./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/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_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/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 32bit --witnessprinter.graph.data.programhash bb431c15a53fac0c4e22be07227ce83ff2546829e87bec0102c153438eba00d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:29,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:29,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:16:29,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:29,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:29,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:29,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:29,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:29,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:29,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:29,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:29,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:29,562 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:29,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:29,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:29,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:29,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:29,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:29,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:29,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:29,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:29,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:29,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:29,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:29,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:29,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:29,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:29,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:29,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:29,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:29,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:29,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:29,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:29,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:29,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:29,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:29,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:29,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:29,576 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:29,577 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_b0ec6283-7835-474d-8f70-204b9f38bbd2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb431c15a53fac0c4e22be07227ce83ff2546829e87bec0102c153438eba00d8 [2023-11-12 02:16:29,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:29,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:29,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:29,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:29,942 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:29,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2023-11-12 02:16:33,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:33,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:33,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2023-11-12 02:16:33,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/data/99b7f3f6b/a456e90d222545a7a48ea44562771f39/FLAGf1799adbd [2023-11-12 02:16:33,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/data/99b7f3f6b/a456e90d222545a7a48ea44562771f39 [2023-11-12 02:16:33,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:33,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:33,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:33,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:33,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:33,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347cc203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33, skipping insertion in model container [2023-11-12 02:16:33,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:33,668 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_b0ec6283-7835-474d-8f70-204b9f38bbd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2023-11-12 02:16:33,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:33,732 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:33,744 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_b0ec6283-7835-474d-8f70-204b9f38bbd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2023-11-12 02:16:33,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:33,813 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:33,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33 WrapperNode [2023-11-12 02:16:33,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:33,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:33,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:33,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:33,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,885 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 279 [2023-11-12 02:16:33,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:33,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:33,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:33,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:33,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:33,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:33,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:33,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:33,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (1/1) ... [2023-11-12 02:16:33,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:34,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:34,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:34,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:34,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:16:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:16:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:16:34,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:16:34,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:16:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:34,171 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:34,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:34,625 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:34,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:34,633 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:16:34,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:34 BoogieIcfgContainer [2023-11-12 02:16:34,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:34,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:34,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:34,643 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:34,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:33" (1/3) ... [2023-11-12 02:16:34,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6115c47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:34, skipping insertion in model container [2023-11-12 02:16:34,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:33" (2/3) ... [2023-11-12 02:16:34,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6115c47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:34, skipping insertion in model container [2023-11-12 02:16:34,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:34" (3/3) ... [2023-11-12 02:16:34,646 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-62.i [2023-11-12 02:16:34,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:34,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:16:34,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:34,741 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;@1a0f66c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:34,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:16:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:16:34,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:34,760 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:34,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:34,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash -256564704, now seen corresponding path program 1 times [2023-11-12 02:16:34,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:34,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191975305] [2023-11-12 02:16:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191975305] [2023-11-12 02:16:35,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191975305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:35,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:35,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:16:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32718419] [2023-11-12 02:16:35,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:35,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:16:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:16:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:16:35,358 INFO L87 Difference]: Start difference. First operand has 73 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:35,408 INFO L93 Difference]: Finished difference Result 139 states and 210 transitions. [2023-11-12 02:16:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:16:35,410 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-12 02:16:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:35,419 INFO L225 Difference]: With dead ends: 139 [2023-11-12 02:16:35,419 INFO L226 Difference]: Without dead ends: 69 [2023-11-12 02:16:35,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:16:35,430 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:35,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-12 02:16:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-12 02:16:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2023-11-12 02:16:35,495 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 73 [2023-11-12 02:16:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:35,497 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2023-11-12 02:16:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2023-11-12 02:16:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:16:35,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:35,508 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:35,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:16:35,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:35,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1770871312, now seen corresponding path program 1 times [2023-11-12 02:16:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:35,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036120049] [2023-11-12 02:16:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:35,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036120049] [2023-11-12 02:16:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036120049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736036816] [2023-11-12 02:16:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:16:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:16:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:16:35,941 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:36,014 INFO L93 Difference]: Finished difference Result 143 states and 202 transitions. [2023-11-12 02:16:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:36,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2023-11-12 02:16:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:36,017 INFO L225 Difference]: With dead ends: 143 [2023-11-12 02:16:36,017 INFO L226 Difference]: Without dead ends: 77 [2023-11-12 02:16:36,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 02:16:36,020 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 12 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:36,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 275 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-12 02:16:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2023-11-12 02:16:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2023-11-12 02:16:36,033 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 73 [2023-11-12 02:16:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:36,035 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2023-11-12 02:16:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2023-11-12 02:16:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:16:36,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:36,038 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:16:36,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:36,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -749088622, now seen corresponding path program 1 times [2023-11-12 02:16:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:36,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590761975] [2023-11-12 02:16:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:36,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590761975] [2023-11-12 02:16:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590761975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:36,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:36,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:36,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759441459] [2023-11-12 02:16:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:36,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:16:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:16:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:16:36,211 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:36,267 INFO L93 Difference]: Finished difference Result 143 states and 200 transitions. [2023-11-12 02:16:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2023-11-12 02:16:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:36,273 INFO L225 Difference]: With dead ends: 143 [2023-11-12 02:16:36,273 INFO L226 Difference]: Without dead ends: 75 [2023-11-12 02:16:36,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 02:16:36,276 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 3 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:36,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 275 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-12 02:16:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-11-12 02:16:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 63 states have internal predecessors, (85), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2023-11-12 02:16:36,297 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 73 [2023-11-12 02:16:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:36,299 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2023-11-12 02:16:36,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2023-11-12 02:16:36,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:16:36,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:36,303 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:16:36,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:36,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash -747241580, now seen corresponding path program 1 times [2023-11-12 02:16:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:36,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769606167] [2023-11-12 02:16:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:36,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:36,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:36,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769606167] [2023-11-12 02:16:36,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769606167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:36,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:36,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:16:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574072284] [2023-11-12 02:16:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:16:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:16:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:16:36,902 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:37,103 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2023-11-12 02:16:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:16:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2023-11-12 02:16:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:37,106 INFO L225 Difference]: With dead ends: 170 [2023-11-12 02:16:37,107 INFO L226 Difference]: Without dead ends: 100 [2023-11-12 02:16:37,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 02:16:37,121 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 85 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:37,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 193 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:16:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-12 02:16:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 73. [2023-11-12 02:16:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-12 02:16:37,146 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 73 [2023-11-12 02:16:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:37,148 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-12 02:16:37,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2023-11-12 02:16:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:16:37,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:37,153 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:37,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:16:37,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:37,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -991247921, now seen corresponding path program 1 times [2023-11-12 02:16:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:37,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024216328] [2023-11-12 02:16:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024216328] [2023-11-12 02:16:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024216328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:37,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534906180] [2023-11-12 02:16:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:37,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:16:37,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:37,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:16:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:37,561 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:37,965 INFO L93 Difference]: Finished difference Result 239 states and 330 transitions. [2023-11-12 02:16:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:16:37,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-11-12 02:16:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:37,968 INFO L225 Difference]: With dead ends: 239 [2023-11-12 02:16:37,968 INFO L226 Difference]: Without dead ends: 169 [2023-11-12 02:16:37,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:16:37,971 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 202 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:37,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 486 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:16:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-12 02:16:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 83. [2023-11-12 02:16:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 114 transitions. [2023-11-12 02:16:37,994 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 114 transitions. Word has length 75 [2023-11-12 02:16:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:37,995 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 114 transitions. [2023-11-12 02:16:37,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 114 transitions. [2023-11-12 02:16:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:16:38,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:38,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:38,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:16:38,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:38,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash 184374234, now seen corresponding path program 1 times [2023-11-12 02:16:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:38,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989383954] [2023-11-12 02:16:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:38,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:38,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989383954] [2023-11-12 02:16:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989383954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780678327] [2023-11-12 02:16:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:38,224 INFO L87 Difference]: Start difference. First operand 83 states and 114 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:38,272 INFO L93 Difference]: Finished difference Result 179 states and 247 transitions. [2023-11-12 02:16:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:38,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2023-11-12 02:16:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:38,275 INFO L225 Difference]: With dead ends: 179 [2023-11-12 02:16:38,275 INFO L226 Difference]: Without dead ends: 99 [2023-11-12 02:16:38,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:38,277 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 60 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:38,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 350 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-12 02:16:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2023-11-12 02:16:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 117 transitions. [2023-11-12 02:16:38,287 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 117 transitions. Word has length 77 [2023-11-12 02:16:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:38,288 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 117 transitions. [2023-11-12 02:16:38,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 117 transitions. [2023-11-12 02:16:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:16:38,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:38,290 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:38,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:16:38,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:38,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash 376483499, now seen corresponding path program 1 times [2023-11-12 02:16:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:38,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601497584] [2023-11-12 02:16:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:38,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:39,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601497584] [2023-11-12 02:16:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601497584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:39,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:16:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521437292] [2023-11-12 02:16:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:39,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:39,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:39,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:39,117 INFO L87 Difference]: Start difference. First operand 86 states and 117 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:39,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:39,414 INFO L93 Difference]: Finished difference Result 231 states and 312 transitions. [2023-11-12 02:16:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:16:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2023-11-12 02:16:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:39,417 INFO L225 Difference]: With dead ends: 231 [2023-11-12 02:16:39,417 INFO L226 Difference]: Without dead ends: 148 [2023-11-12 02:16:39,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:39,418 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 102 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:39,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 331 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:16:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-12 02:16:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2023-11-12 02:16:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:39,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2023-11-12 02:16:39,436 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 77 [2023-11-12 02:16:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:39,436 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2023-11-12 02:16:39,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2023-11-12 02:16:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:16:39,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:39,438 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:39,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:16:39,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:39,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash -736098379, now seen corresponding path program 1 times [2023-11-12 02:16:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652341614] [2023-11-12 02:16:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:40,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652341614] [2023-11-12 02:16:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652341614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:40,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:16:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773378980] [2023-11-12 02:16:40,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:40,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:40,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:40,260 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:40,485 INFO L93 Difference]: Finished difference Result 202 states and 271 transitions. [2023-11-12 02:16:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:16:40,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2023-11-12 02:16:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:40,487 INFO L225 Difference]: With dead ends: 202 [2023-11-12 02:16:40,487 INFO L226 Difference]: Without dead ends: 119 [2023-11-12 02:16:40,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 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 02:16:40,489 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 131 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:40,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 320 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:16:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-12 02:16:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2023-11-12 02:16:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 76 states have internal predecessors, (99), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2023-11-12 02:16:40,497 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 77 [2023-11-12 02:16:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:40,498 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2023-11-12 02:16:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2023-11-12 02:16:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:16:40,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:40,499 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:16:40,500 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:40,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:40,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1071179512, now seen corresponding path program 1 times [2023-11-12 02:16:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936924362] [2023-11-12 02:16:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:40,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936924362] [2023-11-12 02:16:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936924362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:16:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123129416] [2023-11-12 02:16:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:40,700 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:40,804 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2023-11-12 02:16:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:16:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2023-11-12 02:16:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:40,807 INFO L225 Difference]: With dead ends: 199 [2023-11-12 02:16:40,807 INFO L226 Difference]: Without dead ends: 116 [2023-11-12 02:16:40,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:16:40,810 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 80 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:40,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 448 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-12 02:16:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2023-11-12 02:16:40,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 77 states have internal predecessors, (100), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2023-11-12 02:16:40,820 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 79 [2023-11-12 02:16:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:40,822 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2023-11-12 02:16:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2023-11-12 02:16:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:16:40,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:40,824 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:16:40,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:40,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash 818027873, now seen corresponding path program 1 times [2023-11-12 02:16:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:40,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389206035] [2023-11-12 02:16:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 02:16:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389206035] [2023-11-12 02:16:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389206035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378176521] [2023-11-12 02:16:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:41,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:41,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:16:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-12 02:16:42,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:16:42,109 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:42,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-12 02:16:42,250 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:42,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 36 [2023-11-12 02:16:42,339 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 89 [2023-11-12 02:16:42,354 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:42,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 124 [2023-11-12 02:16:42,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 72 [2023-11-12 02:16:42,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:42,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 159 treesize of output 106 [2023-11-12 02:16:42,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 118 [2023-11-12 02:16:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-12 02:16:44,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:16:45,214 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:45,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 1 [2023-11-12 02:16:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 02:16:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378176521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:16:45,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:16:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 15] total 29 [2023-11-12 02:16:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126870431] [2023-11-12 02:16:45,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:16:45,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-12 02:16:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:45,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-12 02:16:45,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-11-12 02:16:45,238 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-12 02:16:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:48,733 INFO L93 Difference]: Finished difference Result 298 states and 389 transitions. [2023-11-12 02:16:48,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-12 02:16:48,734 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) Word has length 79 [2023-11-12 02:16:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:48,736 INFO L225 Difference]: With dead ends: 298 [2023-11-12 02:16:48,736 INFO L226 Difference]: Without dead ends: 214 [2023-11-12 02:16:48,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=791, Invalid=3499, Unknown=0, NotChecked=0, Total=4290 [2023-11-12 02:16:48,740 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 565 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:48,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 479 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:16:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-12 02:16:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 91. [2023-11-12 02:16:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2023-11-12 02:16:48,758 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 79 [2023-11-12 02:16:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:48,759 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2023-11-12 02:16:48,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-12 02:16:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2023-11-12 02:16:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:16:48,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:48,761 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:48,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:16:48,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:16:48,968 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:48,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1012296544, now seen corresponding path program 1 times [2023-11-12 02:16:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703789858] [2023-11-12 02:16:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:49,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703789858] [2023-11-12 02:16:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703789858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:49,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123230842] [2023-11-12 02:16:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:49,176 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:49,340 INFO L93 Difference]: Finished difference Result 200 states and 257 transitions. [2023-11-12 02:16:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-11-12 02:16:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:49,343 INFO L225 Difference]: With dead ends: 200 [2023-11-12 02:16:49,343 INFO L226 Difference]: Without dead ends: 112 [2023-11-12 02:16:49,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:49,344 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 90 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:49,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 201 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:16:49,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-12 02:16:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2023-11-12 02:16:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2023-11-12 02:16:49,354 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 80 [2023-11-12 02:16:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:49,354 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2023-11-12 02:16:49,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2023-11-12 02:16:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:16:49,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:49,357 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:49,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:16:49,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash -220227388, now seen corresponding path program 1 times [2023-11-12 02:16:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821924143] [2023-11-12 02:16:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:49,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:49,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821924143] [2023-11-12 02:16:49,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821924143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:49,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:49,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:16:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170068930] [2023-11-12 02:16:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:49,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:16:49,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:16:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:49,996 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:50,245 INFO L93 Difference]: Finished difference Result 273 states and 343 transitions. [2023-11-12 02:16:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:16:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-11-12 02:16:50,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:50,248 INFO L225 Difference]: With dead ends: 273 [2023-11-12 02:16:50,248 INFO L226 Difference]: Without dead ends: 181 [2023-11-12 02:16:50,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:16:50,249 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 117 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:50,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 360 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:16:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-12 02:16:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 104. [2023-11-12 02:16:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 92 states have internal predecessors, (114), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2023-11-12 02:16:50,259 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 80 [2023-11-12 02:16:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:50,259 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2023-11-12 02:16:50,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2023-11-12 02:16:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:16:50,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:50,261 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:50,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:16:50,262 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:50,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1059636290, now seen corresponding path program 1 times [2023-11-12 02:16:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:50,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603487984] [2023-11-12 02:16:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:50,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603487984] [2023-11-12 02:16:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603487984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:51,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-12 02:16:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062454276] [2023-11-12 02:16:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:16:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:16:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:16:51,646 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:52,591 INFO L93 Difference]: Finished difference Result 251 states and 313 transitions. [2023-11-12 02:16:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:16:52,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-11-12 02:16:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:52,594 INFO L225 Difference]: With dead ends: 251 [2023-11-12 02:16:52,594 INFO L226 Difference]: Without dead ends: 150 [2023-11-12 02:16:52,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:16:52,595 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 184 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:52,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 768 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:16:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-12 02:16:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 105. [2023-11-12 02:16:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 93 states have internal predecessors, (115), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:16:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2023-11-12 02:16:52,609 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 80 [2023-11-12 02:16:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:52,610 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2023-11-12 02:16:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:16:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2023-11-12 02:16:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:16:52,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:52,612 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:16:52,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:52,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2025665722, now seen corresponding path program 1 times [2023-11-12 02:16:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82860108] [2023-11-12 02:16:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82860108] [2023-11-12 02:16:54,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82860108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:54,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:54,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-12 02:16:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607329484] [2023-11-12 02:16:54,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:54,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-12 02:16:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-12 02:16:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:16:54,165 INFO L87 Difference]: Start difference. First operand 105 states and 131 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:56,295 INFO L93 Difference]: Finished difference Result 646 states and 800 transitions. [2023-11-12 02:16:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-12 02:16:56,296 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-11-12 02:16:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:56,300 INFO L225 Difference]: With dead ends: 646 [2023-11-12 02:16:56,300 INFO L226 Difference]: Without dead ends: 544 [2023-11-12 02:16:56,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=517, Invalid=2033, Unknown=0, NotChecked=0, Total=2550 [2023-11-12 02:16:56,303 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 879 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:56,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 821 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:16:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-11-12 02:16:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 221. [2023-11-12 02:16:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 198 states have (on average 1.2525252525252526) internal successors, (248), 198 states have internal predecessors, (248), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 02:16:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 280 transitions. [2023-11-12 02:16:56,363 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 280 transitions. Word has length 80 [2023-11-12 02:16:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:56,364 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 280 transitions. [2023-11-12 02:16:56,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 280 transitions. [2023-11-12 02:16:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:16:56,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:56,366 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:56,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:16:56,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:56,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash -745802044, now seen corresponding path program 1 times [2023-11-12 02:16:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:56,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577144521] [2023-11-12 02:16:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:56,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:56,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:56,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577144521] [2023-11-12 02:16:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577144521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:16:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844698285] [2023-11-12 02:16:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:56,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:16:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:16:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:16:56,913 INFO L87 Difference]: Start difference. First operand 221 states and 280 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:57,208 INFO L93 Difference]: Finished difference Result 529 states and 666 transitions. [2023-11-12 02:16:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:16:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-11-12 02:16:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:57,211 INFO L225 Difference]: With dead ends: 529 [2023-11-12 02:16:57,212 INFO L226 Difference]: Without dead ends: 311 [2023-11-12 02:16:57,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:16:57,213 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 84 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:57,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 436 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:16:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-12 02:16:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 221. [2023-11-12 02:16:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 198 states have internal predecessors, (244), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 02:16:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 276 transitions. [2023-11-12 02:16:57,237 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 276 transitions. Word has length 80 [2023-11-12 02:16:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:57,238 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 276 transitions. [2023-11-12 02:16:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:16:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 276 transitions. [2023-11-12 02:16:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 02:16:57,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:57,240 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:57,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:16:57,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:57,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1128585064, now seen corresponding path program 1 times [2023-11-12 02:16:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:57,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873440631] [2023-11-12 02:16:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:16:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:16:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:16:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:16:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:16:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:16:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:16:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 02:16:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873440631] [2023-11-12 02:16:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873440631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745198984] [2023-11-12 02:16:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:58,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:58,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:58,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:16:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:58,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-12 02:16:58,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:16:58,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2023-11-12 02:16:59,073 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:59,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 54 [2023-11-12 02:16:59,344 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:16:59,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 35 [2023-11-12 02:16:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-12 02:16:59,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:16:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:16:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745198984] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:59,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:16:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 12] total 31 [2023-11-12 02:16:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868169118] [2023-11-12 02:16:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:59,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:16:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:16:59,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2023-11-12 02:16:59,851 INFO L87 Difference]: Start difference. First operand 221 states and 276 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:00,534 INFO L93 Difference]: Finished difference Result 529 states and 658 transitions. [2023-11-12 02:17:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:17:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2023-11-12 02:17:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:00,537 INFO L225 Difference]: With dead ends: 529 [2023-11-12 02:17:00,538 INFO L226 Difference]: Without dead ends: 311 [2023-11-12 02:17:00,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 02:17:00,539 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 179 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:00,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 685 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-12 02:17:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 101. [2023-11-12 02:17:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 89 states have internal predecessors, (109), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:17:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-11-12 02:17:00,570 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 81 [2023-11-12 02:17:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:00,570 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-11-12 02:17:00,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-11-12 02:17:00,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-12 02:17:00,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:00,572 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:00,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:17:00,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0ec6283-7835-474d-8f70-204b9f38bbd2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:17:00,779 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:00,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1390319778, now seen corresponding path program 1 times [2023-11-12 02:17:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990543947] [2023-11-12 02:17:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:00,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990543947] [2023-11-12 02:17:00,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990543947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:00,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:00,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828008778] [2023-11-12 02:17:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:00,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:00,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:00,928 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:01,131 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2023-11-12 02:17:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2023-11-12 02:17:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:01,133 INFO L225 Difference]: With dead ends: 278 [2023-11-12 02:17:01,133 INFO L226 Difference]: Without dead ends: 177 [2023-11-12 02:17:01,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:01,135 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 106 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:01,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 325 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:17:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-12 02:17:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 101. [2023-11-12 02:17:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 89 states have internal predecessors, (108), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 02:17:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2023-11-12 02:17:01,148 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 82 [2023-11-12 02:17:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:01,148 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2023-11-12 02:17:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2023-11-12 02:17:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 02:17:01,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:01,150 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:01,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:17:01,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:01,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1196454200, now seen corresponding path program 1 times [2023-11-12 02:17:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:01,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273118955] [2023-11-12 02:17:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273118955] [2023-11-12 02:17:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273118955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:02,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:02,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:17:02,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51438968] [2023-11-12 02:17:02,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:02,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:17:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:17:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:17:02,049 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:17:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:02,858 INFO L93 Difference]: Finished difference Result 306 states and 378 transitions. [2023-11-12 02:17:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-12 02:17:02,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2023-11-12 02:17:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:02,860 INFO L225 Difference]: With dead ends: 306 [2023-11-12 02:17:02,860 INFO L226 Difference]: Without dead ends: 208 [2023-11-12 02:17:02,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:17:02,862 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 238 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:02,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 589 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-12 02:17:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 158. [2023-11-12 02:17:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 141 states have internal predecessors, (167), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 02:17:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2023-11-12 02:17:02,889 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 83 [2023-11-12 02:17:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:02,890 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2023-11-12 02:17:02,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:17:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2023-11-12 02:17:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 02:17:02,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:02,892 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:17:02,893 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1363545628, now seen corresponding path program 1 times [2023-11-12 02:17:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126465339] [2023-11-12 02:17:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126465339] [2023-11-12 02:17:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126465339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3196949] [2023-11-12 02:17:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:03,074 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:03,323 INFO L93 Difference]: Finished difference Result 414 states and 506 transitions. [2023-11-12 02:17:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:03,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2023-11-12 02:17:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:03,331 INFO L225 Difference]: With dead ends: 414 [2023-11-12 02:17:03,332 INFO L226 Difference]: Without dead ends: 259 [2023-11-12 02:17:03,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 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 02:17:03,333 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 147 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:03,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 220 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:17:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-12 02:17:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 168. [2023-11-12 02:17:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 150 states have (on average 1.18) internal successors, (177), 151 states have internal predecessors, (177), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 02:17:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 201 transitions. [2023-11-12 02:17:03,369 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 201 transitions. Word has length 83 [2023-11-12 02:17:03,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:03,370 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 201 transitions. [2023-11-12 02:17:03,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 201 transitions. [2023-11-12 02:17:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-12 02:17:03,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:03,372 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:17:03,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:03,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -608984134, now seen corresponding path program 1 times [2023-11-12 02:17:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:03,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437782117] [2023-11-12 02:17:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437782117] [2023-11-12 02:17:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437782117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:03,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:03,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257049240] [2023-11-12 02:17:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:03,520 INFO L87 Difference]: Start difference. First operand 168 states and 201 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:03,784 INFO L93 Difference]: Finished difference Result 433 states and 522 transitions. [2023-11-12 02:17:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 83 [2023-11-12 02:17:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:03,789 INFO L225 Difference]: With dead ends: 433 [2023-11-12 02:17:03,790 INFO L226 Difference]: Without dead ends: 268 [2023-11-12 02:17:03,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:03,791 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 82 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:03,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 390 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:17:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-12 02:17:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 183. [2023-11-12 02:17:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 165 states have (on average 1.1696969696969697) internal successors, (193), 166 states have internal predecessors, (193), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-12 02:17:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2023-11-12 02:17:03,828 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 83 [2023-11-12 02:17:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:03,828 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2023-11-12 02:17:03,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2023-11-12 02:17:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-12 02:17:03,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:03,830 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:17:03,830 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:03,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1530700993, now seen corresponding path program 1 times [2023-11-12 02:17:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566318107] [2023-11-12 02:17:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566318107] [2023-11-12 02:17:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566318107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:04,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:04,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:04,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919665357] [2023-11-12 02:17:04,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:04,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:04,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:04,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:04,963 INFO L87 Difference]: Start difference. First operand 183 states and 217 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:05,576 INFO L93 Difference]: Finished difference Result 287 states and 351 transitions. [2023-11-12 02:17:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2023-11-12 02:17:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:05,579 INFO L225 Difference]: With dead ends: 287 [2023-11-12 02:17:05,579 INFO L226 Difference]: Without dead ends: 285 [2023-11-12 02:17:05,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:17:05,580 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 107 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:05,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 346 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-12 02:17:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 222. [2023-11-12 02:17:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 192 states have (on average 1.1458333333333333) internal successors, (220), 194 states have internal predecessors, (220), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2023-11-12 02:17:05,626 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 85 [2023-11-12 02:17:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:05,626 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2023-11-12 02:17:05,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2023-11-12 02:17:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-12 02:17:05,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:05,628 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:05,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:17:05,628 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:05,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1528853951, now seen corresponding path program 1 times [2023-11-12 02:17:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:05,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950879982] [2023-11-12 02:17:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950879982] [2023-11-12 02:17:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950879982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628163002] [2023-11-12 02:17:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:05,873 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:06,046 INFO L93 Difference]: Finished difference Result 412 states and 483 transitions. [2023-11-12 02:17:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2023-11-12 02:17:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:06,049 INFO L225 Difference]: With dead ends: 412 [2023-11-12 02:17:06,049 INFO L226 Difference]: Without dead ends: 226 [2023-11-12 02:17:06,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:06,050 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 50 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:06,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 270 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:17:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-12 02:17:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-11-12 02:17:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 195 states have (on average 1.1333333333333333) internal successors, (221), 197 states have internal predecessors, (221), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 261 transitions. [2023-11-12 02:17:06,095 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 261 transitions. Word has length 85 [2023-11-12 02:17:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 261 transitions. [2023-11-12 02:17:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 261 transitions. [2023-11-12 02:17:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-12 02:17:06,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:06,098 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:06,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:17:06,098 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:06,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 246153411, now seen corresponding path program 1 times [2023-11-12 02:17:06,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:06,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10661527] [2023-11-12 02:17:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10661527] [2023-11-12 02:17:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10661527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:17:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743766408] [2023-11-12 02:17:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:17:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:17:07,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:17:07,312 INFO L87 Difference]: Start difference. First operand 226 states and 261 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:17:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:07,931 INFO L93 Difference]: Finished difference Result 567 states and 656 transitions. [2023-11-12 02:17:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:17:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2023-11-12 02:17:07,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:07,934 INFO L225 Difference]: With dead ends: 567 [2023-11-12 02:17:07,935 INFO L226 Difference]: Without dead ends: 377 [2023-11-12 02:17:07,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:17:07,936 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 150 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:07,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 437 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:07,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-12 02:17:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 327. [2023-11-12 02:17:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 296 states have (on average 1.1385135135135136) internal successors, (337), 298 states have internal predecessors, (337), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 377 transitions. [2023-11-12 02:17:07,985 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 377 transitions. Word has length 85 [2023-11-12 02:17:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 377 transitions. [2023-11-12 02:17:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-12 02:17:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 377 transitions. [2023-11-12 02:17:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-12 02:17:07,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:07,987 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 02:17:07,988 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:07,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1094259050, now seen corresponding path program 1 times [2023-11-12 02:17:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371915350] [2023-11-12 02:17:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:08,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:08,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371915350] [2023-11-12 02:17:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371915350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:08,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:08,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353590314] [2023-11-12 02:17:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:08,142 INFO L87 Difference]: Start difference. First operand 327 states and 377 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:08,373 INFO L93 Difference]: Finished difference Result 691 states and 798 transitions. [2023-11-12 02:17:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2023-11-12 02:17:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:08,376 INFO L225 Difference]: With dead ends: 691 [2023-11-12 02:17:08,376 INFO L226 Difference]: Without dead ends: 400 [2023-11-12 02:17:08,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:08,378 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 68 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 309 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:17:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-12 02:17:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 313. [2023-11-12 02:17:08,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 282 states have (on average 1.124113475177305) internal successors, (317), 284 states have internal predecessors, (317), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 357 transitions. [2023-11-12 02:17:08,426 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 357 transitions. Word has length 86 [2023-11-12 02:17:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:08,427 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 357 transitions. [2023-11-12 02:17:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 357 transitions. [2023-11-12 02:17:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 02:17:08,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:08,429 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:08,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 02:17:08,429 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:08,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1327876248, now seen corresponding path program 1 times [2023-11-12 02:17:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:08,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104679253] [2023-11-12 02:17:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104679253] [2023-11-12 02:17:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104679253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:08,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:08,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638097407] [2023-11-12 02:17:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:08,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:08,936 INFO L87 Difference]: Start difference. First operand 313 states and 357 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:09,202 INFO L93 Difference]: Finished difference Result 717 states and 815 transitions. [2023-11-12 02:17:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2023-11-12 02:17:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:09,206 INFO L225 Difference]: With dead ends: 717 [2023-11-12 02:17:09,206 INFO L226 Difference]: Without dead ends: 440 [2023-11-12 02:17:09,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:09,208 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 69 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:09,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 213 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:17:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-12 02:17:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 402. [2023-11-12 02:17:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 371 states have (on average 1.1212938005390836) internal successors, (416), 373 states have internal predecessors, (416), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 456 transitions. [2023-11-12 02:17:09,265 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 456 transitions. Word has length 87 [2023-11-12 02:17:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:09,266 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 456 transitions. [2023-11-12 02:17:09,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 456 transitions. [2023-11-12 02:17:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 02:17:09,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:09,269 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:09,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 02:17:09,270 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:09,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:09,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1621963815, now seen corresponding path program 1 times [2023-11-12 02:17:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962854127] [2023-11-12 02:17:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:09,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962854127] [2023-11-12 02:17:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962854127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:09,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:09,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810946629] [2023-11-12 02:17:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:09,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:17:09,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:17:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:17:09,390 INFO L87 Difference]: Start difference. First operand 402 states and 456 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:09,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:09,524 INFO L93 Difference]: Finished difference Result 678 states and 769 transitions. [2023-11-12 02:17:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:09,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2023-11-12 02:17:09,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:09,527 INFO L225 Difference]: With dead ends: 678 [2023-11-12 02:17:09,527 INFO L226 Difference]: Without dead ends: 312 [2023-11-12 02:17:09,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 02:17:09,528 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 8 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:09,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 193 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:17:09,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-12 02:17:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-12 02:17:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 281 states have (on average 1.1103202846975089) internal successors, (312), 283 states have internal predecessors, (312), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 352 transitions. [2023-11-12 02:17:09,574 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 352 transitions. Word has length 87 [2023-11-12 02:17:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:09,574 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 352 transitions. [2023-11-12 02:17:09,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 352 transitions. [2023-11-12 02:17:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 02:17:09,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:09,576 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:09,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:17:09,577 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 681222406, now seen corresponding path program 1 times [2023-11-12 02:17:09,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:09,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339106629] [2023-11-12 02:17:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339106629] [2023-11-12 02:17:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339106629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:10,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:10,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:17:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145477212] [2023-11-12 02:17:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:17:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:17:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:17:10,836 INFO L87 Difference]: Start difference. First operand 312 states and 352 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:17:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:11,373 INFO L93 Difference]: Finished difference Result 608 states and 686 transitions. [2023-11-12 02:17:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:17:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-12 02:17:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:11,376 INFO L225 Difference]: With dead ends: 608 [2023-11-12 02:17:11,377 INFO L226 Difference]: Without dead ends: 332 [2023-11-12 02:17:11,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:17:11,378 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 62 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:11,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 418 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:17:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-12 02:17:11,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 314. [2023-11-12 02:17:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 283 states have (on average 1.1095406360424027) internal successors, (314), 285 states have internal predecessors, (314), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-12 02:17:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 354 transitions. [2023-11-12 02:17:11,423 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 354 transitions. Word has length 88 [2023-11-12 02:17:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:11,424 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 354 transitions. [2023-11-12 02:17:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:17:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 354 transitions. [2023-11-12 02:17:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:17:11,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:11,426 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:11,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 02:17:11,426 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:11,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1872928364, now seen corresponding path program 1 times [2023-11-12 02:17:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:11,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852891393] [2023-11-12 02:17:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-12 02:17:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:17:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-12 02:17:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:17:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-12 02:17:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:17:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-12 02:17:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-12 02:17:11,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852891393] [2023-11-12 02:17:11,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852891393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:11,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:11,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384029720] [2023-11-12 02:17:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:11,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:11,574 INFO L87 Difference]: Start difference. First operand 314 states and 354 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:11,723 INFO L93 Difference]: Finished difference Result 580 states and 651 transitions. [2023-11-12 02:17:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 90 [2023-11-12 02:17:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:11,724 INFO L225 Difference]: With dead ends: 580 [2023-11-12 02:17:11,724 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 02:17:11,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:11,726 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 35 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:11,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 203 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:17:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 02:17:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 02:17:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 02:17:11,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2023-11-12 02:17:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:11,727 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 02:17:11,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-12 02:17:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 02:17:11,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 02:17:11,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:17:11,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-12 02:17:11,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.