 19:10:18,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-22 19:10:18,896 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 2881 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2881 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:18,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2881 Valid, 6132 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 19:10:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10733 states. [2023-11-22 19:10:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10733 to 6397. [2023-11-22 19:10:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6397 states, 6296 states have (on average 1.5586086404066073) internal successors, (9813), 6296 states have internal predecessors, (9813), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 19:10:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 10011 transitions. [2023-11-22 19:10:19,437 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 10011 transitions. Word has length 702 [2023-11-22 19:10:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:19,437 INFO L495 AbstractCegarLoop]: Abstraction has 6397 states and 10011 transitions. [2023-11-22 19:10:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 19:10:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 10011 transitions. [2023-11-22 19:10:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-11-22 19:10:19,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:19,447 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-22 19:10:19,447 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:19,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash 514348209, now seen corresponding path program 1 times [2023-11-22 19:10:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126155933] [2023-11-22 19:10:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 19:10:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 19:10:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 19:10:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-22 19:10:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-22 19:10:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-11-22 19:10:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2023-11-22 19:10:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 165 proven. 4 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2023-11-22 19:10:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126155933] [2023-11-22 19:10:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126155933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:10:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634177284] [2023-11-22 19:10:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:10:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:10:22,286 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:10:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-22 19:10:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:23,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 3637 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-22 19:10:23,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:10:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2023-11-22 19:10:23,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:10:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634177284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:23,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:10:23,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-11-22 19:10:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373781702] [2023-11-22 19:10:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:23,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:10:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:10:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-22 19:10:23,477 INFO L87 Difference]: Start difference. First operand 6397 states and 10011 transitions. Second operand has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:24,409 INFO L93 Difference]: Finished difference Result 11599 states and 18163 transitions. [2023-11-22 19:10:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:10:24,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 703 [2023-11-22 19:10:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:24,415 INFO L225 Difference]: With dead ends: 11599 [2023-11-22 19:10:24,415 INFO L226 Difference]: Without dead ends: 6439 [2023-11-22 19:10:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-22 19:10:24,420 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 918 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:24,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 2388 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 19:10:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6439 states. [2023-11-22 19:10:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6439 to 6418. [2023-11-22 19:10:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6418 states, 6317 states have (on average 1.5567516226056672) internal successors, (9834), 6317 states have internal predecessors, (9834), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 19:10:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6418 states to 6418 states and 10032 transitions. [2023-11-22 19:10:24,920 INFO L78 Accepts]: Start accepts. Automaton has 6418 states and 10032 transitions. Word has length 703 [2023-11-22 19:10:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:24,920 INFO L495 AbstractCegarLoop]: Abstraction has 6418 states and 10032 transitions. [2023-11-22 19:10:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6418 states and 10032 transitions. [2023-11-22 19:10:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2023-11-22 19:10:24,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:24,931 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 19:10:24,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-22 19:10:25,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-22 19:10:25,144 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:25,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash 680866485, now seen corresponding path program 1 times [2023-11-22 19:10:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411431527] [2023-11-22 19:10:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 19:10:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 19:10:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 19:10:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-22 19:10:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-22 19:10:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-11-22 19:10:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2023-11-22 19:10:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 179 proven. 4 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:10:27,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411431527] [2023-11-22 19:10:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411431527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:10:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483209721] [2023-11-22 19:10:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:27,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:10:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:10:27,981 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:10:27,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-22 19:10:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:28,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 3639 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-22 19:10:28,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:10:29,839 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2023-11-22 19:10:29,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:10:29,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483209721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:29,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:10:29,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2023-11-22 19:10:29,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448723682] [2023-11-22 19:10:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 19:10:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 19:10:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-22 19:10:29,842 INFO L87 Difference]: Start difference. First operand 6418 states and 10032 transitions. Second operand has 9 states, 9 states have (on average 59.55555555555556) internal successors, (536), 9 states have internal predecessors, (536), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 19:10:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:31,115 INFO L93 Difference]: Finished difference Result 11821 states and 18460 transitions. [2023-11-22 19:10:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 19:10:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 59.55555555555556) internal successors, (536), 9 states have internal predecessors, (536), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 703 [2023-11-22 19:10:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:31,121 INFO L225 Difference]: With dead ends: 11821 [2023-11-22 19:10:31,121 INFO L226 Difference]: Without dead ends: 6523 [2023-11-22 19:10:31,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 717 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-11-22 19:10:31,125 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1697 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:31,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 3941 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 19:10:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2023-11-22 19:10:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6481. [2023-11-22 19:10:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6380 states have (on average 1.5479623824451412) internal successors, (9876), 6380 states have internal predecessors, (9876), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-22 19:10:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 10074 transitions. [2023-11-22 19:10:31,636 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 10074 transitions. Word has length 703 [2023-11-22 19:10:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:31,636 INFO L495 AbstractCegarLoop]: Abstraction has 6481 states and 10074 transitions. [2023-11-22 19:10:31,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.55555555555556) internal successors, (536), 9 states have internal predecessors, (536), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 19:10:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 10074 transitions. [2023-11-22 19:10:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-22 19:10:31,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:31,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:10:31,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-22 19:10:31,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-22 19:10:31,846 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:31,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1227169201, now seen corresponding path program 1 times [2023-11-22 19:10:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419581650] [2023-11-22 19:10:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-22 19:10:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-22 19:10:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-22 19:10:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-22 19:10:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 19:10:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-22 19:10:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-22 19:10:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-11-22 19:10:34,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419581650] [2023-11-22 19:10:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419581650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 19:10:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91948437] [2023-11-22 19:10:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 19:10:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 19:10:34,845 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 19:10:34,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-22 19:10:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:35,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 3647 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-22 19:10:35,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 19:10:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-11-22 19:10:36,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 19:10:36,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91948437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:36,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 19:10:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-22 19:10:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082755980] [2023-11-22 19:10:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 19:10:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 19:10:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-22 19:10:36,603 INFO L87 Difference]: Start difference. First operand 6481 states and 10074 transitions. Second operand has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 19:10:37,397 INFO L93 Difference]: Finished difference Result 6502 states and 10093 transitions. [2023-11-22 19:10:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 19:10:37,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 705 [2023-11-22 19:10:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 19:10:37,403 INFO L225 Difference]: With dead ends: 6502 [2023-11-22 19:10:37,403 INFO L226 Difference]: Without dead ends: 5504 [2023-11-22 19:10:37,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 722 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-22 19:10:37,404 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1268 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 19:10:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2084 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 19:10:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2023-11-22 19:10:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5489. [2023-11-22 19:10:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 5412 states have (on average 1.5476718403547671) internal successors, (8376), 5412 states have internal predecessors, (8376), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-22 19:10:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 8526 transitions. [2023-11-22 19:10:37,877 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 8526 transitions. Word has length 705 [2023-11-22 19:10:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 19:10:37,877 INFO L495 AbstractCegarLoop]: Abstraction has 5489 states and 8526 transitions. [2023-11-22 19:10:37,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 19:10:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 8526 transitions. [2023-11-22 19:10:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-11-22 19:10:37,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 19:10:37,884 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 19:10:37,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-22 19:10:38,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-22 19:10:38,085 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 19:10:38,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 19:10:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1475137395, now seen corresponding path program 1 times [2023-11-22 19:10:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 19:10:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987094555] [2023-11-22 19:10:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 19:10:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 19:10:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 19:10:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 19:10:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 19:10:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-22 19:10:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-22 19:10:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-22 19:10:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2023-11-22 19:10:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 19:10:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2023-11-22 19:10:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-11-22 19:10:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 19:10:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-11-22 19:10:43,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 19:10:43,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987094555] [2023-11-22 19:10:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987094555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 19:10:43,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 19:10:43,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 19:10:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960272902] [2023-11-22 19:10:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 19:10:43,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 19:10:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 19:10:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 19:10:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 19:10:43,435 INFO L87 Difference]: Start difference. First operand 5489 states and 8526 transitions. Second operand has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Killed by 15