./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/prefixsum_iter.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/prefixsum_iter.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:32:31,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:32:31,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:32:31,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:32:31,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:32:31,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:32:31,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:32:31,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:32:31,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:32:31,997 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:32:31,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:32:31,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:32:31,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:32:31,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:32:31,999 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:32:31,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:32:32,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:32:32,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:32:32,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:32:32,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:32:32,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:32:32,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:32:32,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:32:32,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:32:32,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:32:32,009 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:32:32,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:32:32,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:32:32,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:32:32,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:32:32,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:32:32,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:32:32,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:32:32,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:32:32,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:32:32,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:32:32,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:32:32,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:32:32,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:32:32,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:32:32,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:32:32,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:32:32,013 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:32:32,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:32:32,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:32:32,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:32:32,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:32:32,326 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:32:32,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-10-15 14:32:33,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:32:33,934 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:32:33,935 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-10-15 14:32:33,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f84bb6524/b537c9a4dc9b4e589327ebdd288df38a/FLAG2fb04edda [2024-10-15 14:32:33,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f84bb6524/b537c9a4dc9b4e589327ebdd288df38a [2024-10-15 14:32:33,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:32:33,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:32:33,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:32:33,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:32:33,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:32:33,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:32:33" (1/1) ... [2024-10-15 14:32:33,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e04af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:33, skipping insertion in model container [2024-10-15 14:32:33,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:32:33" (1/1) ... [2024-10-15 14:32:34,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:32:34,191 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2024-10-15 14:32:34,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:32:34,242 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:32:34,254 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/prefixsum_iter.c[526,539] [2024-10-15 14:32:34,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:32:34,298 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:32:34,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34 WrapperNode [2024-10-15 14:32:34,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:32:34,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:32:34,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:32:34,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:32:34,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,323 INFO L138 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:32:34,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:32:34,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:32:34,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:32:34,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:32:34,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,363 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [14, 2]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 6 writes are split as follows [6, 0]. [2024-10-15 14:32:34,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:32:34,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:32:34,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:32:34,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:32:34,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (1/1) ... [2024-10-15 14:32:34,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:32:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:34,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 14:32:34,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 14:32:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:32:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 14:32:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 14:32:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:32:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:32:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:32:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 14:32:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-10-15 14:32:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-10-15 14:32:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2024-10-15 14:32:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2024-10-15 14:32:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 14:32:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 14:32:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:32:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:32:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 14:32:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2024-10-15 14:32:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2024-10-15 14:32:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2024-10-15 14:32:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2024-10-15 14:32:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:32:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:32:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 14:32:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 14:32:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-10-15 14:32:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-10-15 14:32:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:32:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:32:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-15 14:32:34,640 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:32:34,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:32:34,923 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-10-15 14:32:34,923 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:32:34,966 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:32:34,967 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-15 14:32:34,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:32:34 BoogieIcfgContainer [2024-10-15 14:32:34,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:32:34,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:32:34,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:32:34,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:32:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:32:33" (1/3) ... [2024-10-15 14:32:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2436d057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:32:34, skipping insertion in model container [2024-10-15 14:32:34,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:32:34" (2/3) ... [2024-10-15 14:32:34,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2436d057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:32:34, skipping insertion in model container [2024-10-15 14:32:34,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:32:34" (3/3) ... [2024-10-15 14:32:34,978 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2024-10-15 14:32:34,994 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:32:34,994 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:32:35,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:32:35,059 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@f9fc526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:32:35,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:32:35,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 36 states have internal predecessors, (52), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:32:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-15 14:32:35,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:35,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:35,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:35,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1085934665, now seen corresponding path program 1 times [2024-10-15 14:32:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072059939] [2024-10-15 14:32:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:32:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:32:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:35,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:35,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:35,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072059939] [2024-10-15 14:32:35,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072059939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:35,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:35,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 14:32:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783174096] [2024-10-15 14:32:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 14:32:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 14:32:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 14:32:35,438 INFO L87 Difference]: Start difference. First operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 36 states have internal predecessors, (52), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:35,600 INFO L93 Difference]: Finished difference Result 113 states and 157 transitions. [2024-10-15 14:32:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 14:32:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-10-15 14:32:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:35,612 INFO L225 Difference]: With dead ends: 113 [2024-10-15 14:32:35,612 INFO L226 Difference]: Without dead ends: 56 [2024-10-15 14:32:35,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 14:32:35,621 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:35,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 49 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-15 14:32:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-10-15 14:32:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:32:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-10-15 14:32:35,674 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 49 [2024-10-15 14:32:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:35,675 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-10-15 14:32:35,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:35,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-10-15 14:32:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-15 14:32:35,680 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:35,680 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:35,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:32:35,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:35,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -136188297, now seen corresponding path program 1 times [2024-10-15 14:32:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:35,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789400711] [2024-10-15 14:32:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:35,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:32:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:32:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:36,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789400711] [2024-10-15 14:32:36,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789400711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:36,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:32:36,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-15 14:32:36,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444601104] [2024-10-15 14:32:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:36,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 14:32:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 14:32:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-15 14:32:36,130 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:36,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:36,360 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-10-15 14:32:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 14:32:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-10-15 14:32:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:36,362 INFO L225 Difference]: With dead ends: 72 [2024-10-15 14:32:36,362 INFO L226 Difference]: Without dead ends: 57 [2024-10-15 14:32:36,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-15 14:32:36,364 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:36,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 167 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:32:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-15 14:32:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-10-15 14:32:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:32:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-10-15 14:32:36,374 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 49 [2024-10-15 14:32:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:36,374 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-10-15 14:32:36,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:36,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-10-15 14:32:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-15 14:32:36,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:36,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:36,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:32:36,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:36,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash -963858507, now seen corresponding path program 1 times [2024-10-15 14:32:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350241229] [2024-10-15 14:32:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:32:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:32:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:37,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350241229] [2024-10-15 14:32:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350241229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:37,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525114552] [2024-10-15 14:32:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:37,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:37,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:32:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:37,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-15 14:32:37,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:37,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-15 14:32:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:37,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:37,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 13 [2024-10-15 14:32:37,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 12 [2024-10-15 14:32:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525114552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:37,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:37,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 27 [2024-10-15 14:32:37,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859455986] [2024-10-15 14:32:37,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:37,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 14:32:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 14:32:37,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:32:37,905 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 8 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-15 14:32:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:38,956 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2024-10-15 14:32:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 14:32:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 8 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 50 [2024-10-15 14:32:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:38,959 INFO L225 Difference]: With dead ends: 102 [2024-10-15 14:32:38,959 INFO L226 Difference]: Without dead ends: 100 [2024-10-15 14:32:38,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:32:38,962 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 142 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:38,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 297 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-15 14:32:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-10-15 14:32:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-10-15 14:32:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (18), 12 states have call predecessors, (18), 13 states have call successors, (18) [2024-10-15 14:32:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2024-10-15 14:32:38,994 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 50 [2024-10-15 14:32:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:38,995 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2024-10-15 14:32:38,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 8 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-10-15 14:32:38,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2024-10-15 14:32:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-15 14:32:39,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:39,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:39,022 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:39,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:39,202 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:39,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 384710234, now seen corresponding path program 1 times [2024-10-15 14:32:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:39,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340921473] [2024-10-15 14:32:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:32:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:32:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 14:32:39,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:39,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340921473] [2024-10-15 14:32:39,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340921473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:39,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622965192] [2024-10-15 14:32:39,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:39,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:39,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:39,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:39,507 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:32:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:39,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 14:32:39,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 14:32:39,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:32:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622965192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:39,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:32:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 14 [2024-10-15 14:32:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849260306] [2024-10-15 14:32:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:39,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-15 14:32:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-15 14:32:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:32:39,739 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:39,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:39,883 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2024-10-15 14:32:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:32:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2024-10-15 14:32:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:39,886 INFO L225 Difference]: With dead ends: 123 [2024-10-15 14:32:39,886 INFO L226 Difference]: Without dead ends: 102 [2024-10-15 14:32:39,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:32:39,887 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:39,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 332 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-15 14:32:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2024-10-15 14:32:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 65 states have internal predecessors, (76), 17 states have call successors, (17), 12 states have call predecessors, (17), 13 states have return successors, (23), 13 states have call predecessors, (23), 14 states have call successors, (23) [2024-10-15 14:32:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2024-10-15 14:32:39,909 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 55 [2024-10-15 14:32:39,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:39,910 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2024-10-15 14:32:39,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:39,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2024-10-15 14:32:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-15 14:32:39,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:39,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:39,929 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:32:40,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:40,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:40,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -336622505, now seen corresponding path program 1 times [2024-10-15 14:32:40,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:40,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099877344] [2024-10-15 14:32:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:32:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:32:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:32:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099877344] [2024-10-15 14:32:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099877344] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675144858] [2024-10-15 14:32:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:40,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:40,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:40,262 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:32:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:40,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 14:32:40,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:40,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:32:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675144858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:40,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-10-15 14:32:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584794302] [2024-10-15 14:32:40,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:40,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:32:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:32:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:32:40,501 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-15 14:32:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:40,725 INFO L93 Difference]: Finished difference Result 114 states and 146 transitions. [2024-10-15 14:32:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:32:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 57 [2024-10-15 14:32:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:40,729 INFO L225 Difference]: With dead ends: 114 [2024-10-15 14:32:40,729 INFO L226 Difference]: Without dead ends: 95 [2024-10-15 14:32:40,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:32:40,730 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 29 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:40,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 311 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:32:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-15 14:32:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-15 14:32:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 67 states have internal predecessors, (78), 19 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2024-10-15 14:32:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2024-10-15 14:32:40,753 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 57 [2024-10-15 14:32:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:40,754 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2024-10-15 14:32:40,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-15 14:32:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2024-10-15 14:32:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-15 14:32:40,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:40,756 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:40,774 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:40,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:40,958 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:40,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash -254005355, now seen corresponding path program 2 times [2024-10-15 14:32:40,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:40,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736629981] [2024-10-15 14:32:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:32:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:32:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:32:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 14:32:41,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736629981] [2024-10-15 14:32:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736629981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:41,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806697078] [2024-10-15 14:32:41,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:32:41,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:41,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:41,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:32:41,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:32:41,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:41,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:32:41,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:32:41,361 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:32:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806697078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:32:41,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:32:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2024-10-15 14:32:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595280869] [2024-10-15 14:32:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:32:41,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-15 14:32:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-15 14:32:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:32:41,366 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:32:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:41,472 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2024-10-15 14:32:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:32:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2024-10-15 14:32:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:41,474 INFO L225 Difference]: With dead ends: 114 [2024-10-15 14:32:41,474 INFO L226 Difference]: Without dead ends: 93 [2024-10-15 14:32:41,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:32:41,475 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:41,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 258 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-15 14:32:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-10-15 14:32:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 62 states have internal predecessors, (73), 18 states have call successors, (18), 13 states have call predecessors, (18), 11 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-10-15 14:32:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2024-10-15 14:32:41,500 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 58 [2024-10-15 14:32:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:41,501 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2024-10-15 14:32:41,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:32:41,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2024-10-15 14:32:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-15 14:32:41,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:41,507 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:41,525 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:41,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:41,708 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:41,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -764459887, now seen corresponding path program 1 times [2024-10-15 14:32:41,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:41,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078793775] [2024-10-15 14:32:41,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:41,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:32:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:32:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 14:32:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078793775] [2024-10-15 14:32:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078793775] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142771667] [2024-10-15 14:32:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:41,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:41,926 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:32:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:42,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:32:42,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 14:32:42,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 14:32:42,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142771667] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:42,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2024-10-15 14:32:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336286097] [2024-10-15 14:32:42,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:42,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:32:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:32:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:32:42,404 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:42,719 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2024-10-15 14:32:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 14:32:42,720 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2024-10-15 14:32:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:42,721 INFO L225 Difference]: With dead ends: 118 [2024-10-15 14:32:42,721 INFO L226 Difference]: Without dead ends: 95 [2024-10-15 14:32:42,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:32:42,723 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:42,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 206 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:32:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-15 14:32:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2024-10-15 14:32:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 58 states have internal predecessors, (68), 18 states have call successors, (18), 12 states have call predecessors, (18), 10 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-10-15 14:32:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-10-15 14:32:42,747 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 58 [2024-10-15 14:32:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:42,749 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-10-15 14:32:42,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-15 14:32:42,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-10-15 14:32:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-15 14:32:42,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:42,751 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:42,771 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:32:42,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:32:42,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:42,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1823892196, now seen corresponding path program 1 times [2024-10-15 14:32:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:42,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207367750] [2024-10-15 14:32:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:42,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:32:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:32:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:32:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207367750] [2024-10-15 14:32:43,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207367750] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215491327] [2024-10-15 14:32:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:43,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:43,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:43,150 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:43,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:32:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:43,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:32:43,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:32:43,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:43,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 14:32:43,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215491327] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:43,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:43,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 12 [2024-10-15 14:32:43,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540876749] [2024-10-15 14:32:43,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:43,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 14:32:43,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:43,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 14:32:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:32:43,410 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:32:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:43,597 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2024-10-15 14:32:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:32:43,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2024-10-15 14:32:43,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:43,599 INFO L225 Difference]: With dead ends: 104 [2024-10-15 14:32:43,599 INFO L226 Difference]: Without dead ends: 75 [2024-10-15 14:32:43,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:32:43,600 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:43,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 151 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:32:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-15 14:32:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-10-15 14:32:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 49 states have internal predecessors, (58), 14 states have call successors, (14), 11 states have call predecessors, (14), 9 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-10-15 14:32:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-15 14:32:43,612 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 58 [2024-10-15 14:32:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:43,612 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-15 14:32:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:32:43,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-15 14:32:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-15 14:32:43,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:43,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:43,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 14:32:43,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:43,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:43,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 90056550, now seen corresponding path program 2 times [2024-10-15 14:32:43,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:43,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88030458] [2024-10-15 14:32:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:43,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:32:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:44,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:32:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 14:32:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88030458] [2024-10-15 14:32:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88030458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119547532] [2024-10-15 14:32:45,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:32:45,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:45,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:45,196 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:32:45,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:32:45,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:45,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-15 14:32:45,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:45,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-10-15 14:32:45,869 INFO L349 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2024-10-15 14:32:45,869 INFO L378 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 4 case distinctions, treesize of input 63 treesize of output 50 [2024-10-15 14:32:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 14:32:46,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:46,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:32:46,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 136 treesize of output 144 [2024-10-15 14:32:46,806 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:46,807 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:46,811 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:46,813 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:47,247 INFO L349 Elim1Store]: treesize reduction 384, result has 42.4 percent of original size [2024-10-15 14:32:47,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 237 treesize of output 831 [2024-10-15 14:32:47,355 INFO L378 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 143 treesize of output 120 [2024-10-15 14:32:47,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 6 treesize of output 4 [2024-10-15 14:32:47,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 6 treesize of output 4 [2024-10-15 14:32:48,310 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,313 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,315 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,318 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,326 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,328 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,329 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,330 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,331 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,334 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-15 14:32:48,425 INFO L349 Elim1Store]: treesize reduction 131, result has 27.6 percent of original size [2024-10-15 14:32:48,425 INFO L378 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 8 case distinctions, treesize of input 1272 treesize of output 1043 [2024-10-15 14:32:49,161 INFO L349 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2024-10-15 14:32:49,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 1257 treesize of output 1094 [2024-10-15 14:32:49,366 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:49,367 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-15 14:32:49,370 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-10-15 14:32:49,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 48 treesize of output 44 [2024-10-15 14:32:49,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:32:49,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 170 treesize of output 1 [2024-10-15 14:32:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 14:32:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119547532] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:50,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 17] total 56 [2024-10-15 14:32:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439243362] [2024-10-15 14:32:50,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-15 14:32:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-15 14:32:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2892, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:32:50,237 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 56 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 44 states have internal predecessors, (82), 13 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-15 14:32:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:52,401 INFO L93 Difference]: Finished difference Result 171 states and 232 transitions. [2024-10-15 14:32:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-15 14:32:52,402 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 44 states have internal predecessors, (82), 13 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 59 [2024-10-15 14:32:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:52,404 INFO L225 Difference]: With dead ends: 171 [2024-10-15 14:32:52,404 INFO L226 Difference]: Without dead ends: 169 [2024-10-15 14:32:52,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=447, Invalid=6693, Unknown=0, NotChecked=0, Total=7140 [2024-10-15 14:32:52,406 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 173 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:52,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 457 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-15 14:32:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-10-15 14:32:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 90. [2024-10-15 14:32:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 66 states have internal predecessors, (80), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (20), 12 states have call predecessors, (20), 13 states have call successors, (20) [2024-10-15 14:32:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2024-10-15 14:32:52,433 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 59 [2024-10-15 14:32:52,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:52,434 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2024-10-15 14:32:52,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 44 states have internal predecessors, (82), 13 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-15 14:32:52,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2024-10-15 14:32:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-15 14:32:52,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:52,436 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:52,451 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:52,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:52,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:52,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1661804742, now seen corresponding path program 3 times [2024-10-15 14:32:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:52,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134485783] [2024-10-15 14:32:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:52,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:32:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:32:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-15 14:32:52,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134485783] [2024-10-15 14:32:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134485783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109182970] [2024-10-15 14:32:52,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:32:52,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:52,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:52,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:52,894 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:32:53,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-15 14:32:53,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:53,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-15 14:32:53,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-15 14:32:53,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-15 14:32:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109182970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:53,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-10-15 14:32:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662390788] [2024-10-15 14:32:53,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:53,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-15 14:32:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:53,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-15 14:32:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-10-15 14:32:53,550 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand has 31 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 7 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-10-15 14:32:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:54,429 INFO L93 Difference]: Finished difference Result 183 states and 259 transitions. [2024-10-15 14:32:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-15 14:32:54,430 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 7 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 61 [2024-10-15 14:32:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:54,432 INFO L225 Difference]: With dead ends: 183 [2024-10-15 14:32:54,432 INFO L226 Difference]: Without dead ends: 143 [2024-10-15 14:32:54,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2024-10-15 14:32:54,435 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:54,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 414 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:32:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-15 14:32:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 121. [2024-10-15 14:32:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 92 states have internal predecessors, (110), 22 states have call successors, (22), 11 states have call predecessors, (22), 14 states have return successors, (34), 17 states have call predecessors, (34), 19 states have call successors, (34) [2024-10-15 14:32:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2024-10-15 14:32:54,475 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 61 [2024-10-15 14:32:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:54,475 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2024-10-15 14:32:54,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.103448275862069) internal successors, (90), 30 states have internal predecessors, (90), 7 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-10-15 14:32:54,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2024-10-15 14:32:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-15 14:32:54,477 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:54,477 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:54,490 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:54,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:54,679 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:54,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1323398257, now seen corresponding path program 4 times [2024-10-15 14:32:54,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:54,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374310614] [2024-10-15 14:32:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:32:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:32:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:32:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374310614] [2024-10-15 14:32:54,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374310614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609444506] [2024-10-15 14:32:54,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:32:54,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:54,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:54,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:54,840 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:32:54,937 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:32:54,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:54,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:32:54,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:32:55,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:32:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609444506] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:55,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:55,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-10-15 14:32:55,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600905698] [2024-10-15 14:32:55,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:55,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:32:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:55,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:32:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:32:55,129 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 2 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-15 14:32:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:55,387 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2024-10-15 14:32:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 14:32:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 2 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2024-10-15 14:32:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:55,389 INFO L225 Difference]: With dead ends: 180 [2024-10-15 14:32:55,389 INFO L226 Difference]: Without dead ends: 113 [2024-10-15 14:32:55,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:32:55,390 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:55,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 284 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:32:55,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-15 14:32:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2024-10-15 14:32:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 82 states have internal predecessors, (98), 20 states have call successors, (20), 11 states have call predecessors, (20), 12 states have return successors, (23), 15 states have call predecessors, (23), 17 states have call successors, (23) [2024-10-15 14:32:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2024-10-15 14:32:55,415 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 63 [2024-10-15 14:32:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:55,416 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2024-10-15 14:32:55,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 2 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-15 14:32:55,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2024-10-15 14:32:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-15 14:32:55,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:55,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:55,434 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:55,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:32:55,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:55,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1363737354, now seen corresponding path program 1 times [2024-10-15 14:32:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:55,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817675096] [2024-10-15 14:32:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:32:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:32:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:32:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:32:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:55,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:32:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 14:32:56,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:56,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817675096] [2024-10-15 14:32:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817675096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:56,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593352262] [2024-10-15 14:32:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:56,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:56,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:56,071 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:56,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 14:32:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:56,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 14:32:56,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:32:56,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:32:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593352262] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:56,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 28 [2024-10-15 14:32:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110429218] [2024-10-15 14:32:56,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:56,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 14:32:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 14:32:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:32:56,711 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 28 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-15 14:32:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:57,506 INFO L93 Difference]: Finished difference Result 150 states and 196 transitions. [2024-10-15 14:32:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 14:32:57,507 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 63 [2024-10-15 14:32:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:57,508 INFO L225 Difference]: With dead ends: 150 [2024-10-15 14:32:57,508 INFO L226 Difference]: Without dead ends: 139 [2024-10-15 14:32:57,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:32:57,509 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:57,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 435 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:32:57,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-15 14:32:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 111. [2024-10-15 14:32:57,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 83 states have internal predecessors, (99), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (24), 16 states have call predecessors, (24), 18 states have call successors, (24) [2024-10-15 14:32:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-10-15 14:32:57,538 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 63 [2024-10-15 14:32:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:57,539 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-10-15 14:32:57,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-15 14:32:57,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-10-15 14:32:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-15 14:32:57,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:57,540 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:57,555 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:57,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 14:32:57,745 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:57,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:57,745 INFO L85 PathProgramCache]: Analyzing trace with hash 968241479, now seen corresponding path program 5 times [2024-10-15 14:32:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485048356] [2024-10-15 14:32:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:32:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:32:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:32:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485048356] [2024-10-15 14:32:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485048356] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060742937] [2024-10-15 14:32:57,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:32:57,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:57,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:57,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:57,969 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 14:32:58,106 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-15 14:32:58,107 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:58,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 14:32:58,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-15 14:32:58,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:32:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-15 14:32:58,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060742937] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:32:58,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:32:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 21 [2024-10-15 14:32:58,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255862212] [2024-10-15 14:32:58,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:32:58,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 14:32:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:32:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 14:32:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:32:58,305 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-15 14:32:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:32:58,686 INFO L93 Difference]: Finished difference Result 177 states and 233 transitions. [2024-10-15 14:32:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:32:58,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2024-10-15 14:32:58,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:32:58,687 INFO L225 Difference]: With dead ends: 177 [2024-10-15 14:32:58,688 INFO L226 Difference]: Without dead ends: 120 [2024-10-15 14:32:58,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:32:58,689 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:32:58,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 425 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:32:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-15 14:32:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2024-10-15 14:32:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 88 states have internal predecessors, (104), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (25), 16 states have call predecessors, (25), 18 states have call successors, (25) [2024-10-15 14:32:58,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2024-10-15 14:32:58,713 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 64 [2024-10-15 14:32:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:32:58,713 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2024-10-15 14:32:58,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 20 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-15 14:32:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2024-10-15 14:32:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-15 14:32:58,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:32:58,715 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:32:58,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-15 14:32:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:58,915 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:32:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:32:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1005370737, now seen corresponding path program 6 times [2024-10-15 14:32:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:32:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016831281] [2024-10-15 14:32:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:32:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:32:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:32:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:32:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:32:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:32:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:32:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:32:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:32:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:32:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:32:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 14:32:59,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:32:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016831281] [2024-10-15 14:32:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016831281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:32:59,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507215049] [2024-10-15 14:32:59,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:32:59,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:32:59,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:32:59,181 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:32:59,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 14:32:59,300 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-15 14:32:59,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:32:59,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:32:59,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:32:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 14:32:59,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:33:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 14:33:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507215049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:33:00,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:33:00,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 16] total 35 [2024-10-15 14:33:00,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338478] [2024-10-15 14:33:00,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:33:00,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-15 14:33:00,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:33:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-15 14:33:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:33:00,166 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand has 35 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-15 14:33:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:33:00,649 INFO L93 Difference]: Finished difference Result 154 states and 196 transitions. [2024-10-15 14:33:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:33:00,650 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 65 [2024-10-15 14:33:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:33:00,651 INFO L225 Difference]: With dead ends: 154 [2024-10-15 14:33:00,651 INFO L226 Difference]: Without dead ends: 133 [2024-10-15 14:33:00,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:33:00,653 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:33:00,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 414 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:33:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-15 14:33:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2024-10-15 14:33:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 89 states have internal predecessors, (106), 21 states have call successors, (21), 11 states have call predecessors, (21), 13 states have return successors, (23), 16 states have call predecessors, (23), 18 states have call successors, (23) [2024-10-15 14:33:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2024-10-15 14:33:00,680 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 65 [2024-10-15 14:33:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:33:00,680 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2024-10-15 14:33:00,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-15 14:33:00,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:33:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2024-10-15 14:33:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-15 14:33:00,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:33:00,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:33:00,699 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 14:33:00,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 14:33:00,887 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:33:00,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:33:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 986900959, now seen corresponding path program 1 times [2024-10-15 14:33:00,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:33:00,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168834410] [2024-10-15 14:33:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:33:00,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:33:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:33:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:33:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:33:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:33:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:33:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:33:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:33:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:02,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:33:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:03,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:33:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 14:33:03,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:33:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168834410] [2024-10-15 14:33:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168834410] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:33:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145013827] [2024-10-15 14:33:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:33:03,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:33:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:33:03,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:33:03,742 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 14:33:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:33:03,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-10-15 14:33:03,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:33:04,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 14:33:04,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-10-15 14:33:04,220 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-10-15 14:33:04,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-10-15 14:33:04,329 INFO L378 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 15 treesize of output 10 [2024-10-15 14:33:04,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 14:33:04,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2024-10-15 14:33:04,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2024-10-15 14:33:04,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 14 [2024-10-15 14:33:04,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2024-10-15 14:33:05,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2024-10-15 14:33:31,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:33:31,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 174 treesize of output 264 [2024-10-15 14:33:32,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:32,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:54,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:54,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:55,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,057 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,087 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,152 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:33:55,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 90 [2024-10-15 14:33:55,211 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:55,331 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:55,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:33:55,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 90 [2024-10-15 14:33:55,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:55,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:55,982 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:55,990 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:55,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 88 treesize of output 82 [2024-10-15 14:33:56,007 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:56,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:56,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:56,042 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:56,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:56,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:56,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:56,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:56,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,145 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:57,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:57,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,525 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:57,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:57,533 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:57,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:57,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:57,615 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:57,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:57,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:57,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:57,954 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:57,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:58,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:58,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:58,597 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:58,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:58,604 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:58,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:58,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:58,633 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:58,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:58,938 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:58,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:58,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:59,159 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:59,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:59,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:33:59,240 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:59,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:59,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:33:59,413 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:33:59,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:33:59,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:04,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:04,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:04,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:05,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:07,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:09,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:09,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:34:10,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 232 treesize of output 294 [2024-10-15 14:34:10,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:10,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,402 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:34:10,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:34:10,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,767 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:34:10,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:34:10,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:10,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:10,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:11,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:11,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:11,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:34:11,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 179 treesize of output 241 [2024-10-15 14:34:12,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:34:12,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 179 treesize of output 241 [2024-10-15 14:34:12,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:13,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,235 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:34:13,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:34:13,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:13,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:13,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:13,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 97 treesize of output 95 [2024-10-15 14:34:13,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:13,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:14,281 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:34:14,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:34:14,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:14,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:34:14,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 100 [2024-10-15 14:34:14,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 14 treesize of output 10 [2024-10-15 14:34:14,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:14,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2024-10-15 14:34:14,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 14:34:14,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 170 [2024-10-15 14:34:15,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:15,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 61 treesize of output 59 [2024-10-15 14:34:15,320 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 14:34:15,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 16 [2024-10-15 14:35:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 14:35:13,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:35:20,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145013827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:35:20,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:35:20,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 36] total 64 [2024-10-15 14:35:20,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655350981] [2024-10-15 14:35:20,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:35:20,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-15 14:35:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:35:20,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-15 14:35:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5422, Unknown=8, NotChecked=0, Total=5700 [2024-10-15 14:35:20,292 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 64 states, 47 states have (on average 1.702127659574468) internal successors, (80), 50 states have internal predecessors, (80), 15 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-10-15 14:35:26,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-15 14:35:30,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-15 14:35:39,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-15 14:35:44,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-15 14:35:50,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-15 14:35:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:35:50,761 INFO L93 Difference]: Finished difference Result 161 states and 203 transitions. [2024-10-15 14:35:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-15 14:35:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 47 states have (on average 1.702127659574468) internal successors, (80), 50 states have internal predecessors, (80), 15 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) Word has length 67 [2024-10-15 14:35:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:35:50,763 INFO L225 Difference]: With dead ends: 161 [2024-10-15 14:35:50,763 INFO L226 Difference]: Without dead ends: 159 [2024-10-15 14:35:50,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 100.0s TimeCoverageRelationStatistics Valid=657, Invalid=11766, Unknown=9, NotChecked=0, Total=12432 [2024-10-15 14:35:50,766 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 83 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2024-10-15 14:35:50,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 370 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2769 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2024-10-15 14:35:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-15 14:35:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 132. [2024-10-15 14:35:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 99 states have internal predecessors, (117), 24 states have call successors, (24), 13 states have call predecessors, (24), 15 states have return successors, (27), 19 states have call predecessors, (27), 20 states have call successors, (27) [2024-10-15 14:35:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2024-10-15 14:35:50,825 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 67 [2024-10-15 14:35:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:35:50,826 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2024-10-15 14:35:50,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 47 states have (on average 1.702127659574468) internal successors, (80), 50 states have internal predecessors, (80), 15 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-10-15 14:35:50,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2024-10-15 14:35:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-15 14:35:50,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:35:50,828 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:35:50,846 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-15 14:35:51,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 14:35:51,029 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:35:51,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash 991083670, now seen corresponding path program 7 times [2024-10-15 14:35:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:35:51,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448342571] [2024-10-15 14:35:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:35:51,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:35:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:35:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:35:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:35:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:35:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:35:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:35:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:35:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:35:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 14:35:51,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:35:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448342571] [2024-10-15 14:35:51,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448342571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:35:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088599530] [2024-10-15 14:35:51,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:35:51,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:35:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:35:51,309 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:35:51,310 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 14:35:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:51,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:35:51,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:35:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 14:35:51,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:35:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 14:35:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088599530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:35:51,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:35:51,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 19 [2024-10-15 14:35:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006771470] [2024-10-15 14:35:51,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:35:51,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 14:35:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:35:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 14:35:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:35:51,764 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:35:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:35:52,135 INFO L93 Difference]: Finished difference Result 185 states and 232 transitions. [2024-10-15 14:35:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:35:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2024-10-15 14:35:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:35:52,136 INFO L225 Difference]: With dead ends: 185 [2024-10-15 14:35:52,136 INFO L226 Difference]: Without dead ends: 130 [2024-10-15 14:35:52,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:35:52,137 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:35:52,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 229 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:35:52,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-10-15 14:35:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2024-10-15 14:35:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 88 states have internal predecessors, (103), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (22), 18 states have call predecessors, (22), 18 states have call successors, (22) [2024-10-15 14:35:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 147 transitions. [2024-10-15 14:35:52,170 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 147 transitions. Word has length 67 [2024-10-15 14:35:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:35:52,171 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 147 transitions. [2024-10-15 14:35:52,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-15 14:35:52,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 147 transitions. [2024-10-15 14:35:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:35:52,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:35:52,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:35:52,189 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-15 14:35:52,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 14:35:52,372 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:35:52,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1758161374, now seen corresponding path program 2 times [2024-10-15 14:35:52,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:35:52,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278392328] [2024-10-15 14:35:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:35:52,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:35:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:35:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:35:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:35:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:35:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:35:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:35:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:35:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:35:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:35:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:35:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:35:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278392328] [2024-10-15 14:35:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278392328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:35:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510944940] [2024-10-15 14:35:52,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:35:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:35:52,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:35:52,591 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:35:52,594 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 14:35:52,717 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:35:52,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:35:52,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:35:52,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:35:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-15 14:35:52,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:35:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 14:35:53,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510944940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:35:53,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:35:53,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 21 [2024-10-15 14:35:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979982979] [2024-10-15 14:35:53,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:35:53,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 14:35:53,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:35:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 14:35:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:35:53,046 INFO L87 Difference]: Start difference. First operand 120 states and 147 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-15 14:35:53,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:35:53,469 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2024-10-15 14:35:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:35:53,469 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 68 [2024-10-15 14:35:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:35:53,470 INFO L225 Difference]: With dead ends: 157 [2024-10-15 14:35:53,470 INFO L226 Difference]: Without dead ends: 138 [2024-10-15 14:35:53,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:35:53,471 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:35:53,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 268 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:35:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-15 14:35:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2024-10-15 14:35:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 102 states have internal predecessors, (119), 26 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (27), 20 states have call predecessors, (27), 22 states have call successors, (27) [2024-10-15 14:35:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2024-10-15 14:35:53,541 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 68 [2024-10-15 14:35:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:35:53,542 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2024-10-15 14:35:53,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-15 14:35:53,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:53,542 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2024-10-15 14:35:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:35:53,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:35:53,543 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:35:53,556 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-15 14:35:53,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 14:35:53,744 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:35:53,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:35:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1238177196, now seen corresponding path program 8 times [2024-10-15 14:35:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:35:53,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544394306] [2024-10-15 14:35:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:35:53,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:35:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:35:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:35:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:35:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:35:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:35:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:35:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:35:58,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:35:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:36:31,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:36:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat