./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl --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 2f2704c4e2c6d7f64d9e04a1e2386cc75b096498be0071ea7fbc37af2938bd44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:33,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:33,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:28:33,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:33,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:33,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:33,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:33,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:33,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:33,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:33,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:33,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:33,798 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:33,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:33,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:33,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:33,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:33,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:33,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:33,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:33,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:33,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:33,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:33,807 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:33,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:33,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:33,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:33,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:33,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:33,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:33,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:33,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:33,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:33,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:33,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:33,813 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:33,813 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f2704c4e2c6d7f64d9e04a1e2386cc75b096498be0071ea7fbc37af2938bd44 [2023-11-12 02:28:34,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:34,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:34,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:34,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:34,136 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:34,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2023-11-12 02:28:37,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:37,706 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:37,708 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2023-11-12 02:28:37,728 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/data/f1e80c02a/f824d734af134bc082084b7237759666/FLAG21a038654 [2023-11-12 02:28:37,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/data/f1e80c02a/f824d734af134bc082084b7237759666 [2023-11-12 02:28:37,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:37,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:37,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:37,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:37,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:37,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:37" (1/1) ... [2023-11-12 02:28:37,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0c4abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:37, skipping insertion in model container [2023-11-12 02:28:37,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:37" (1/1) ... [2023-11-12 02:28:37,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:38,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326] [2023-11-12 02:28:38,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:38,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:38,464 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c[1313,1326] [2023-11-12 02:28:38,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:38,651 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:38,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38 WrapperNode [2023-11-12 02:28:38,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:38,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:38,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:38,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:38,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:38,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,048 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2509 [2023-11-12 02:28:39,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:39,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:39,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:39,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:39,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,210 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:39,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:39,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:39,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:39,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (1/1) ... [2023-11-12 02:28:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:39,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:39,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:39,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcf56a8-2634-4a09-b47f-84f1d98161b1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:28:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:28:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:39,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:39,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:42,299 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:42,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:42,324 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:28:42,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:42 BoogieIcfgContainer [2023-11-12 02:28:42,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:42,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:42,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:42,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:42,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:37" (1/3) ... [2023-11-12 02:28:42,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc36e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:42, skipping insertion in model container [2023-11-12 02:28:42,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:38" (2/3) ... [2023-11-12 02:28:42,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc36e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:42, skipping insertion in model container [2023-11-12 02:28:42,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:42" (3/3) ... [2023-11-12 02:28:42,345 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_intersymbol_analog_estimation_convergence.c [2023-11-12 02:28:42,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:42,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:28:42,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:42,479 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;@2c72237a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:42,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:28:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 617 states, 612 states have (on average 1.6650326797385622) internal successors, (1019), 613 states have internal predecessors, (1019), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-12 02:28:42,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:42,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:42,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:42,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash -314576003, now seen corresponding path program 1 times [2023-11-12 02:28:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173783800] [2023-11-12 02:28:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:28:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:45,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:45,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173783800] [2023-11-12 02:28:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173783800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:45,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795233370] [2023-11-12 02:28:45,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:45,226 INFO L87 Difference]: Start difference. First operand has 617 states, 612 states have (on average 1.6650326797385622) internal successors, (1019), 613 states have internal predecessors, (1019), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:45,386 INFO L93 Difference]: Finished difference Result 1203 states and 2001 transitions. [2023-11-12 02:28:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:45,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 291 [2023-11-12 02:28:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:45,408 INFO L225 Difference]: With dead ends: 1203 [2023-11-12 02:28:45,408 INFO L226 Difference]: Without dead ends: 615 [2023-11-12 02:28:45,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:45,419 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 1 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:45,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3024 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-12 02:28:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2023-11-12 02:28:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 611 states have (on average 1.6530278232405893) internal successors, (1010), 611 states have internal predecessors, (1010), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1014 transitions. [2023-11-12 02:28:45,543 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1014 transitions. Word has length 291 [2023-11-12 02:28:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:45,552 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 1014 transitions. [2023-11-12 02:28:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1014 transitions. [2023-11-12 02:28:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-12 02:28:45,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:45,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:28:45,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:45,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:45,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1160194895, now seen corresponding path program 1 times [2023-11-12 02:28:45,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459438727] [2023-11-12 02:28:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:28:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459438727] [2023-11-12 02:28:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459438727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:47,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:47,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480676039] [2023-11-12 02:28:47,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:28:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:28:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:47,054 INFO L87 Difference]: Start difference. First operand 615 states and 1014 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:47,410 INFO L93 Difference]: Finished difference Result 1768 states and 2919 transitions. [2023-11-12 02:28:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:28:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 292 [2023-11-12 02:28:47,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:47,419 INFO L225 Difference]: With dead ends: 1768 [2023-11-12 02:28:47,419 INFO L226 Difference]: Without dead ends: 615 [2023-11-12 02:28:47,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:28:47,434 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 2565 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2566 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:47,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2566 Valid, 2963 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:28:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-11-12 02:28:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2023-11-12 02:28:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 611 states have (on average 1.65139116202946) internal successors, (1009), 611 states have internal predecessors, (1009), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1013 transitions. [2023-11-12 02:28:47,468 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1013 transitions. Word has length 292 [2023-11-12 02:28:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:47,469 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 1013 transitions. [2023-11-12 02:28:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1013 transitions. [2023-11-12 02:28:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-12 02:28:47,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:47,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:47,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:28:47,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:47,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -81678767, now seen corresponding path program 1 times [2023-11-12 02:28:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89064913] [2023-11-12 02:28:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:48,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:48,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89064913] [2023-11-12 02:28:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89064913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:48,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:48,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949248671] [2023-11-12 02:28:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:48,771 INFO L87 Difference]: Start difference. First operand 615 states and 1013 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:48,858 INFO L93 Difference]: Finished difference Result 1204 states and 1983 transitions. [2023-11-12 02:28:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:48,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 293 [2023-11-12 02:28:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:48,870 INFO L225 Difference]: With dead ends: 1204 [2023-11-12 02:28:48,870 INFO L226 Difference]: Without dead ends: 618 [2023-11-12 02:28:48,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:48,882 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 1 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:48,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3018 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-12 02:28:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 617. [2023-11-12 02:28:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 613 states have (on average 1.6492659053833605) internal successors, (1011), 613 states have internal predecessors, (1011), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1015 transitions. [2023-11-12 02:28:48,915 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1015 transitions. Word has length 293 [2023-11-12 02:28:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:48,916 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1015 transitions. [2023-11-12 02:28:48,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1015 transitions. [2023-11-12 02:28:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-12 02:28:48,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:48,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:28:48,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:48,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1552494711, now seen corresponding path program 1 times [2023-11-12 02:28:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821615797] [2023-11-12 02:28:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:48,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:50,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821615797] [2023-11-12 02:28:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821615797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008437005] [2023-11-12 02:28:50,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:50,134 INFO L87 Difference]: Start difference. First operand 617 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:50,234 INFO L93 Difference]: Finished difference Result 1205 states and 1983 transitions. [2023-11-12 02:28:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 294 [2023-11-12 02:28:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:50,240 INFO L225 Difference]: With dead ends: 1205 [2023-11-12 02:28:50,240 INFO L226 Difference]: Without dead ends: 617 [2023-11-12 02:28:50,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:50,250 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 967 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:50,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 1998 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-12 02:28:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-11-12 02:28:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 613 states have (on average 1.6476345840130506) internal successors, (1010), 613 states have internal predecessors, (1010), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1014 transitions. [2023-11-12 02:28:50,272 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1014 transitions. Word has length 294 [2023-11-12 02:28:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:50,273 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1014 transitions. [2023-11-12 02:28:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1014 transitions. [2023-11-12 02:28:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-12 02:28:50,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:50,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:28:50,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:50,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 280761722, now seen corresponding path program 1 times [2023-11-12 02:28:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829601671] [2023-11-12 02:28:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829601671] [2023-11-12 02:28:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829601671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:51,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763971894] [2023-11-12 02:28:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:51,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:51,536 INFO L87 Difference]: Start difference. First operand 617 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:51,632 INFO L93 Difference]: Finished difference Result 1205 states and 1981 transitions. [2023-11-12 02:28:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:51,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 295 [2023-11-12 02:28:51,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:51,637 INFO L225 Difference]: With dead ends: 1205 [2023-11-12 02:28:51,637 INFO L226 Difference]: Without dead ends: 617 [2023-11-12 02:28:51,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:51,639 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 964 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:51,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1998 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-12 02:28:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-11-12 02:28:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 613 states have (on average 1.6460032626427405) internal successors, (1009), 613 states have internal predecessors, (1009), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:28:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1013 transitions. [2023-11-12 02:28:51,658 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1013 transitions. Word has length 295 [2023-11-12 02:28:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:51,659 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 1013 transitions. [2023-11-12 02:28:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1013 transitions. [2023-11-12 02:28:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-11-12 02:28:51,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:51,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:51,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:28:51,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:51,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:51,665 INFO L85 PathProgramCache]: Analyzing trace with hash -60917192, now seen corresponding path program 1 times [2023-11-12 02:28:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084537673] [2023-11-12 02:28:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084537673] [2023-11-12 02:28:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084537673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:53,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:53,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:28:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216943890] [2023-11-12 02:28:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:28:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:28:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:53,316 INFO L87 Difference]: Start difference. First operand 617 states and 1013 transitions. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:53,682 INFO L93 Difference]: Finished difference Result 1849 states and 3034 transitions. [2023-11-12 02:28:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:28:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 295 [2023-11-12 02:28:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:53,692 INFO L225 Difference]: With dead ends: 1849 [2023-11-12 02:28:53,692 INFO L226 Difference]: Without dead ends: 1261 [2023-11-12 02:28:53,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:28:53,695 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1898 mSDsluCounter, 3062 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:53,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 4112 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:28:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-12 02:28:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 648. [2023-11-12 02:28:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 642 states have (on average 1.6386292834890965) internal successors, (1052), 642 states have internal predecessors, (1052), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:28:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1060 transitions. [2023-11-12 02:28:53,732 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1060 transitions. Word has length 295 [2023-11-12 02:28:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:53,733 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1060 transitions. [2023-11-12 02:28:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1060 transitions. [2023-11-12 02:28:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-12 02:28:53,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:53,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:28:53,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 189885875, now seen corresponding path program 1 times [2023-11-12 02:28:53,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222380984] [2023-11-12 02:28:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:53,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222380984] [2023-11-12 02:28:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222380984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:28:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261029170] [2023-11-12 02:28:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:54,438 INFO L87 Difference]: Start difference. First operand 648 states and 1060 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:54,508 INFO L93 Difference]: Finished difference Result 1330 states and 2170 transitions. [2023-11-12 02:28:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 296 [2023-11-12 02:28:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:54,513 INFO L225 Difference]: With dead ends: 1330 [2023-11-12 02:28:54,514 INFO L226 Difference]: Without dead ends: 711 [2023-11-12 02:28:54,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:28:54,516 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1911 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:54,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 1162 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:28:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-11-12 02:28:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 648. [2023-11-12 02:28:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 642 states have (on average 1.6370716510903427) internal successors, (1051), 642 states have internal predecessors, (1051), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:28:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1059 transitions. [2023-11-12 02:28:54,540 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1059 transitions. Word has length 296 [2023-11-12 02:28:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:54,541 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1059 transitions. [2023-11-12 02:28:54,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1059 transitions. [2023-11-12 02:28:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-12 02:28:54,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:54,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:28:54,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:54,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 690088433, now seen corresponding path program 1 times [2023-11-12 02:28:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:54,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400041290] [2023-11-12 02:28:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:28:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:28:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400041290] [2023-11-12 02:28:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400041290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184620569] [2023-11-12 02:28:56,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:56,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:56,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:56,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:28:56,306 INFO L87 Difference]: Start difference. First operand 648 states and 1059 transitions. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:56,700 INFO L93 Difference]: Finished difference Result 1880 states and 3077 transitions. [2023-11-12 02:28:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:28:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 296 [2023-11-12 02:28:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:56,709 INFO L225 Difference]: With dead ends: 1880 [2023-11-12 02:28:56,709 INFO L226 Difference]: Without dead ends: 1261 [2023-11-12 02:28:56,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:28:56,714 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 1894 mSDsluCounter, 4007 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:56,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 5027 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:28:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-12 02:28:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 684. [2023-11-12 02:28:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 678 states have (on average 1.635693215339233) internal successors, (1109), 678 states have internal predecessors, (1109), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:28:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1117 transitions. [2023-11-12 02:28:56,747 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1117 transitions. Word has length 296 [2023-11-12 02:28:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:56,747 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1117 transitions. [2023-11-12 02:28:56,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1117 transitions. [2023-11-12 02:28:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-11-12 02:28:56,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:56,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:56,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:28:56,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:56,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1517097992, now seen corresponding path program 1 times [2023-11-12 02:28:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493855142] [2023-11-12 02:28:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:28:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:28:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:28:59,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:59,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493855142] [2023-11-12 02:28:59,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493855142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:59,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:28:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67622299] [2023-11-12 02:28:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:28:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:28:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:28:59,344 INFO L87 Difference]: Start difference. First operand 684 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:59,803 INFO L93 Difference]: Finished difference Result 1402 states and 2284 transitions. [2023-11-12 02:28:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:28:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 296 [2023-11-12 02:28:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:59,808 INFO L225 Difference]: With dead ends: 1402 [2023-11-12 02:28:59,809 INFO L226 Difference]: Without dead ends: 747 [2023-11-12 02:28:59,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:28:59,811 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 2836 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:59,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 1963 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:28:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-12 02:28:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 684. [2023-11-12 02:28:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 678 states have (on average 1.6342182890855457) internal successors, (1108), 678 states have internal predecessors, (1108), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:28:59,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1116 transitions. [2023-11-12 02:28:59,840 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1116 transitions. Word has length 296 [2023-11-12 02:28:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:59,840 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1116 transitions. [2023-11-12 02:28:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:28:59,841 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1116 transitions. [2023-11-12 02:28:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-12 02:28:59,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:59,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:28:59,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:28:59,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2041391534, now seen corresponding path program 1 times [2023-11-12 02:28:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:59,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694144911] [2023-11-12 02:28:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:29:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:29:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:02,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:02,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694144911] [2023-11-12 02:29:02,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694144911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:02,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:02,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:29:02,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171091244] [2023-11-12 02:29:02,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:02,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:29:02,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:02,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:29:02,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:29:02,118 INFO L87 Difference]: Start difference. First operand 684 states and 1116 transitions. Second operand has 9 states, 9 states have (on average 32.22222222222222) internal successors, (290), 9 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:02,785 INFO L93 Difference]: Finished difference Result 1920 states and 3138 transitions. [2023-11-12 02:29:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:29:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 32.22222222222222) internal successors, (290), 9 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 297 [2023-11-12 02:29:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:02,796 INFO L225 Difference]: With dead ends: 1920 [2023-11-12 02:29:02,796 INFO L226 Difference]: Without dead ends: 1265 [2023-11-12 02:29:02,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:29:02,800 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 3819 mSDsluCounter, 5055 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 6065 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:02,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 6065 Invalid, 302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-11-12 02:29:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 687. [2023-11-12 02:29:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 681 states have (on average 1.6328928046989721) internal successors, (1112), 681 states have internal predecessors, (1112), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:29:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1120 transitions. [2023-11-12 02:29:02,841 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1120 transitions. Word has length 297 [2023-11-12 02:29:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1120 transitions. [2023-11-12 02:29:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.22222222222222) internal successors, (290), 9 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1120 transitions. [2023-11-12 02:29:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-12 02:29:02,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:02,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:02,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:29:02,872 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:02,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -854414192, now seen corresponding path program 1 times [2023-11-12 02:29:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495025009] [2023-11-12 02:29:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:29:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:29:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495025009] [2023-11-12 02:29:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495025009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:03,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:03,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608863616] [2023-11-12 02:29:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:03,978 INFO L87 Difference]: Start difference. First operand 687 states and 1120 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:04,102 INFO L93 Difference]: Finished difference Result 2003 states and 3267 transitions. [2023-11-12 02:29:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 297 [2023-11-12 02:29:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:04,111 INFO L225 Difference]: With dead ends: 2003 [2023-11-12 02:29:04,111 INFO L226 Difference]: Without dead ends: 1345 [2023-11-12 02:29:04,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:04,113 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 950 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:04,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 3220 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:29:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2023-11-12 02:29:04,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 693. [2023-11-12 02:29:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 687 states have (on average 1.6288209606986899) internal successors, (1119), 687 states have internal predecessors, (1119), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:29:04,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1127 transitions. [2023-11-12 02:29:04,148 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1127 transitions. Word has length 297 [2023-11-12 02:29:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:04,148 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1127 transitions. [2023-11-12 02:29:04,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1127 transitions. [2023-11-12 02:29:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-12 02:29:04,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:04,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:04,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:29:04,154 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:04,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1931048415, now seen corresponding path program 1 times [2023-11-12 02:29:04,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:04,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440415000] [2023-11-12 02:29:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:04,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:29:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:29:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440415000] [2023-11-12 02:29:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440415000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:06,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:06,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:29:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391357205] [2023-11-12 02:29:06,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:29:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:06,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:29:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:29:06,139 INFO L87 Difference]: Start difference. First operand 693 states and 1127 transitions. Second operand has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:06,725 INFO L93 Difference]: Finished difference Result 1420 states and 2304 transitions. [2023-11-12 02:29:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:29:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 297 [2023-11-12 02:29:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:06,732 INFO L225 Difference]: With dead ends: 1420 [2023-11-12 02:29:06,732 INFO L226 Difference]: Without dead ends: 756 [2023-11-12 02:29:06,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:29:06,735 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1903 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 2082 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-12 02:29:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 693. [2023-11-12 02:29:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 687 states have (on average 1.6259097525473072) internal successors, (1117), 687 states have internal predecessors, (1117), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:29:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1125 transitions. [2023-11-12 02:29:06,778 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1125 transitions. Word has length 297 [2023-11-12 02:29:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:06,779 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1125 transitions. [2023-11-12 02:29:06,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1125 transitions. [2023-11-12 02:29:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-12 02:29:06,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:06,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:29:06,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1191654871, now seen corresponding path program 1 times [2023-11-12 02:29:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240834211] [2023-11-12 02:29:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:29:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:29:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:08,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240834211] [2023-11-12 02:29:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240834211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:29:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675485739] [2023-11-12 02:29:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:08,017 INFO L87 Difference]: Start difference. First operand 693 states and 1125 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:08,305 INFO L93 Difference]: Finished difference Result 1933 states and 3148 transitions. [2023-11-12 02:29:08,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:08,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 298 [2023-11-12 02:29:08,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:08,313 INFO L225 Difference]: With dead ends: 1933 [2023-11-12 02:29:08,313 INFO L226 Difference]: Without dead ends: 1269 [2023-11-12 02:29:08,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:29:08,316 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 2804 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:08,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2806 Valid, 4114 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:29:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-11-12 02:29:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 698. [2023-11-12 02:29:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 692 states have (on average 1.6242774566473988) internal successors, (1124), 692 states have internal predecessors, (1124), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:29:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1132 transitions. [2023-11-12 02:29:08,349 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1132 transitions. Word has length 298 [2023-11-12 02:29:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:08,350 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1132 transitions. [2023-11-12 02:29:08,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1132 transitions. [2023-11-12 02:29:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-12 02:29:08,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:08,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:08,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:29:08,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:08,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1692255198, now seen corresponding path program 1 times [2023-11-12 02:29:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594891560] [2023-11-12 02:29:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:29:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:29:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:10,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:10,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594891560] [2023-11-12 02:29:10,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594891560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:10,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:10,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:29:10,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103990930] [2023-11-12 02:29:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:10,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:29:10,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:29:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:10,461 INFO L87 Difference]: Start difference. First operand 698 states and 1132 transitions. Second operand has 11 states, 11 states have (on average 26.454545454545453) internal successors, (291), 11 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:29:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:12,372 INFO L93 Difference]: Finished difference Result 2103 states and 3405 transitions. [2023-11-12 02:29:12,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:29:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.454545454545453) internal successors, (291), 11 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 298 [2023-11-12 02:29:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:12,383 INFO L225 Difference]: With dead ends: 2103 [2023-11-12 02:29:12,383 INFO L226 Difference]: Without dead ends: 1434 [2023-11-12 02:29:12,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:29:12,386 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 3821 mSDsluCounter, 10067 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3822 SdHoareTripleChecker+Valid, 11881 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:12,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3822 Valid, 11881 Invalid, 1157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:29:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2023-11-12 02:29:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 757. [2023-11-12 02:29:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 750 states have (on average 1.616) internal successors, (1212), 750 states have internal predecessors, (1212), 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) [2023-11-12 02:29:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1222 transitions. [2023-11-12 02:29:12,439 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1222 transitions. Word has length 298 [2023-11-12 02:29:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:12,440 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1222 transitions. [2023-11-12 02:29:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.454545454545453) internal successors, (291), 11 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-12 02:29:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1222 transitions. [2023-11-12 02:29:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-11-12 02:29:12,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:12,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:29:12,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:12,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 140127012, now seen corresponding path program 1 times [2023-11-12 02:29:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650502468] [2023-11-12 02:29:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-12 02:29:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:29:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650502468] [2023-11-12 02:29:14,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650502468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:14,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:14,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:29:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313470334] [2023-11-12 02:29:14,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:14,351 INFO L87 Difference]: Start difference. First operand 757 states and 1222 transitions. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:14,777 INFO L93 Difference]: Finished difference Result 2264 states and 3654 transitions. [2023-11-12 02:29:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:29:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 298 [2023-11-12 02:29:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:14,787 INFO L225 Difference]: With dead ends: 2264 [2023-11-12 02:29:14,788 INFO L226 Difference]: Without dead ends: 1536 [2023-11-12 02:29:14,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:29:14,791 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 7245 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7247 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:14,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7247 Valid, 2538 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:29:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-11-12 02:29:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 790. [2023-11-12 02:29:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 783 states have (on average 1.6143039591315453) internal successors, (1264), 783 states have internal predecessors, (1264), 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) [2023-11-12 02:29:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1274 transitions. [2023-11-12 02:29:14,832 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1274 transitions. Word has length 298 [2023-11-12 02:29:14,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:14,833 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1274 transitions. [2023-11-12 02:29:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1274 transitions. [2023-11-12 02:29:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-12 02:29:14,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:14,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:14,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:29:14,840 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:14,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash 804509774, now seen corresponding path program 1 times [2023-11-12 02:29:14,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:14,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604707113] [2023-11-12 02:29:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:29:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:29:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:29:16,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604707113] [2023-11-12 02:29:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604707113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:29:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685791118] [2023-11-12 02:29:16,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:29:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:29:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:29:16,554 INFO L87 Difference]: Start difference. First operand 790 states and 1274 transitions. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:17,135 INFO L93 Difference]: Finished difference Result 2182 states and 3529 transitions. [2023-11-12 02:29:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:29:17,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 299 [2023-11-12 02:29:17,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:17,144 INFO L225 Difference]: With dead ends: 2182 [2023-11-12 02:29:17,144 INFO L226 Difference]: Without dead ends: 1421 [2023-11-12 02:29:17,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:29:17,146 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 2908 mSDsluCounter, 6006 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:17,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2912 Valid, 7039 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:29:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-11-12 02:29:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 833. [2023-11-12 02:29:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 826 states have (on average 1.6089588377723971) internal successors, (1329), 826 states have internal predecessors, (1329), 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) [2023-11-12 02:29:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1339 transitions. [2023-11-12 02:29:17,193 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1339 transitions. Word has length 299 [2023-11-12 02:29:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:17,193 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1339 transitions. [2023-11-12 02:29:17,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:29:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1339 transitions. [2023-11-12 02:29:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-12 02:29:17,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:17,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:29:17,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash -165380724, now seen corresponding path program 1 times [2023-11-12 02:29:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71761387] [2023-11-12 02:29:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms