./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 --preprocessor.use.memory.slicer true --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 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:39:46,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:39:46,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 22:39:46,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:39:46,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:39:46,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:39:46,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:39:46,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:39:46,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:39:46,673 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:39:46,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:39:46,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:39:46,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:39:46,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:39:46,676 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:39:46,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:39:46,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:39:46,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:39:46,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:39:46,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:39:46,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:39:46,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:39:46,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:39:46,680 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:39:46,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:39:46,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:39:46,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:39:46,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:39:46,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:39:46,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:39:46,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:39:46,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:39:46,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:39:46,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:39:46,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:39:46,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:39:46,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:39:46,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:39:46,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:39:46,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d054f79132e175b09d8c50472a4c24ca52f401c76e1d0704dd5609a369827e2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:39:47,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:39:47,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:39:47,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:39:47,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:39:47,036 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:39:47,038 INFO L431 ainManager$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 22:39:48,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:39:48,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:39:48,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-22 22:39:48,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f8424c2/56cb2e0e838f41548defae00ad1ac52a/FLAG28b6359bf [2023-11-22 22:39:48,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f8424c2/56cb2e0e838f41548defae00ad1ac52a [2023-11-22 22:39:48,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:39:48,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:39:48,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:39:48,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:39:48,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:39:48,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:39:48" (1/1) ... [2023-11-22 22:39:48,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53210d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:48, skipping insertion in model container [2023-11-22 22:39:48,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:39:48" (1/1) ... [2023-11-22 22:39:48,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:39:48,688 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 22:39:48,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:39:48,941 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:39:48,950 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 22:39:49,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:39:49,107 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:39:49,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49 WrapperNode [2023-11-22 22:39:49,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:39:49,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:39:49,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:39:49,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:39:49,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,514 INFO L138 Inliner]: procedures = 18, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2735 [2023-11-22 22:39:49,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:39:49,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:39:49,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:39:49,516 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:39:49,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,632 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,682 INFO L189 HeapSplitter]: Split 20 memory accesses to 5 slices as follows [2, 7, 7, 2, 2] [2023-11-22 22:39:49,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:39:49,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:39:49,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:39:49,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:39:49,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (1/1) ... [2023-11-22 22:39:49,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:39:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:39:49,917 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 22:39:49,932 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 22:39:50,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:39:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 22:39:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 22:39:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:39:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 22:39:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 22:39:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 22:39:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 22:39:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 22:39:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 22:39:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 22:39:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 22:39:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 22:39:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 22:39:50,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:39:50,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:39:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 22:39:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 22:39:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 22:39:50,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 22:39:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 22:39:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 22:39:50,384 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:39:50,387 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:39:52,137 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:39:52,191 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:39:52,192 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-22 22:39:52,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:39:52 BoogieIcfgContainer [2023-11-22 22:39:52,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:39:52,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:39:52,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:39:52,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:39:52,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:39:48" (1/3) ... [2023-11-22 22:39:52,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc814e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:39:52, skipping insertion in model container [2023-11-22 22:39:52,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:39:49" (2/3) ... [2023-11-22 22:39:52,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc814e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:39:52, skipping insertion in model container [2023-11-22 22:39:52,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:39:52" (3/3) ... [2023-11-22 22:39:52,200 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_arbitrated_fifos_n2d8w8.c [2023-11-22 22:39:52,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:39:52,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:39:52,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:39:52,287 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;@2205c112, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:39:52,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:39:52,295 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 22:39:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 22:39:52,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:52,315 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 22:39:52,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1167653168, now seen corresponding path program 1 times [2023-11-22 22:39:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189186444] [2023-11-22 22:39:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:39:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 22:39:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 22:39:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 22:39:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 22:39:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:52,856 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 22:39:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189186444] [2023-11-22 22:39:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189186444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:39:52,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:39:52,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:39:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85378007] [2023-11-22 22:39:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:39:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:39:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:39:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:39:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:39:52,899 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 22:39:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:39:52,976 INFO L93 Difference]: Finished difference Result 1125 states and 1873 transitions. [2023-11-22 22:39:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:39:52,987 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 22:39:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:39:53,001 INFO L225 Difference]: With dead ends: 1125 [2023-11-22 22:39:53,005 INFO L226 Difference]: Without dead ends: 564 [2023-11-22 22:39:53,012 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 22:39:53,017 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 22:39:53,018 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 22:39:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-22 22:39:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-22 22:39:53,081 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 22:39:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 928 transitions. [2023-11-22 22:39:53,085 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 928 transitions. Word has length 240 [2023-11-22 22:39:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:39:53,085 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 928 transitions. [2023-11-22 22:39:53,086 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 22:39:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 928 transitions. [2023-11-22 22:39:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 22:39:53,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:53,091 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 22:39:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:39:53,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1579276314, now seen corresponding path program 1 times [2023-11-22 22:39:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937763464] [2023-11-22 22:39:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 22:39:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 22:39:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-22 22:39:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 22:39:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 22:39:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:53,766 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 22:39:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:53,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937763464] [2023-11-22 22:39:53,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937763464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:39:53,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:39:53,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:39:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719894312] [2023-11-22 22:39:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:39:53,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:39:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:39:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:39:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:39:53,776 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 22:39:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:39:53,834 INFO L93 Difference]: Finished difference Result 1127 states and 1855 transitions. [2023-11-22 22:39:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:39:53,836 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 22:39:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:39:53,839 INFO L225 Difference]: With dead ends: 1127 [2023-11-22 22:39:53,839 INFO L226 Difference]: Without dead ends: 568 [2023-11-22 22:39:53,843 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 22:39:53,844 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 22:39:53,845 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 22:39:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-22 22:39:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 565. [2023-11-22 22:39:53,873 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 22:39:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 929 transitions. [2023-11-22 22:39:53,875 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 929 transitions. Word has length 240 [2023-11-22 22:39:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:39:53,878 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 929 transitions. [2023-11-22 22:39:53,878 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 22:39:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 929 transitions. [2023-11-22 22:39:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-22 22:39:53,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:53,886 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 22:39:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:39:53,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:53,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1165670496, now seen corresponding path program 1 times [2023-11-22 22:39:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798973145] [2023-11-22 22:39:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 22:39:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 22:39:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 22:39:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-22 22:39:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 22:39:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,383 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 22:39:54,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:54,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798973145] [2023-11-22 22:39:54,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798973145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:39:54,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25040125] [2023-11-22 22:39:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:54,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:39:54,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:39:54,392 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 22:39:54,415 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 22:39:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:54,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:39:54,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:39:54,882 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 22:39:54,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:39:54,932 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 22:39:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25040125] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:39:54,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:39:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-22 22:39:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494567759] [2023-11-22 22:39:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:39:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:39:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:39:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:39:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:39:54,940 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 22:39:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:39:54,982 INFO L93 Difference]: Finished difference Result 1108 states and 1823 transitions. [2023-11-22 22:39:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:39:54,982 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 22:39:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:39:54,985 INFO L225 Difference]: With dead ends: 1108 [2023-11-22 22:39:54,985 INFO L226 Difference]: Without dead ends: 566 [2023-11-22 22:39:54,986 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 22:39:54,989 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 22:39:54,990 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 22:39:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-11-22 22:39:55,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2023-11-22 22:39:55,002 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 22:39:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 930 transitions. [2023-11-22 22:39:55,005 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 930 transitions. Word has length 243 [2023-11-22 22:39:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:39:55,005 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 930 transitions. [2023-11-22 22:39:55,006 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 22:39:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 930 transitions. [2023-11-22 22:39:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-22 22:39:55,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:55,010 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 22:39:55,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 22:39:55,227 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 22:39:55,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:55,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:55,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1794212491, now seen corresponding path program 1 times [2023-11-22 22:39:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:55,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713271044] [2023-11-22 22:39:55,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 22:39:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 22:39:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-22 22:39:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-22 22:39:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-22 22:39:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:55,652 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 22:39:55,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713271044] [2023-11-22 22:39:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713271044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:39:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933718196] [2023-11-22 22:39:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:55,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:39:55,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:39:55,656 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 22:39:55,676 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 22:39:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:56,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 22:39:56,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:39:56,122 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 22:39:56,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:39:56,674 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 22:39:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933718196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:39:56,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:39:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-22 22:39:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780688402] [2023-11-22 22:39:56,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:39:56,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:39:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:39:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:39:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:39:56,680 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 22:39:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:39:57,822 INFO L93 Difference]: Finished difference Result 1676 states and 2759 transitions. [2023-11-22 22:39:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:39:57,823 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 22:39:57,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:39:57,827 INFO L225 Difference]: With dead ends: 1676 [2023-11-22 22:39:57,827 INFO L226 Difference]: Without dead ends: 1116 [2023-11-22 22:39:57,828 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 22:39:57,829 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 2469 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:39:57,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 4043 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 22:39:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-22 22:39:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 745. [2023-11-22 22:39:57,854 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 22:39:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1223 transitions. [2023-11-22 22:39:57,858 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1223 transitions. Word has length 246 [2023-11-22 22:39:57,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:39:57,859 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1223 transitions. [2023-11-22 22:39:57,859 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 22:39:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1223 transitions. [2023-11-22 22:39:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-11-22 22:39:57,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:57,863 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 22:39:57,882 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 22:39:58,080 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 22:39:58,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:58,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2082196273, now seen corresponding path program 1 times [2023-11-22 22:39:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547031810] [2023-11-22 22:39:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 22:39:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 22:39:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-22 22:39:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-22 22:39:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 22:39:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,478 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 22:39:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:58,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547031810] [2023-11-22 22:39:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547031810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:39:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893211320] [2023-11-22 22:39:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:58,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:39:58,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:39:58,480 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 22:39:58,482 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 22:39:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:58,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:39:58,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:39:58,862 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 22:39:58,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:39:58,895 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 22:39:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893211320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:39:58,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:39:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-22 22:39:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139288373] [2023-11-22 22:39:58,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:39:58,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:39:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:39:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:39:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:39:58,899 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 22:39:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:39:58,992 INFO L93 Difference]: Finished difference Result 1511 states and 2485 transitions. [2023-11-22 22:39:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:39:58,993 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 22:39:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:39:58,996 INFO L225 Difference]: With dead ends: 1511 [2023-11-22 22:39:58,996 INFO L226 Difference]: Without dead ends: 776 [2023-11-22 22:39:58,997 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 22:39:58,998 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 22:39:58,999 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 22:39:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2023-11-22 22:39:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 773. [2023-11-22 22:39:59,019 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 22:39:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1265 transitions. [2023-11-22 22:39:59,022 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1265 transitions. Word has length 250 [2023-11-22 22:39:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:39:59,023 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1265 transitions. [2023-11-22 22:39:59,023 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 22:39:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1265 transitions. [2023-11-22 22:39:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-22 22:39:59,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:39:59,026 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 22:39:59,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 22:39:59,240 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 22:39:59,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:39:59,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:39:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash -301352194, now seen corresponding path program 2 times [2023-11-22 22:39:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:39:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151552053] [2023-11-22 22:39:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:39:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:39:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 22:39:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:39:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 22:39:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 22:39:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 22:39:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:39:59,666 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 22:39:59,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:39:59,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151552053] [2023-11-22 22:39:59,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151552053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:39:59,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666340490] [2023-11-22 22:39:59,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:39:59,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:39:59,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:39:59,668 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 22:39:59,686 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 22:40:00,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:00,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:00,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:40:00,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:00,399 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 22:40:00,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666340490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:00,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:00,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-11-22 22:40:00,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626194714] [2023-11-22 22:40:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:00,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:00,402 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 22:40:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:00,557 INFO L93 Difference]: Finished difference Result 1271 states and 2083 transitions. [2023-11-22 22:40:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:00,558 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 22:40:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:00,562 INFO L225 Difference]: With dead ends: 1271 [2023-11-22 22:40:00,562 INFO L226 Difference]: Without dead ends: 773 [2023-11-22 22:40:00,563 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 22:40:00,564 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 22:40:00,564 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 22:40:00,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-22 22:40:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2023-11-22 22:40:00,582 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 22:40:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1261 transitions. [2023-11-22 22:40:00,588 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1261 transitions. Word has length 262 [2023-11-22 22:40:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:00,591 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1261 transitions. [2023-11-22 22:40:00,592 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 22:40:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1261 transitions. [2023-11-22 22:40:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-22 22:40:00,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:00,595 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 22:40:00,616 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 22:40:00,809 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 22:40:00,810 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:00,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash -156839146, now seen corresponding path program 1 times [2023-11-22 22:40:00,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:00,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566852450] [2023-11-22 22:40:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:00,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 22:40:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:40:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 22:40:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 22:40:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 22:40:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,256 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 22:40:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:01,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566852450] [2023-11-22 22:40:01,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566852450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:01,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507802409] [2023-11-22 22:40:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:01,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:01,259 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 22:40:01,278 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 22:40:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:01,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:40:01,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:01,903 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 22:40:01,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507802409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:01,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-22 22:40:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117261952] [2023-11-22 22:40:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:40:01,906 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 22:40:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:02,112 INFO L93 Difference]: Finished difference Result 1266 states and 2070 transitions. [2023-11-22 22:40:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:40:02,113 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 22:40:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:02,117 INFO L225 Difference]: With dead ends: 1266 [2023-11-22 22:40:02,117 INFO L226 Difference]: Without dead ends: 773 [2023-11-22 22:40:02,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:02,119 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:02,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 2510 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:40:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-11-22 22:40:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2023-11-22 22:40:02,141 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 22:40:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1260 transitions. [2023-11-22 22:40:02,144 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1260 transitions. Word has length 263 [2023-11-22 22:40:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:02,145 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1260 transitions. [2023-11-22 22:40:02,146 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 22:40:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1260 transitions. [2023-11-22 22:40:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-22 22:40:02,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:02,150 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 22:40:02,175 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 22:40:02,368 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 22:40:02,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:02,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 769126334, now seen corresponding path program 1 times [2023-11-22 22:40:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63109369] [2023-11-22 22:40:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 22:40:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 22:40:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-22 22:40:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-22 22:40:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 22:40:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:02,838 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 22:40:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63109369] [2023-11-22 22:40:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63109369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975085423] [2023-11-22 22:40:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:02,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:02,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:02,841 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 22:40:02,858 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 22:40:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:03,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 22:40:03,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:03,258 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 22:40:03,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:03,383 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 22:40:03,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975085423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:03,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:03,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-22 22:40:03,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574047660] [2023-11-22 22:40:03,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:03,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 22:40:03,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 22:40:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:40:03,387 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 22:40:03,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:03,574 INFO L93 Difference]: Finished difference Result 1552 states and 2534 transitions. [2023-11-22 22:40:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:40:03,575 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 22:40:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:03,579 INFO L225 Difference]: With dead ends: 1552 [2023-11-22 22:40:03,579 INFO L226 Difference]: Without dead ends: 793 [2023-11-22 22:40:03,580 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 22:40:03,581 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 22:40:03,581 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 22:40:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-22 22:40:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-22 22:40:03,600 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 22:40:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1290 transitions. [2023-11-22 22:40:03,603 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1290 transitions. Word has length 264 [2023-11-22 22:40:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:03,603 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1290 transitions. [2023-11-22 22:40:03,604 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 22:40:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1290 transitions. [2023-11-22 22:40:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-11-22 22:40:03,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:03,609 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 22:40:03,629 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 22:40:03,826 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 22:40:03,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:03,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1177535992, now seen corresponding path program 2 times [2023-11-22 22:40:03,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:03,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033679281] [2023-11-22 22:40:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:03,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 22:40:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 22:40:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-22 22:40:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 22:40:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,252 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 22:40:04,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033679281] [2023-11-22 22:40:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033679281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388551907] [2023-11-22 22:40:04,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:40:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:04,254 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 22:40:04,258 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 22:40:04,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:04,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:04,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 22:40:04,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:04,855 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 22:40:04,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:04,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388551907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:04,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:04,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-22 22:40:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315358694] [2023-11-22 22:40:04,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:04,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:04,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:40:04,858 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 22:40:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:05,067 INFO L93 Difference]: Finished difference Result 1286 states and 2098 transitions. [2023-11-22 22:40:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:40:05,067 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 22:40:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:05,071 INFO L225 Difference]: With dead ends: 1286 [2023-11-22 22:40:05,071 INFO L226 Difference]: Without dead ends: 793 [2023-11-22 22:40:05,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:40:05,072 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 22:40:05,072 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 22:40:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-22 22:40:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-22 22:40:05,090 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 22:40:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1289 transitions. [2023-11-22 22:40:05,092 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1289 transitions. Word has length 279 [2023-11-22 22:40:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1289 transitions. [2023-11-22 22:40:05,093 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 22:40:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1289 transitions. [2023-11-22 22:40:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-11-22 22:40:05,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:05,134 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 22:40:05,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 22:40:05,335 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 22:40:05,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:05,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2016569654, now seen corresponding path program 1 times [2023-11-22 22:40:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744138233] [2023-11-22 22:40:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 22:40:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-22 22:40:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-22 22:40:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-22 22:40:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,762 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 22:40:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744138233] [2023-11-22 22:40:05,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744138233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:05,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666742915] [2023-11-22 22:40:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:05,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:05,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:05,764 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 22:40:05,782 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 22:40:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 22:40:06,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:06,238 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 22:40:06,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:06,336 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 22:40:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666742915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:06,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 22:40:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282759467] [2023-11-22 22:40:06,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:06,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:40:06,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:40:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:40:06,340 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 22:40:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:06,582 INFO L93 Difference]: Finished difference Result 1536 states and 2509 transitions. [2023-11-22 22:40:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 22:40:06,583 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 22:40:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:06,586 INFO L225 Difference]: With dead ends: 1536 [2023-11-22 22:40:06,586 INFO L226 Difference]: Without dead ends: 825 [2023-11-22 22:40:06,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:06,588 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:06,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 12199 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:40:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-22 22:40:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2023-11-22 22:40:06,606 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 22:40:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1337 transitions. [2023-11-22 22:40:06,609 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1337 transitions. Word has length 279 [2023-11-22 22:40:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:06,609 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1337 transitions. [2023-11-22 22:40:06,609 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 22:40:06,609 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1337 transitions. [2023-11-22 22:40:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-22 22:40:06,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:06,612 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 22:40:06,635 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 22:40:06,828 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 22:40:06,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:06,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1949813366, now seen corresponding path program 2 times [2023-11-22 22:40:06,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42592204] [2023-11-22 22:40:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 22:40:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 22:40:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 22:40:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,450 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 22:40:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42592204] [2023-11-22 22:40:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42592204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:07,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:40:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068738728] [2023-11-22 22:40:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:07,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:40:07,454 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 22:40:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:07,500 INFO L93 Difference]: Finished difference Result 829 states and 1341 transitions. [2023-11-22 22:40:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:07,500 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 22:40:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:07,504 INFO L225 Difference]: With dead ends: 829 [2023-11-22 22:40:07,504 INFO L226 Difference]: Without dead ends: 827 [2023-11-22 22:40:07,505 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 22:40:07,505 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 22:40:07,506 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 22:40:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-22 22:40:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2023-11-22 22:40:07,525 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 22:40:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1339 transitions. [2023-11-22 22:40:07,529 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1339 transitions. Word has length 291 [2023-11-22 22:40:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:07,529 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1339 transitions. [2023-11-22 22:40:07,530 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 22:40:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1339 transitions. [2023-11-22 22:40:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-22 22:40:07,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:07,532 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 22:40:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 22:40:07,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 316398432, now seen corresponding path program 1 times [2023-11-22 22:40:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301897830] [2023-11-22 22:40:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 22:40:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 22:40:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 22:40:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,054 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 22:40:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:08,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301897830] [2023-11-22 22:40:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301897830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:40:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650402821] [2023-11-22 22:40:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:08,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:40:08,057 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 22:40:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:08,113 INFO L93 Difference]: Finished difference Result 1325 states and 2152 transitions. [2023-11-22 22:40:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:08,114 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 22:40:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:08,117 INFO L225 Difference]: With dead ends: 1325 [2023-11-22 22:40:08,117 INFO L226 Difference]: Without dead ends: 830 [2023-11-22 22:40:08,118 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 22:40:08,119 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 22:40:08,119 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 22:40:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-22 22:40:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 829. [2023-11-22 22:40:08,144 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 22:40:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1341 transitions. [2023-11-22 22:40:08,147 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1341 transitions. Word has length 292 [2023-11-22 22:40:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:08,148 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1341 transitions. [2023-11-22 22:40:08,148 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 22:40:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1341 transitions. [2023-11-22 22:40:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-22 22:40:08,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:08,151 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 22:40:08,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 22:40:08,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:08,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1007985616, now seen corresponding path program 1 times [2023-11-22 22:40:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413463195] [2023-11-22 22:40:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-22 22:40:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-22 22:40:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-22 22:40:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:09,867 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 22:40:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413463195] [2023-11-22 22:40:09,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413463195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:09,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:09,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 22:40:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859171831] [2023-11-22 22:40:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:09,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:40:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:40:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:09,869 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 22:40:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:10,267 INFO L93 Difference]: Finished difference Result 2545 states and 4140 transitions. [2023-11-22 22:40:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 22:40:10,268 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 22:40:10,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:10,275 INFO L225 Difference]: With dead ends: 2545 [2023-11-22 22:40:10,275 INFO L226 Difference]: Without dead ends: 1980 [2023-11-22 22:40:10,276 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 22:40:10,277 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 4643 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 22:40:10,277 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 22:40:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2023-11-22 22:40:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 845. [2023-11-22 22:40:10,306 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 22:40:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1365 transitions. [2023-11-22 22:40:10,309 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1365 transitions. Word has length 293 [2023-11-22 22:40:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:10,309 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1365 transitions. [2023-11-22 22:40:10,309 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 22:40:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1365 transitions. [2023-11-22 22:40:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-22 22:40:10,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:10,312 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 22:40:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 22:40:10,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:10,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash 144252612, now seen corresponding path program 1 times [2023-11-22 22:40:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:10,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230095483] [2023-11-22 22:40:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:10,801 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 22:40:10,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230095483] [2023-11-22 22:40:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230095483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:10,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:10,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:40:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184309886] [2023-11-22 22:40:10,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:10,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:10,804 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 22:40:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:11,530 INFO L93 Difference]: Finished difference Result 2927 states and 4729 transitions. [2023-11-22 22:40:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:40:11,530 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 22:40:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:11,536 INFO L225 Difference]: With dead ends: 2927 [2023-11-22 22:40:11,536 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:11,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:40:11,538 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 2021 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:11,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 7051 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 22:40:11,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 849. [2023-11-22 22:40:11,568 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 22:40:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1369 transitions. [2023-11-22 22:40:11,570 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1369 transitions. Word has length 294 [2023-11-22 22:40:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1369 transitions. [2023-11-22 22:40:11,572 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 22:40:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1369 transitions. [2023-11-22 22:40:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-22 22:40:11,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:11,574 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 22:40:11,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 22:40:11,574 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:11,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash 489080774, now seen corresponding path program 1 times [2023-11-22 22:40:11,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:11,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178555695] [2023-11-22 22:40:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:11,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:12,728 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 22:40:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:12,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178555695] [2023-11-22 22:40:12,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178555695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:12,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:40:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721000684] [2023-11-22 22:40:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:12,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:40:12,731 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 22:40:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:12,869 INFO L93 Difference]: Finished difference Result 2077 states and 3374 transitions. [2023-11-22 22:40:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:40:12,870 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 22:40:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:12,876 INFO L225 Difference]: With dead ends: 2077 [2023-11-22 22:40:12,876 INFO L226 Difference]: Without dead ends: 1570 [2023-11-22 22:40:12,877 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 22:40:12,877 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1690 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 22:40:12,878 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 22:40:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-11-22 22:40:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 959. [2023-11-22 22:40:12,908 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 22:40:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1549 transitions. [2023-11-22 22:40:12,910 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1549 transitions. Word has length 294 [2023-11-22 22:40:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:12,911 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1549 transitions. [2023-11-22 22:40:12,911 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 22:40:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1549 transitions. [2023-11-22 22:40:12,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-22 22:40:12,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:12,914 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 22:40:12,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 22:40:12,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:12,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash 934062578, now seen corresponding path program 1 times [2023-11-22 22:40:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:12,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252940224] [2023-11-22 22:40:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:12,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,356 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 22:40:13,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:13,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252940224] [2023-11-22 22:40:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252940224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:13,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:40:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577164035] [2023-11-22 22:40:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:13,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:13,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:13,359 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 22:40:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:13,480 INFO L93 Difference]: Finished difference Result 2166 states and 3511 transitions. [2023-11-22 22:40:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:40:13,481 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 22:40:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:13,487 INFO L225 Difference]: With dead ends: 2166 [2023-11-22 22:40:13,487 INFO L226 Difference]: Without dead ends: 1549 [2023-11-22 22:40:13,489 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 22:40:13,489 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:13,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2450 Valid, 4140 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:40:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-11-22 22:40:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1014. [2023-11-22 22:40:13,523 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 22:40:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1634 transitions. [2023-11-22 22:40:13,526 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1634 transitions. Word has length 295 [2023-11-22 22:40:13,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:13,527 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 1634 transitions. [2023-11-22 22:40:13,527 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 22:40:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1634 transitions. [2023-11-22 22:40:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-22 22:40:13,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:13,530 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 22:40:13,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 22:40:13,531 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:13,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash -418457136, now seen corresponding path program 1 times [2023-11-22 22:40:13,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202369224] [2023-11-22 22:40:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:13,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:14,749 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 22:40:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202369224] [2023-11-22 22:40:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202369224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:14,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:40:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55491146] [2023-11-22 22:40:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:14,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:14,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:14,752 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 22:40:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:14,959 INFO L93 Difference]: Finished difference Result 2709 states and 4396 transitions. [2023-11-22 22:40:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:14,960 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 22:40:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:14,966 INFO L225 Difference]: With dead ends: 2709 [2023-11-22 22:40:14,967 INFO L226 Difference]: Without dead ends: 2057 [2023-11-22 22:40:14,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:40:14,968 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 22:40:14,969 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 22:40:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2023-11-22 22:40:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1418. [2023-11-22 22:40:15,024 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 22:40:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2291 transitions. [2023-11-22 22:40:15,027 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2291 transitions. Word has length 295 [2023-11-22 22:40:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:15,028 INFO L495 AbstractCegarLoop]: Abstraction has 1418 states and 2291 transitions. [2023-11-22 22:40:15,028 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 22:40:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2291 transitions. [2023-11-22 22:40:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-11-22 22:40:15,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:15,035 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 22:40:15,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 22:40:15,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:15,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash 525032142, now seen corresponding path program 1 times [2023-11-22 22:40:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420628649] [2023-11-22 22:40:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2023-11-22 22:40:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-11-22 22:40:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-11-22 22:40:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2023-11-22 22:40:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 22:40:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,896 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 22:40:15,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420628649] [2023-11-22 22:40:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420628649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:15,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:15,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:40:15,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059066769] [2023-11-22 22:40:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:15,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:15,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:15,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:40:15,900 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 22:40:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:15,950 INFO L93 Difference]: Finished difference Result 2071 states and 3353 transitions. [2023-11-22 22:40:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:15,951 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 22:40:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:15,959 INFO L225 Difference]: With dead ends: 2071 [2023-11-22 22:40:15,960 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:15,961 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 22:40:15,962 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 22:40:15,962 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 22:40:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:16,008 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 22:40:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2292 transitions. [2023-11-22 22:40:16,012 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2292 transitions. Word has length 652 [2023-11-22 22:40:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:16,012 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2292 transitions. [2023-11-22 22:40:16,013 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 22:40:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2292 transitions. [2023-11-22 22:40:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2023-11-22 22:40:16,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:16,020 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 22:40:16,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 22:40:16,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:16,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1602881813, now seen corresponding path program 1 times [2023-11-22 22:40:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898077261] [2023-11-22 22:40:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-11-22 22:40:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2023-11-22 22:40:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-11-22 22:40:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 22:40:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 22:40:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:16,909 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 22:40:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898077261] [2023-11-22 22:40:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898077261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4264066] [2023-11-22 22:40:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:16,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:16,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:16,912 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 22:40:16,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 22:40:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 3349 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 22:40:17,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:18,548 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 22:40:18,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:19,150 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 22:40:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4264066] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 22:40:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206957579] [2023-11-22 22:40:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:19,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:19,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:19,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:40:19,155 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 22:40:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:19,368 INFO L93 Difference]: Finished difference Result 2072 states and 3353 transitions. [2023-11-22 22:40:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:19,369 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 22:40:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:19,374 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:19,374 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:19,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 1311 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:19,376 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:19,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1678 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:40:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:19,433 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 22:40:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2291 transitions. [2023-11-22 22:40:19,436 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2291 transitions. Word has length 653 [2023-11-22 22:40:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:19,437 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2291 transitions. [2023-11-22 22:40:19,438 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 22:40:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2291 transitions. [2023-11-22 22:40:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2023-11-22 22:40:19,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:19,445 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 22:40:19,467 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 22:40:19,664 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 22:40:19,665 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1835575207, now seen corresponding path program 1 times [2023-11-22 22:40:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617849509] [2023-11-22 22:40:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-11-22 22:40:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-22 22:40:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2023-11-22 22:40:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2023-11-22 22:40:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-11-22 22:40:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:20,540 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 22:40:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617849509] [2023-11-22 22:40:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617849509] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76107368] [2023-11-22 22:40:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:20,542 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 22:40:20,563 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 22:40:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 22:40:21,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:22,220 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 22:40:22,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:22,886 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 22:40:22,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76107368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 22:40:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417958369] [2023-11-22 22:40:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:22,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:40:22,890 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 22:40:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:23,070 INFO L93 Difference]: Finished difference Result 2072 states and 3351 transitions. [2023-11-22 22:40:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:23,071 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 22:40:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:23,076 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:23,076 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:23,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:23,078 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 22:40:23,079 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 22:40:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:23,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:23,157 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 22:40:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2290 transitions. [2023-11-22 22:40:23,161 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2290 transitions. Word has length 654 [2023-11-22 22:40:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2290 transitions. [2023-11-22 22:40:23,162 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 22:40:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2290 transitions. [2023-11-22 22:40:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2023-11-22 22:40:23,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:23,170 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 22:40:23,192 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 22:40:23,392 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 22:40:23,393 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:23,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -922972375, now seen corresponding path program 1 times [2023-11-22 22:40:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115230982] [2023-11-22 22:40:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2023-11-22 22:40:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2023-11-22 22:40:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:40:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2023-11-22 22:40:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2023-11-22 22:40:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,271 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 22:40:24,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115230982] [2023-11-22 22:40:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115230982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389642452] [2023-11-22 22:40:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:24,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:24,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:24,273 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 22:40:24,297 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 22:40:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:24,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 3355 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 22:40:24,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:25,811 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 22:40:25,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:26,355 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 22:40:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389642452] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 22:40:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572136128] [2023-11-22 22:40:26,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:40:26,358 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 22:40:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:26,522 INFO L93 Difference]: Finished difference Result 2072 states and 3349 transitions. [2023-11-22 22:40:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:26,523 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 22:40:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:26,529 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:26,529 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:26,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1315 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:26,531 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 22:40:26,531 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 22:40:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:26,569 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 22:40:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2289 transitions. [2023-11-22 22:40:26,572 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2289 transitions. Word has length 655 [2023-11-22 22:40:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:26,572 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2289 transitions. [2023-11-22 22:40:26,573 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 22:40:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2289 transitions. [2023-11-22 22:40:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-11-22 22:40:26,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:26,579 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 22:40:26,602 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 22:40:26,792 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 22:40:26,792 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:26,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash 201308837, now seen corresponding path program 1 times [2023-11-22 22:40:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:26,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179126411] [2023-11-22 22:40:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:26,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2023-11-22 22:40:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-11-22 22:40:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-22 22:40:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-22 22:40:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 22:40:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,494 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 22:40:27,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179126411] [2023-11-22 22:40:27,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179126411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:27,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711313071] [2023-11-22 22:40:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:27,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:27,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:27,496 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 22:40:27,516 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 22:40:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:28,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 3358 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 22:40:28,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:28,959 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 22:40:28,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:29,518 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 22:40:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711313071] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:29,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 14] total 19 [2023-11-22 22:40:29,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741366953] [2023-11-22 22:40:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:40:29,522 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 22:40:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:29,724 INFO L93 Difference]: Finished difference Result 2072 states and 3347 transitions. [2023-11-22 22:40:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:29,725 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 22:40:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:29,740 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:29,745 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:29,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1335 GetRequests, 1317 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:29,748 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 22:40:29,749 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 22:40:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:29,791 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 22:40:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2288 transitions. [2023-11-22 22:40:29,793 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2288 transitions. Word has length 656 [2023-11-22 22:40:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:29,794 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2288 transitions. [2023-11-22 22:40:29,794 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 22:40:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2288 transitions. [2023-11-22 22:40:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-11-22 22:40:29,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:29,800 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 22:40:29,823 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 22:40:30,022 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 22:40:30,023 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:30,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1392344487, now seen corresponding path program 1 times [2023-11-22 22:40:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232116204] [2023-11-22 22:40:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2023-11-22 22:40:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-11-22 22:40:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:40:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2023-11-22 22:40:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-11-22 22:40:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,873 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 22:40:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232116204] [2023-11-22 22:40:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232116204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026748127] [2023-11-22 22:40:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:30,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:30,875 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 22:40:30,894 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 22:40:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:31,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:40:31,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:32,236 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 22:40:32,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026748127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:32,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:32,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:40:32,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303615688] [2023-11-22 22:40:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:32,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:32,241 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 22:40:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:32,609 INFO L93 Difference]: Finished difference Result 2072 states and 3345 transitions. [2023-11-22 22:40:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:32,610 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 22:40:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:32,614 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:32,614 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:32,617 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 22:40:32,617 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 22:40:32,617 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 22:40:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:32,657 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 22:40:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2286 transitions. [2023-11-22 22:40:32,659 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2286 transitions. Word has length 657 [2023-11-22 22:40:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:32,660 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2286 transitions. [2023-11-22 22:40:32,660 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 22:40:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2286 transitions. [2023-11-22 22:40:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2023-11-22 22:40:32,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:32,666 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 22:40:32,690 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 22:40:32,886 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 22:40:32,887 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 660060979, now seen corresponding path program 1 times [2023-11-22 22:40:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460935687] [2023-11-22 22:40:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2023-11-22 22:40:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2023-11-22 22:40:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 22:40:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2023-11-22 22:40:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-22 22:40:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:33,725 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 22:40:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460935687] [2023-11-22 22:40:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460935687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452032666] [2023-11-22 22:40:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:33,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:33,728 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 22:40:33,752 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 22:40:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:40:34,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:35,112 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 22:40:35,113 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:35,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452032666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:35,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:35,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:40:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169352663] [2023-11-22 22:40:35,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:35,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:35,116 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 22:40:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:35,448 INFO L93 Difference]: Finished difference Result 2072 states and 3341 transitions. [2023-11-22 22:40:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:35,449 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 22:40:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:35,451 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:35,451 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:35,453 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 22:40:35,454 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 22:40:35,454 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 22:40:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:35,495 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 22:40:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2284 transitions. [2023-11-22 22:40:35,497 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2284 transitions. Word has length 658 [2023-11-22 22:40:35,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:35,498 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2284 transitions. [2023-11-22 22:40:35,498 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 22:40:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2284 transitions. [2023-11-22 22:40:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2023-11-22 22:40:35,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:35,506 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 22:40:35,527 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 22:40:35,715 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 22:40:35,715 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:35,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -303985549, now seen corresponding path program 1 times [2023-11-22 22:40:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197767426] [2023-11-22 22:40:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:35,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2023-11-22 22:40:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-11-22 22:40:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-22 22:40:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2023-11-22 22:40:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2023-11-22 22:40:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,454 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 22:40:36,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:36,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197767426] [2023-11-22 22:40:36,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197767426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:36,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737484361] [2023-11-22 22:40:36,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:36,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:36,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:36,456 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 22:40:36,482 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 22:40:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:37,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 3367 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:40:37,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:37,873 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 22:40:37,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:37,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737484361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:37,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:37,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:40:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236962689] [2023-11-22 22:40:37,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:40:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:40:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:37,876 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 22:40:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:38,222 INFO L93 Difference]: Finished difference Result 2072 states and 3337 transitions. [2023-11-22 22:40:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:38,223 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 22:40:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:38,225 INFO L225 Difference]: With dead ends: 2072 [2023-11-22 22:40:38,225 INFO L226 Difference]: Without dead ends: 1419 [2023-11-22 22:40:38,226 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 22:40:38,226 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 22:40:38,226 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 22:40:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2023-11-22 22:40:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1419. [2023-11-22 22:40:38,263 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 22:40:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 2282 transitions. [2023-11-22 22:40:38,265 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 2282 transitions. Word has length 659 [2023-11-22 22:40:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:38,265 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 2282 transitions. [2023-11-22 22:40:38,266 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 22:40:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 2282 transitions. [2023-11-22 22:40:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-11-22 22:40:38,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:38,273 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 22:40:38,299 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 22:40:38,492 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 22:40:38,493 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:38,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1739487636, now seen corresponding path program 1 times [2023-11-22 22:40:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872974994] [2023-11-22 22:40:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2023-11-22 22:40:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-22 22:40:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 22:40:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-22 22:40:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:40:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,172 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 22:40:39,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872974994] [2023-11-22 22:40:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872974994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:39,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605212010] [2023-11-22 22:40:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:39,173 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 22:40:39,174 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 22:40:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 3370 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:40:39,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:39,890 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 22:40:39,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:39,924 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 22:40:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605212010] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:39,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:40:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246029722] [2023-11-22 22:40:39,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:40:39,927 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 22:40:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:39,981 INFO L93 Difference]: Finished difference Result 2073 states and 3335 transitions. [2023-11-22 22:40:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:39,982 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 22:40:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:39,985 INFO L225 Difference]: With dead ends: 2073 [2023-11-22 22:40:39,985 INFO L226 Difference]: Without dead ends: 1420 [2023-11-22 22:40:39,986 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 22:40:39,987 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 22:40:39,988 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 22:40:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-11-22 22:40:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2023-11-22 22:40:40,033 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 22:40:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2283 transitions. [2023-11-22 22:40:40,036 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2283 transitions. Word has length 660 [2023-11-22 22:40:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:40,037 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 2283 transitions. [2023-11-22 22:40:40,037 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 22:40:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2283 transitions. [2023-11-22 22:40:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2023-11-22 22:40:40,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:40,043 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 22:40:40,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 22:40:40,264 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 22:40:40,265 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:40,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 364886046, now seen corresponding path program 1 times [2023-11-22 22:40:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:40,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939564619] [2023-11-22 22:40:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:40,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-11-22 22:40:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-11-22 22:40:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2023-11-22 22:40:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-22 22:40:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-22 22:40:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,963 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 22:40:40,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939564619] [2023-11-22 22:40:40,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939564619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688373924] [2023-11-22 22:40:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:40,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:40,966 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 22:40:40,987 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 22:40:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:41,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 3377 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:40:41,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:41,740 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 22:40:41,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:41,769 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 22:40:41,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688373924] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:41,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:41,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:40:41,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556234875] [2023-11-22 22:40:41,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:41,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:41,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:41,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:41,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:40:41,771 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 22:40:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:41,819 INFO L93 Difference]: Finished difference Result 2075 states and 3337 transitions. [2023-11-22 22:40:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:41,820 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 22:40:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:41,822 INFO L225 Difference]: With dead ends: 2075 [2023-11-22 22:40:41,822 INFO L226 Difference]: Without dead ends: 1421 [2023-11-22 22:40:41,823 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 22:40:41,824 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 22:40:41,824 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 22:40:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-11-22 22:40:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1421. [2023-11-22 22:40:41,859 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 22:40:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2284 transitions. [2023-11-22 22:40:41,861 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2284 transitions. Word has length 661 [2023-11-22 22:40:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:41,861 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2284 transitions. [2023-11-22 22:40:41,862 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 22:40:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2284 transitions. [2023-11-22 22:40:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2023-11-22 22:40:41,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:41,868 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 22:40:41,889 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 22:40:42,084 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 22:40:42,085 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:42,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1628361053, now seen corresponding path program 1 times [2023-11-22 22:40:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796202769] [2023-11-22 22:40:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-11-22 22:40:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2023-11-22 22:40:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2023-11-22 22:40:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 22:40:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:40:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:42,793 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 22:40:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796202769] [2023-11-22 22:40:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796202769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209307393] [2023-11-22 22:40:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:42,797 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 22:40:42,797 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 22:40:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:43,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:40:43,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:43,542 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 22:40:43,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:43,574 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 22:40:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209307393] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:40:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745127515] [2023-11-22 22:40:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:40:43,577 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 22:40:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:43,620 INFO L93 Difference]: Finished difference Result 2077 states and 3339 transitions. [2023-11-22 22:40:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:43,621 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 22:40:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:43,624 INFO L225 Difference]: With dead ends: 2077 [2023-11-22 22:40:43,624 INFO L226 Difference]: Without dead ends: 1422 [2023-11-22 22:40:43,625 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 22:40:43,626 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 22:40:43,626 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 22:40:43,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2023-11-22 22:40:43,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1422. [2023-11-22 22:40:43,666 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 22:40:43,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2285 transitions. [2023-11-22 22:40:43,668 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2285 transitions. Word has length 662 [2023-11-22 22:40:43,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:43,670 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2285 transitions. [2023-11-22 22:40:43,670 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 22:40:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2285 transitions. [2023-11-22 22:40:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-11-22 22:40:43,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:43,677 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 22:40:43,700 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 22:40:43,893 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 22:40:43,893 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:43,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash 334120749, now seen corresponding path program 1 times [2023-11-22 22:40:43,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950772077] [2023-11-22 22:40:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2023-11-22 22:40:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2023-11-22 22:40:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2023-11-22 22:40:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 22:40:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2023-11-22 22:40:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:44,495 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 22:40:44,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:44,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950772077] [2023-11-22 22:40:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950772077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:44,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495007004] [2023-11-22 22:40:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:44,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:44,504 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 22:40:44,513 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 22:40:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:45,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 3391 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:40:45,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:45,245 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 22:40:45,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:45,283 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 22:40:45,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495007004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:45,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:45,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:40:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288110933] [2023-11-22 22:40:45,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:45,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:40:45,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:45,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:40:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:40:45,287 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 22:40:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:45,386 INFO L93 Difference]: Finished difference Result 2081 states and 3345 transitions. [2023-11-22 22:40:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:45,387 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 22:40:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:45,389 INFO L225 Difference]: With dead ends: 2081 [2023-11-22 22:40:45,389 INFO L226 Difference]: Without dead ends: 1425 [2023-11-22 22:40:45,391 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 22:40:45,391 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 22:40:45,391 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 22:40:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2023-11-22 22:40:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1425. [2023-11-22 22:40:45,463 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 22:40:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2288 transitions. [2023-11-22 22:40:45,465 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2288 transitions. Word has length 663 [2023-11-22 22:40:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:45,466 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2288 transitions. [2023-11-22 22:40:45,466 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 22:40:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2288 transitions. [2023-11-22 22:40:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2023-11-22 22:40:45,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:45,472 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 22:40:45,494 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 22:40:45,693 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 22:40:45,694 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:45,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 326171280, now seen corresponding path program 2 times [2023-11-22 22:40:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951193769] [2023-11-22 22:40:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 22:40:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 22:40:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 22:40:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 22:40:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-22 22:40:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2023-11-22 22:40:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-22 22:40:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-11-22 22:40:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 22:40:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2023-11-22 22:40:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:46,652 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 22:40:46,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951193769] [2023-11-22 22:40:46,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951193769] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:46,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988638348] [2023-11-22 22:40:46,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:40:46,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:46,654 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 22:40:46,657 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 22:40:47,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:47,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:47,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-22 22:40:47,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:48,295 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 22:40:48,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:48,714 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 22:40:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988638348] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:48,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 20 [2023-11-22 22:40:48,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168703069] [2023-11-22 22:40:48,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:48,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:40:48,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:48,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:40:48,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:48,717 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 22:40:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:50,953 INFO L93 Difference]: Finished difference Result 5464 states and 8758 transitions. [2023-11-22 22:40:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 22:40:50,955 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 22:40:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:50,962 INFO L225 Difference]: With dead ends: 5464 [2023-11-22 22:40:50,962 INFO L226 Difference]: Without dead ends: 3402 [2023-11-22 22:40:50,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1350 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 22:40:50,967 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 5315 mSDsluCounter, 5545 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5320 Valid, 6439 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-22 22:40:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2023-11-22 22:40:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 1433. [2023-11-22 22:40:51,027 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 22:40:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2297 transitions. [2023-11-22 22:40:51,029 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2297 transitions. Word has length 666 [2023-11-22 22:40:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:51,029 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 2297 transitions. [2023-11-22 22:40:51,029 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 22:40:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2297 transitions. [2023-11-22 22:40:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2023-11-22 22:40:51,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:51,035 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 22:40:51,054 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 22:40:51,245 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 22:40:51,245 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:51,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:51,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1525228428, now seen corresponding path program 1 times [2023-11-22 22:40:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525621485] [2023-11-22 22:40:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:51,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:40:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:40:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:40:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:40:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:40:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2023-11-22 22:40:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-11-22 22:40:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-11-22 22:40:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2023-11-22 22:40:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2023-11-22 22:40:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,158 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 22:40:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525621485] [2023-11-22 22:40:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525621485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864402721] [2023-11-22 22:40:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:52,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:52,163 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 22:40:52,182 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 22:40:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:52,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 22:40:52,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:52,995 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 22:40:52,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:53,099 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 22:40:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864402721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:53,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:53,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 22:40:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045992173] [2023-11-22 22:40:53,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:53,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:40:53,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:40:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:40:53,102 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 22:40:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:53,301 INFO L93 Difference]: Finished difference Result 2100 states and 3367 transitions. [2023-11-22 22:40:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 22:40:53,302 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 22:40:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:53,304 INFO L225 Difference]: With dead ends: 2100 [2023-11-22 22:40:53,304 INFO L226 Difference]: Without dead ends: 1437 [2023-11-22 22:40:53,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1363 GetRequests, 1345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-22 22:40:53,306 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 22:40:53,307 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 22:40:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2023-11-22 22:40:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1437. [2023-11-22 22:40:53,362 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 22:40:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2301 transitions. [2023-11-22 22:40:53,364 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2301 transitions. Word has length 668 [2023-11-22 22:40:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2301 transitions. [2023-11-22 22:40:53,365 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 22:40:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2301 transitions. [2023-11-22 22:40:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2023-11-22 22:40:53,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:53,372 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 22:40:53,400 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 22:40:53,588 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 22:40:53,588 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:53,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1590744780, now seen corresponding path program 2 times [2023-11-22 22:40:53,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:53,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557040727] [2023-11-22 22:40:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:53,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:40:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:40:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:40:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:40:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:40:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2023-11-22 22:40:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-11-22 22:40:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2023-11-22 22:40:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:40:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2023-11-22 22:40:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:54,274 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 22:40:54,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:54,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557040727] [2023-11-22 22:40:54,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557040727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:54,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280020661] [2023-11-22 22:40:54,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:40:54,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:54,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:54,280 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 22:40:54,281 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 22:40:54,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:54,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:54,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 22:40:54,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:55,820 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 22:40:55,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:56,559 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 22:40:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280020661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:56,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2023-11-22 22:40:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374970660] [2023-11-22 22:40:56,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:40:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:40:56,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:56,563 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 22:40:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:57,432 INFO L93 Difference]: Finished difference Result 2652 states and 4248 transitions. [2023-11-22 22:40:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:40:57,434 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 22:40:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:57,436 INFO L225 Difference]: With dead ends: 2652 [2023-11-22 22:40:57,436 INFO L226 Difference]: Without dead ends: 1449 [2023-11-22 22:40:57,438 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 22:40:57,438 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1295 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:57,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 3504 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 22:40:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-22 22:40:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1439. [2023-11-22 22:40:57,490 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 22:40:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2299 transitions. [2023-11-22 22:40:57,492 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2299 transitions. Word has length 672 [2023-11-22 22:40:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:57,492 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 2299 transitions. [2023-11-22 22:40:57,492 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 22:40:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2299 transitions. [2023-11-22 22:40:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-11-22 22:40:57,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:57,497 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 22:40:57,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-22 22:40:57,698 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 22:40:57,698 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:57,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash 892996696, now seen corresponding path program 1 times [2023-11-22 22:40:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070051777] [2023-11-22 22:40:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:40:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:40:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:40:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:40:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:40:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2023-11-22 22:40:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2023-11-22 22:40:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2023-11-22 22:40:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2023-11-22 22:40:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2023-11-22 22:40:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:58,362 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 22:40:58,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:58,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070051777] [2023-11-22 22:40:58,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070051777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:58,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625321462] [2023-11-22 22:40:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:58,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:58,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:58,365 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 22:40:58,365 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 22:40:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:59,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 3455 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 22:40:59,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:59,133 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 22:40:59,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:59,263 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 22:40:59,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625321462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:59,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:59,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 22:40:59,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723953847] [2023-11-22 22:40:59,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:59,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:40:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:59,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:40:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:59,266 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 22:40:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:59,401 INFO L93 Difference]: Finished difference Result 2110 states and 3371 transitions. [2023-11-22 22:40:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:40:59,401 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 22:40:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:59,404 INFO L225 Difference]: With dead ends: 2110 [2023-11-22 22:40:59,404 INFO L226 Difference]: Without dead ends: 1443 [2023-11-22 22:40:59,405 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 22:40:59,406 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 11 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 22:40:59,406 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 22:40:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-22 22:40:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2023-11-22 22:40:59,463 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 22:40:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2303 transitions. [2023-11-22 22:40:59,465 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2303 transitions. Word has length 673 [2023-11-22 22:40:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:59,466 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2303 transitions. [2023-11-22 22:40:59,466 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 22:40:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2303 transitions. [2023-11-22 22:40:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-22 22:40:59,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:59,471 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 22:40:59,494 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 22:40:59,694 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 22:40:59,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:59,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 877917016, now seen corresponding path program 2 times [2023-11-22 22:40:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749840666] [2023-11-22 22:40:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:41:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:41:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:41:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:41:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:41:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2023-11-22 22:41:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-11-22 22:41:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 22:41:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 22:41:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 22:41:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:00,508 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 22:41:00,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749840666] [2023-11-22 22:41:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749840666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061028551] [2023-11-22 22:41:00,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:41:00,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:00,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:00,509 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 22:41:00,510 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 22:41:01,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:41:01,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:41:01,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 22:41:01,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:01,750 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 22:41:01,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:41:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061028551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:41:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2023-11-22 22:41:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817278259] [2023-11-22 22:41:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 22:41:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 22:41:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:41:01,752 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 22:41:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:03,358 INFO L93 Difference]: Finished difference Result 3449 states and 5500 transitions. [2023-11-22 22:41:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 22:41:03,358 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 22:41:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:03,362 INFO L225 Difference]: With dead ends: 3449 [2023-11-22 22:41:03,362 INFO L226 Difference]: Without dead ends: 2778 [2023-11-22 22:41:03,363 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 22:41:03,364 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 4196 mSDsluCounter, 7562 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:03,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4196 Valid, 8811 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 22:41:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2023-11-22 22:41:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1444. [2023-11-22 22:41:03,427 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 22:41:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2305 transitions. [2023-11-22 22:41:03,428 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2305 transitions. Word has length 677 [2023-11-22 22:41:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2305 transitions. [2023-11-22 22:41:03,430 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 22:41:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2305 transitions. [2023-11-22 22:41:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2023-11-22 22:41:03,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:03,435 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 22:41:03,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:03,636 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 22:41:03,636 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:03,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:03,637 INFO L85 PathProgramCache]: Analyzing trace with hash 484890006, now seen corresponding path program 1 times [2023-11-22 22:41:03,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:03,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566280243] [2023-11-22 22:41:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:41:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:41:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:41:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:41:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:41:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2023-11-22 22:41:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2023-11-22 22:41:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2023-11-22 22:41:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2023-11-22 22:41:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 22:41:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,518 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 22:41:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566280243] [2023-11-22 22:41:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566280243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146458791] [2023-11-22 22:41:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:04,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:04,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:04,519 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 22:41:04,521 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 22:41:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:05,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 3484 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 22:41:05,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:05,389 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 22:41:05,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:05,526 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 22:41:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146458791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:05,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 9] total 24 [2023-11-22 22:41:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717134220] [2023-11-22 22:41:05,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 22:41:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 22:41:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-22 22:41:05,529 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 22:41:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:05,747 INFO L93 Difference]: Finished difference Result 2120 states and 3381 transitions. [2023-11-22 22:41:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 22:41:05,748 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 22:41:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:05,750 INFO L225 Difference]: With dead ends: 2120 [2023-11-22 22:41:05,751 INFO L226 Difference]: Without dead ends: 1446 [2023-11-22 22:41:05,752 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 22:41:05,752 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 22:41:05,752 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 22:41:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-22 22:41:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2023-11-22 22:41:05,813 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 22:41:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2307 transitions. [2023-11-22 22:41:05,862 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2307 transitions. Word has length 677 [2023-11-22 22:41:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:05,863 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 2307 transitions. [2023-11-22 22:41:05,863 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 22:41:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2307 transitions. [2023-11-22 22:41:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2023-11-22 22:41:05,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:05,869 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 22:41:05,893 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 22:41:06,080 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 22:41:06,080 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:06,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash 991656214, now seen corresponding path program 2 times [2023-11-22 22:41:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057810652] [2023-11-22 22:41:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:41:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:41:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:41:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:41:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:41:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2023-11-22 22:41:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2023-11-22 22:41:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2023-11-22 22:41:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2023-11-22 22:41:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2023-11-22 22:41:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,724 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 22:41:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057810652] [2023-11-22 22:41:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057810652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317862329] [2023-11-22 22:41:06,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:41:06,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:06,729 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 22:41:06,746 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 22:41:07,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:41:07,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:41:07,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-22 22:41:07,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:08,707 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 22:41:08,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:10,874 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 22:41:10,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317862329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:10,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:10,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 10] total 18 [2023-11-22 22:41:10,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933163992] [2023-11-22 22:41:10,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:41:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:41:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:41:10,879 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 22:41:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:23,014 INFO L93 Difference]: Finished difference Result 19140 states and 30644 transitions. [2023-11-22 22:41:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-22 22:41:23,015 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 22:41:23,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:23,035 INFO L225 Difference]: With dead ends: 19140 [2023-11-22 22:41:23,035 INFO L226 Difference]: Without dead ends: 18168 [2023-11-22 22:41:23,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1393 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1401, Invalid=5739, Unknown=0, NotChecked=0, Total=7140 [2023-11-22 22:41:23,042 INFO L413 NwaCegarLoop]: 3844 mSDtfsCounter, 11213 mSDsluCounter, 31445 mSDsCounter, 0 mSdLazyCounter, 13303 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s 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, 8.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:23,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11218 Valid, 35289 Invalid, 13396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 13303 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-22 22:41:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18168 states. [2023-11-22 22:41:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18168 to 2179. [2023-11-22 22:41:23,245 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 22:41:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3466 transitions. [2023-11-22 22:41:23,248 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3466 transitions. Word has length 679 [2023-11-22 22:41:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 2179 states and 3466 transitions. [2023-11-22 22:41:23,249 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 22:41:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3466 transitions. [2023-11-22 22:41:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2023-11-22 22:41:23,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:23,257 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 22:41:23,277 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 22:41:23,472 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 22:41:23,473 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:23,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash 745184673, now seen corresponding path program 1 times [2023-11-22 22:41:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:23,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149818003] [2023-11-22 22:41:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:41:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:41:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:41:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:41:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:41:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2023-11-22 22:41:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2023-11-22 22:41:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2023-11-22 22:41:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2023-11-22 22:41:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2023-11-22 22:41:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,290 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 22:41:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149818003] [2023-11-22 22:41:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149818003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347783217] [2023-11-22 22:41:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:24,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:24,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:24,293 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 22:41:24,293 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 22:41:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:25,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 3505 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 22:41:25,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:25,136 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 22:41:25,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:25,182 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 22:41:25,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347783217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:25,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 22:41:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089513120] [2023-11-22 22:41:25,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:41:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:41:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:41:25,185 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 22:41:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:25,364 INFO L93 Difference]: Finished difference Result 3104 states and 4935 transitions. [2023-11-22 22:41:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:41:25,365 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 22:41:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:25,367 INFO L225 Difference]: With dead ends: 3104 [2023-11-22 22:41:25,367 INFO L226 Difference]: Without dead ends: 2183 [2023-11-22 22:41:25,368 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 22:41:25,369 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 22:41:25,369 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 22:41:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2023-11-22 22:41:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2183. [2023-11-22 22:41:25,503 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 22:41:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 3470 transitions. [2023-11-22 22:41:25,508 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 3470 transitions. Word has length 680 [2023-11-22 22:41:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:25,509 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 3470 transitions. [2023-11-22 22:41:25,509 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 22:41:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 3470 transitions. [2023-11-22 22:41:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-22 22:41:25,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:25,518 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 22:41:25,547 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 22:41:25,744 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 22:41:25,745 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1924152801, now seen corresponding path program 2 times [2023-11-22 22:41:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738575206] [2023-11-22 22:41:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:41:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:41:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:41:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:41:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:41:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2023-11-22 22:41:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:41:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2023-11-22 22:41:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2023-11-22 22:41:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:41:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,703 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 22:41:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738575206] [2023-11-22 22:41:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738575206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756779693] [2023-11-22 22:41:26,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:41:26,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:26,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:26,707 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 22:41:26,724 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 22:41:27,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:41:27,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:41:27,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-22 22:41:27,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:29,871 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 22:41:29,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:39,110 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 22:41:39,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756779693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:39,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:39,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 34 [2023-11-22 22:41:39,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448304949] [2023-11-22 22:41:39,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:39,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-22 22:41:39,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-22 22:41:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 22:41:39,114 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 22:42:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:26,816 INFO L93 Difference]: Finished difference Result 35023 states and 55321 transitions. [2023-11-22 22:42:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 501 states. [2023-11-22 22:42:26,817 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 22:42:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:26,853 INFO L225 Difference]: With dead ends: 35023 [2023-11-22 22:42:26,853 INFO L226 Difference]: Without dead ends: 33834 [2023-11-22 22:42:26,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1991 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 530 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125544 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=22771, Invalid=259721, Unknown=0, NotChecked=0, Total=282492 [2023-11-22 22:42:26,884 INFO L413 NwaCegarLoop]: 2443 mSDtfsCounter, 77341 mSDsluCounter, 46581 mSDsCounter, 0 mSdLazyCounter, 22224 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s 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, 14.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:26,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77341 Valid, 49024 Invalid, 22625 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [401 Valid, 22224 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-11-22 22:42:26,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33834 states. [2023-11-22 22:42:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33834 to 2217. [2023-11-22 22:42:27,320 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 22:42:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3505 transitions. [2023-11-22 22:42:27,323 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3505 transitions. Word has length 684 [2023-11-22 22:42:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:27,323 INFO L495 AbstractCegarLoop]: Abstraction has 2217 states and 3505 transitions. [2023-11-22 22:42:27,324 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 22:42:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3505 transitions. [2023-11-22 22:42:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 22:42:27,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:27,329 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 22:42:27,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:27,530 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 22:42:27,530 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:27,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash -729127804, now seen corresponding path program 1 times [2023-11-22 22:42:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:27,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221731609] [2023-11-22 22:42:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:27,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2023-11-22 22:42:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 22:42:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2023-11-22 22:42:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2023-11-22 22:42:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-22 22:42:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:28,458 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 22:42:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221731609] [2023-11-22 22:42:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221731609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852996938] [2023-11-22 22:42:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:28,460 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 22:42:28,461 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 22:42:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 3541 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-22 22:42:29,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:29,372 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 22:42:29,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:29,539 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 22:42:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852996938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:29,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 10] total 27 [2023-11-22 22:42:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781114525] [2023-11-22 22:42:29,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:29,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-22 22:42:29,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:29,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-22 22:42:29,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2023-11-22 22:42:29,544 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 22:42:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:29,906 INFO L93 Difference]: Finished difference Result 3160 states and 4992 transitions. [2023-11-22 22:42:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-22 22:42:29,907 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 22:42:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:29,910 INFO L225 Difference]: With dead ends: 3160 [2023-11-22 22:42:29,910 INFO L226 Difference]: Without dead ends: 2221 [2023-11-22 22:42:29,911 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 22:42:29,912 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 26 mSDsluCounter, 15769 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 22:42:29,912 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 22:42:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2023-11-22 22:42:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2218. [2023-11-22 22:42:30,248 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 22:42:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3506 transitions. [2023-11-22 22:42:30,251 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3506 transitions. Word has length 685 [2023-11-22 22:42:30,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:30,251 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3506 transitions. [2023-11-22 22:42:30,252 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 22:42:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3506 transitions. [2023-11-22 22:42:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-22 22:42:30,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:30,258 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 22:42:30,283 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 22:42:30,472 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 22:42:30,472 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:30,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -567101309, now seen corresponding path program 2 times [2023-11-22 22:42:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665266368] [2023-11-22 22:42:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2023-11-22 22:42:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2023-11-22 22:42:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2023-11-22 22:42:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2023-11-22 22:42:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 22:42:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,124 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 22:42:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665266368] [2023-11-22 22:42:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665266368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816249127] [2023-11-22 22:42:31,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:31,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:31,128 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 22:42:31,147 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 22:42:31,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:42:31,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:31,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 3548 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-22 22:42:32,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:32,029 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 22:42:32,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816249127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:32,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:42:32,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686281121] [2023-11-22 22:42:32,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:32,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:32,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:42:32,031 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 22:42:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:32,284 INFO L93 Difference]: Finished difference Result 3938 states and 6233 transitions. [2023-11-22 22:42:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:32,285 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 22:42:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:32,288 INFO L225 Difference]: With dead ends: 3938 [2023-11-22 22:42:32,288 INFO L226 Difference]: Without dead ends: 2218 [2023-11-22 22:42:32,290 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 22:42:32,291 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 2 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:32,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4479 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2023-11-22 22:42:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2218. [2023-11-22 22:42:32,479 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 22:42:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3500 transitions. [2023-11-22 22:42:32,610 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3500 transitions. Word has length 686 [2023-11-22 22:42:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:32,611 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3500 transitions. [2023-11-22 22:42:32,611 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 22:42:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3500 transitions. [2023-11-22 22:42:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-11-22 22:42:32,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:32,620 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 22:42:32,647 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 22:42:32,832 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 22:42:32,832 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:32,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash -211648915, now seen corresponding path program 1 times [2023-11-22 22:42:32,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:32,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018889412] [2023-11-22 22:42:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2023-11-22 22:42:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2023-11-22 22:42:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2023-11-22 22:42:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2023-11-22 22:42:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2023-11-22 22:42:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:33,501 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 22:42:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018889412] [2023-11-22 22:42:33,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018889412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022939461] [2023-11-22 22:42:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:33,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:33,503 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 22:42:33,511 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 22:42:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:34,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:34,378 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 22:42:34,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:34,435 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 22:42:34,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022939461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:34,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:34,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737862843] [2023-11-22 22:42:34,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:34,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:34,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:34,438 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 22:42:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:34,690 INFO L93 Difference]: Finished difference Result 3161 states and 4985 transitions. [2023-11-22 22:42:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:34,690 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 22:42:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:34,693 INFO L225 Difference]: With dead ends: 3161 [2023-11-22 22:42:34,693 INFO L226 Difference]: Without dead ends: 2221 [2023-11-22 22:42:34,695 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 22:42:34,695 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 22:42:34,695 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 22:42:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2023-11-22 22:42:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2221. [2023-11-22 22:42:34,895 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 22:42:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 3503 transitions. [2023-11-22 22:42:34,898 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 3503 transitions. Word has length 688 [2023-11-22 22:42:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:34,899 INFO L495 AbstractCegarLoop]: Abstraction has 2221 states and 3503 transitions. [2023-11-22 22:42:34,900 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 22:42:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 3503 transitions. [2023-11-22 22:42:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2023-11-22 22:42:34,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:34,907 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 22:42:34,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:35,107 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 22:42:35,108 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:35,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:35,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2059573353, now seen corresponding path program 2 times [2023-11-22 22:42:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:35,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301453320] [2023-11-22 22:42:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2023-11-22 22:42:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2023-11-22 22:42:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2023-11-22 22:42:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2023-11-22 22:42:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2023-11-22 22:42:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,964 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 22:42:35,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301453320] [2023-11-22 22:42:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301453320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689732896] [2023-11-22 22:42:35,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:35,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:35,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:35,970 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 22:42:35,971 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 22:42:36,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:42:36,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:36,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 22:42:36,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:36,929 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 22:42:36,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:37,008 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 22:42:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689732896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:37,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:37,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 18 [2023-11-22 22:42:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294769048] [2023-11-22 22:42:37,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:42:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:42:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:42:37,011 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 22:42:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:37,293 INFO L93 Difference]: Finished difference Result 3168 states and 4993 transitions. [2023-11-22 22:42:37,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 22:42:37,294 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 22:42:37,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:37,296 INFO L225 Difference]: With dead ends: 3168 [2023-11-22 22:42:37,296 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 22:42:37,297 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 22:42:37,298 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 22:42:37,298 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 22:42:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 22:42:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 22:42:37,488 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 22:42:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3507 transitions. [2023-11-22 22:42:37,491 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3507 transitions. Word has length 691 [2023-11-22 22:42:37,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:37,492 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3507 transitions. [2023-11-22 22:42:37,492 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 22:42:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3507 transitions. [2023-11-22 22:42:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:37,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:37,499 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 22:42:37,512 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 22:42:37,711 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 22:42:37,712 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:37,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1681242473, now seen corresponding path program 3 times [2023-11-22 22:42:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:37,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508149160] [2023-11-22 22:42:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:39,685 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 22:42:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:39,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508149160] [2023-11-22 22:42:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508149160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:42:39,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384259938] [2023-11-22 22:42:39,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:39,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:42:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:42:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:42:39,690 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 22:42:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:40,024 INFO L93 Difference]: Finished difference Result 3172 states and 4993 transitions. [2023-11-22 22:42:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:40,025 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 22:42:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:40,027 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 22:42:40,028 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 22:42:40,029 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 22:42:40,029 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 22:42:40,029 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 22:42:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 22:42:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 22:42:40,199 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 22:42:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3506 transitions. [2023-11-22 22:42:40,201 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3506 transitions. Word has length 695 [2023-11-22 22:42:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:40,201 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3506 transitions. [2023-11-22 22:42:40,202 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 22:42:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3506 transitions. [2023-11-22 22:42:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:40,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:40,209 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 22:42:40,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-22 22:42:40,209 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:40,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:40,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1149373913, now seen corresponding path program 1 times [2023-11-22 22:42:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119249189] [2023-11-22 22:42:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,867 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 22:42:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119249189] [2023-11-22 22:42:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119249189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:41,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:42:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289957908] [2023-11-22 22:42:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:41,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:42:41,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:41,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:42:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:42:41,871 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 22:42:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:42,233 INFO L93 Difference]: Finished difference Result 3172 states and 4991 transitions. [2023-11-22 22:42:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:42,234 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 22:42:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:42,237 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 22:42:42,237 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 22:42:42,239 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 22:42:42,240 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:42,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1670 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 22:42:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 22:42:42,439 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 22:42:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3505 transitions. [2023-11-22 22:42:42,441 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3505 transitions. Word has length 695 [2023-11-22 22:42:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:42,442 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3505 transitions. [2023-11-22 22:42:42,442 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 22:42:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3505 transitions. [2023-11-22 22:42:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:42,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:42,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:42,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-22 22:42:42,447 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:42,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1318992855, now seen corresponding path program 1 times [2023-11-22 22:42:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791140364] [2023-11-22 22:42:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,974 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 22:42:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791140364] [2023-11-22 22:42:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791140364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:43,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:43,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:42:43,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378987782] [2023-11-22 22:42:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:42:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:42:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:42:43,977 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 22:42:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:44,251 INFO L93 Difference]: Finished difference Result 3172 states and 4989 transitions. [2023-11-22 22:42:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:44,252 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 22:42:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:44,254 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 22:42:44,254 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 22:42:44,255 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 22:42:44,255 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 22:42:44,255 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 22:42:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 22:42:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 22:42:44,449 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 22:42:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3504 transitions. [2023-11-22 22:42:44,451 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3504 transitions. Word has length 695 [2023-11-22 22:42:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:44,452 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3504 transitions. [2023-11-22 22:42:44,452 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 22:42:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3504 transitions. [2023-11-22 22:42:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:44,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:44,458 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 22:42:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-22 22:42:44,458 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:44,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash 201275623, now seen corresponding path program 1 times [2023-11-22 22:42:44,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:44,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121098460] [2023-11-22 22:42:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:45,717 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 22:42:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121098460] [2023-11-22 22:42:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121098460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:42:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137862871] [2023-11-22 22:42:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:42:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:42:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:42:45,720 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 22:42:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:46,081 INFO L93 Difference]: Finished difference Result 3172 states and 4987 transitions. [2023-11-22 22:42:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:46,082 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 22:42:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:46,084 INFO L225 Difference]: With dead ends: 3172 [2023-11-22 22:42:46,084 INFO L226 Difference]: Without dead ends: 2225 [2023-11-22 22:42:46,085 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 22:42:46,085 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 22:42:46,085 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 22:42:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2023-11-22 22:42:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2225. [2023-11-22 22:42:46,232 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 22:42:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3503 transitions. [2023-11-22 22:42:46,235 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3503 transitions. Word has length 695 [2023-11-22 22:42:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:46,235 INFO L495 AbstractCegarLoop]: Abstraction has 2225 states and 3503 transitions. [2023-11-22 22:42:46,235 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 22:42:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3503 transitions. [2023-11-22 22:42:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:46,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:46,242 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 22:42:46,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-22 22:42:46,242 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:46,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1065045737, now seen corresponding path program 1 times [2023-11-22 22:42:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:46,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068662143] [2023-11-22 22:42:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,849 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 22:42:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068662143] [2023-11-22 22:42:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068662143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:48,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:42:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694370426] [2023-11-22 22:42:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:42:48,852 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 22:42:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:49,838 INFO L93 Difference]: Finished difference Result 4424 states and 6973 transitions. [2023-11-22 22:42:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:49,839 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 22:42:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:49,841 INFO L225 Difference]: With dead ends: 4424 [2023-11-22 22:42:49,842 INFO L226 Difference]: Without dead ends: 3227 [2023-11-22 22:42:49,843 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 22:42:49,843 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1618 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:49,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 2638 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 22:42:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2023-11-22 22:42:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2717. [2023-11-22 22:42:50,029 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 22:42:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 4272 transitions. [2023-11-22 22:42:50,032 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 4272 transitions. Word has length 695 [2023-11-22 22:42:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 4272 transitions. [2023-11-22 22:42:50,033 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 22:42:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 4272 transitions. [2023-11-22 22:42:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-22 22:42:50,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:50,038 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 22:42:50,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-22 22:42:50,039 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:50,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1243339303, now seen corresponding path program 1 times [2023-11-22 22:42:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:50,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380148710] [2023-11-22 22:42:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:50,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2023-11-22 22:42:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2023-11-22 22:42:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2023-11-22 22:42:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2023-11-22 22:42:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2023-11-22 22:42:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:53,031 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 22:42:53,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:53,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380148710] [2023-11-22 22:42:53,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380148710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:53,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:53,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:42:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122798570] [2023-11-22 22:42:53,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:42:53,034 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 22:42:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:53,609 INFO L93 Difference]: Finished difference Result 5677 states and 8937 transitions. [2023-11-22 22:42:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:42:53,610 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 22:42:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:53,617 INFO L225 Difference]: With dead ends: 5677 [2023-11-22 22:42:53,617 INFO L226 Difference]: Without dead ends: 4730 [2023-11-22 22:42:53,620 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 22:42:53,620 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 22:42:53,620 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 22:42:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2023-11-22 22:42:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 3384. [2023-11-22 22:42:53,855 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 22:42:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 5339 transitions. [2023-11-22 22:42:53,860 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 5339 transitions. Word has length 695 [2023-11-22 22:42:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:53,860 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 5339 transitions. [2023-11-22 22:42:53,860 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 22:42:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 5339 transitions. [2023-11-22 22:42:53,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-22 22:42:53,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:53,868 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 22:42:53,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-22 22:42:53,868 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:53,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1955067939, now seen corresponding path program 1 times [2023-11-22 22:42:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:53,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551823732] [2023-11-22 22:42:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:53,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:42:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:42:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:42:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:42:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:42:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-11-22 22:42:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-11-22 22:42:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2023-11-22 22:42:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-11-22 22:42:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2023-11-22 22:42:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,175 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 22:42:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551823732] [2023-11-22 22:42:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551823732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:56,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:56,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:42:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002644652] [2023-11-22 22:42:56,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:42:56,177 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 22:42:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:57,204 INFO L93 Difference]: Finished difference Result 6072 states and 9566 transitions. [2023-11-22 22:42:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:57,204 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 22:42:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:57,209 INFO L225 Difference]: With dead ends: 6072 [2023-11-22 22:42:57,209 INFO L226 Difference]: Without dead ends: 4724 [2023-11-22 22:42:57,211 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 22:42:57,211 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:57,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 3943 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 22:42:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2023-11-22 22:42:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 3536. [2023-11-22 22:42:57,433 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 22:42:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5570 transitions. [2023-11-22 22:42:57,436 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5570 transitions. Word has length 696 [2023-11-22 22:42:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:57,437 INFO L495 AbstractCegarLoop]: Abstraction has 3536 states and 5570 transitions. [2023-11-22 22:42:57,437 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 22:42:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5570 transitions. [2023-11-22 22:42:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-22 22:42:57,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:57,443 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 22:42:57,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-22 22:42:57,443 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:57,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2140354909, now seen corresponding path program 1 times [2023-11-22 22:42:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:57,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542635382] [2023-11-22 22:42:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:57,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:43:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:43:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:43:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:43:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:43:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 22:43:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:43:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 22:43:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 22:43:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:00,345 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 22:43:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542635382] [2023-11-22 22:43:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542635382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:43:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883438025] [2023-11-22 22:43:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:43:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:43:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:43:00,348 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 22:43:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:01,359 INFO L93 Difference]: Finished difference Result 6224 states and 9796 transitions. [2023-11-22 22:43:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:01,360 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 22:43:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:01,367 INFO L225 Difference]: With dead ends: 6224 [2023-11-22 22:43:01,367 INFO L226 Difference]: Without dead ends: 4724 [2023-11-22 22:43:01,371 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 22:43:01,371 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 22:43:01,371 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 22:43:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2023-11-22 22:43:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 3537. [2023-11-22 22:43:01,622 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 22:43:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5571 transitions. [2023-11-22 22:43:01,626 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5571 transitions. Word has length 697 [2023-11-22 22:43:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:01,627 INFO L495 AbstractCegarLoop]: Abstraction has 3537 states and 5571 transitions. [2023-11-22 22:43:01,627 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 22:43:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5571 transitions. [2023-11-22 22:43:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-22 22:43:01,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:01,634 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 22:43:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-22 22:43:01,634 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1456394203, now seen corresponding path program 1 times [2023-11-22 22:43:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272180671] [2023-11-22 22:43:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:43:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:43:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:43:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:43:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:43:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 22:43:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:43:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 22:43:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 22:43:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:04,088 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 22:43:04,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:04,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272180671] [2023-11-22 22:43:04,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272180671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:04,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:04,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:04,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609222425] [2023-11-22 22:43:04,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:04,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:04,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:04,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:04,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:04,091 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 22:43:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:05,594 INFO L93 Difference]: Finished difference Result 6807 states and 10684 transitions. [2023-11-22 22:43:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:05,595 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 22:43:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:05,602 INFO L225 Difference]: With dead ends: 6807 [2023-11-22 22:43:05,602 INFO L226 Difference]: Without dead ends: 5306 [2023-11-22 22:43:05,605 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 22:43:05,606 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2155 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:05,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2155 Valid, 5199 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 22:43:05,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2023-11-22 22:43:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4094. [2023-11-22 22:43:05,969 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 22:43:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 6428 transitions. [2023-11-22 22:43:05,972 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 6428 transitions. Word has length 697 [2023-11-22 22:43:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:05,973 INFO L495 AbstractCegarLoop]: Abstraction has 4094 states and 6428 transitions. [2023-11-22 22:43:05,973 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 22:43:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 6428 transitions. [2023-11-22 22:43:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-22 22:43:05,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:05,979 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 22:43:05,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-22 22:43:05,979 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:05,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1722471341, now seen corresponding path program 1 times [2023-11-22 22:43:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673939310] [2023-11-22 22:43:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:05,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:43:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:43:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:43:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:43:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:43:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 22:43:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:43:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 22:43:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 22:43:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:08,924 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 22:43:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:08,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673939310] [2023-11-22 22:43:08,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673939310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:08,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911700391] [2023-11-22 22:43:08,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:08,927 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 22:43:10,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:10,375 INFO L93 Difference]: Finished difference Result 7364 states and 11537 transitions. [2023-11-22 22:43:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:10,375 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 22:43:10,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:10,382 INFO L225 Difference]: With dead ends: 7364 [2023-11-22 22:43:10,383 INFO L226 Difference]: Without dead ends: 5306 [2023-11-22 22:43:10,388 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 22:43:10,388 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 2094 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:10,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 5212 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 22:43:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2023-11-22 22:43:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 4098. [2023-11-22 22:43:10,754 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 22:43:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6432 transitions. [2023-11-22 22:43:10,758 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6432 transitions. Word has length 698 [2023-11-22 22:43:10,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:10,758 INFO L495 AbstractCegarLoop]: Abstraction has 4098 states and 6432 transitions. [2023-11-22 22:43:10,758 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 22:43:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6432 transitions. [2023-11-22 22:43:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-22 22:43:10,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:10,765 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 22:43:10,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-22 22:43:10,765 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:10,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash 665740139, now seen corresponding path program 1 times [2023-11-22 22:43:10,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:10,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784952352] [2023-11-22 22:43:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 22:43:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 22:43:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 22:43:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-22 22:43:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2023-11-22 22:43:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2023-11-22 22:43:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-11-22 22:43:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-11-22 22:43:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2023-11-22 22:43:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:13,077 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 22:43:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:13,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784952352] [2023-11-22 22:43:13,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784952352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:13,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673908587] [2023-11-22 22:43:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:13,079 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 22:43:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:13,930 INFO L93 Difference]: Finished difference Result 7802 states and 12256 transitions. [2023-11-22 22:43:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:13,931 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 22:43:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:13,935 INFO L225 Difference]: With dead ends: 7802 [2023-11-22 22:43:13,935 INFO L226 Difference]: Without dead ends: 4158 [2023-11-22 22:43:13,939 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 22:43:13,940 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:13,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 2126 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 22:43:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2023-11-22 22:43:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4128. [2023-11-22 22:43:14,291 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 22:43:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 6447 transitions. [2023-11-22 22:43:14,295 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 6447 transitions. Word has length 698 [2023-11-22 22:43:14,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:14,295 INFO L495 AbstractCegarLoop]: Abstraction has 4128 states and 6447 transitions. [2023-11-22 22:43:14,295 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 22:43:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 6447 transitions. [2023-11-22 22:43:14,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-22 22:43:14,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:14,301 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 22:43:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-22 22:43:14,301 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1577247095, now seen corresponding path program 1 times [2023-11-22 22:43:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050604174] [2023-11-22 22:43:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 22:43:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 22:43:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 22:43:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 22:43:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 22:43:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-22 22:43:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2023-11-22 22:43:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-22 22:43:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-11-22 22:43:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:16,940 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 22:43:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050604174] [2023-11-22 22:43:16,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050604174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:16,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:16,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 22:43:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724365247] [2023-11-22 22:43:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:16,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:43:16,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:43:16,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:43:16,942 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 22:43:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:17,986 INFO L93 Difference]: Finished difference Result 9135 states and 14326 transitions. [2023-11-22 22:43:17,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:17,987 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 22:43:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:17,992 INFO L225 Difference]: With dead ends: 9135 [2023-11-22 22:43:17,992 INFO L226 Difference]: Without dead ends: 5390 [2023-11-22 22:43:17,995 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 22:43:17,995 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 22:43:17,995 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 22:43:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2023-11-22 22:43:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5099. [2023-11-22 22:43:18,442 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 22:43:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 7986 transitions. [2023-11-22 22:43:18,446 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 7986 transitions. Word has length 700 [2023-11-22 22:43:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:18,447 INFO L495 AbstractCegarLoop]: Abstraction has 5099 states and 7986 transitions. [2023-11-22 22:43:18,447 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 22:43:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 7986 transitions. [2023-11-22 22:43:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2023-11-22 22:43:18,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:18,454 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 22:43:18,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-22 22:43:18,455 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:18,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 660050119, now seen corresponding path program 1 times [2023-11-22 22:43:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482713255] [2023-11-22 22:43:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:18,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 22:43:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-22 22:43:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-22 22:43:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 22:43:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 22:43:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2023-11-22 22:43:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2023-11-22 22:43:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2023-11-22 22:43:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2023-11-22 22:43:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2023-11-22 22:43:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-11-22 22:43:22,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482713255] [2023-11-22 22:43:22,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482713255] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:22,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153911235] [2023-11-22 22:43:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:22,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:22,033 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 22:43:22,034 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 22:43:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:22,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 3628 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-22 22:43:22,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 188 proven. 3 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2023-11-22 22:43:24,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15