./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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 22:58:16,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 22:58:16,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 22:58:16,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 22:58:16,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 22:58:16,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 22:58:16,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 22:58:16,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 22:58:16,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 22:58:16,859 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 22:58:16,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 22:58:16,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 22:58:16,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 22:58:16,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 22:58:16,860 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 22:58:16,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 22:58:16,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 22:58:16,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 22:58:16,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 22:58:16,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 22:58:16,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 22:58:16,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 22:58:16,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 22:58:16,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 22:58:16,863 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 22:58:16,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 22:58:16,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 22:58:16,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 22:58:16,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 22:58:16,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 22:58:16,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 22:58:16,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 22:58:16,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 22:58:16,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 22:58:16,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 22:58:16,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 22:58:16,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 22:58:16,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 22:58:16,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 22:58:16,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 22:58:16,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 22:58:16,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 22:58:16,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cd641fa41c29ed0240eed782d3555502472fe8bb63d504547076d8eeefa2c0d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 22:58:17,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 22:58:17,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 22:58:17,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 22:58:17,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 22:58:17,091 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 22:58:17,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-09-12 22:58:18,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 22:58:18,437 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 22:58:18,437 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/prefixsum_iter.c [2024-09-12 22:58:18,443 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4f4ce2034/17333915814e4ab3b9aff06cc33a82a8/FLAG0ff55e788 [2024-09-12 22:58:18,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4f4ce2034/17333915814e4ab3b9aff06cc33a82a8 [2024-09-12 22:58:18,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 22:58:18,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 22:58:18,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 22:58:18,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 22:58:18,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 22:58:18,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 10:58:18" (1/1) ... [2024-09-12 22:58:18,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ef52ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:18, skipping insertion in model container [2024-09-12 22:58:18,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 10:58:18" (1/1) ... [2024-09-12 22:58:18,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 22:58:18,983 WARN L247 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] [2024-09-12 22:58:19,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 22:58:19,008 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 22:58:19,017 WARN L247 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] [2024-09-12 22:58:19,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 22:58:19,041 INFO L204 MainTranslator]: Completed translation [2024-09-12 22:58:19,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19 WrapperNode [2024-09-12 22:58:19,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 22:58:19,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 22:58:19,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 22:58:19,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 22:58:19,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,067 INFO L138 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 22:58:19,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 22:58:19,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 22:58:19,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 22:58:19,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 22:58:19,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,093 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]. [2024-09-12 22:58:19,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 22:58:19,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 22:58:19,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 22:58:19,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 22:58:19,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (1/1) ... [2024-09-12 22:58:19,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 22:58:19,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:19,136 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) [2024-09-12 22:58:19,138 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 [2024-09-12 22:58:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 22:58:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 22:58:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 22:58:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 22:58:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 22:58:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 22:58:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 22:58:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-12 22:58:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-12 22:58:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure downsweep [2024-09-12 22:58:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure downsweep [2024-09-12 22:58:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 22:58:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 22:58:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 22:58:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure is_pow2 [2024-09-12 22:58:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure is_pow2 [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure upsweep [2024-09-12 22:58:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure upsweep [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 22:58:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 22:58:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-12 22:58:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-12 22:58:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 22:58:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 22:58:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 22:58:19,262 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 22:58:19,264 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 22:58:19,450 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-09-12 22:58:19,450 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 22:58:19,472 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 22:58:19,473 INFO L318 CfgBuilder]: Removed 7 assume(true) statements. [2024-09-12 22:58:19,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 10:58:19 BoogieIcfgContainer [2024-09-12 22:58:19,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 22:58:19,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 22:58:19,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 22:58:19,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 22:58:19,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 10:58:18" (1/3) ... [2024-09-12 22:58:19,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d5b2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 10:58:19, skipping insertion in model container [2024-09-12 22:58:19,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 10:58:19" (2/3) ... [2024-09-12 22:58:19,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d5b2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 10:58:19, skipping insertion in model container [2024-09-12 22:58:19,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 10:58:19" (3/3) ... [2024-09-12 22:58:19,481 INFO L112 eAbstractionObserver]: Analyzing ICFG prefixsum_iter.c [2024-09-12 22:58:19,496 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 22:58:19,496 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 22:58:19,533 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 22:58:19,538 INFO L336 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;@18783211, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 22:58:19,538 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 22:58:19,541 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) [2024-09-12 22:58:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 22:58:19,546 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:19,547 INFO L216 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] [2024-09-12 22:58:19,547 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:19,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1085934665, now seen corresponding path program 1 times [2024-09-12 22:58:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:19,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233040557] [2024-09-12 22:58:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 22:58:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 22:58:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:19,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233040557] [2024-09-12 22:58:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233040557] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:58:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 22:58:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 22:58:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943943644] [2024-09-12 22:58:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:58:19,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 22:58:19,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 22:58:19,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 22:58:19,805 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) [2024-09-12 22:58:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:19,937 INFO L93 Difference]: Finished difference Result 113 states and 157 transitions. [2024-09-12 22:58:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 22:58:19,939 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 [2024-09-12 22:58:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:19,945 INFO L225 Difference]: With dead ends: 113 [2024-09-12 22:58:19,945 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 22:58:19,947 INFO L433 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 [2024-09-12 22:58:19,950 INFO L434 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 [2024-09-12 22:58:19,950 INFO L435 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] [2024-09-12 22:58:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 22:58:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-09-12 22:58:19,976 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) [2024-09-12 22:58:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-09-12 22:58:19,980 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 49 [2024-09-12 22:58:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:19,982 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-09-12 22:58:19,982 INFO L475 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) [2024-09-12 22:58:19,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-09-12 22:58:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 22:58:19,985 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:19,985 INFO L216 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] [2024-09-12 22:58:19,985 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 22:58:19,986 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:19,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash -136188297, now seen corresponding path program 1 times [2024-09-12 22:58:19,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:19,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005584482] [2024-09-12 22:58:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:19,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 22:58:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 22:58:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:20,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005584482] [2024-09-12 22:58:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005584482] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:58:20,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 22:58:20,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 22:58:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385642737] [2024-09-12 22:58:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:58:20,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 22:58:20,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 22:58:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 22:58:20,244 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) [2024-09-12 22:58:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:20,403 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2024-09-12 22:58:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 22:58:20,403 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 [2024-09-12 22:58:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:20,404 INFO L225 Difference]: With dead ends: 72 [2024-09-12 22:58:20,404 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 22:58:20,405 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-09-12 22:58:20,405 INFO L434 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:20,406 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 167 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 22:58:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 22:58:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2024-09-12 22:58:20,418 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) [2024-09-12 22:58:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-09-12 22:58:20,421 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 49 [2024-09-12 22:58:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:20,422 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-09-12 22:58:20,422 INFO L475 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) [2024-09-12 22:58:20,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-09-12 22:58:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 22:58:20,424 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:20,424 INFO L216 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] [2024-09-12 22:58:20,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 22:58:20,425 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -963858507, now seen corresponding path program 1 times [2024-09-12 22:58:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:20,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546485035] [2024-09-12 22:58:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 22:58:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:20,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 22:58:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:21,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:21,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546485035] [2024-09-12 22:58:21,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546485035] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:21,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304101965] [2024-09-12 22:58:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:21,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:21,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:21,032 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) [2024-09-12 22:58:21,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 22:58:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:21,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 22:58:21,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:21,211 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 [2024-09-12 22:58:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:21,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:21,451 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 [2024-09-12 22:58:21,454 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 [2024-09-12 22:58:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304101965] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:21,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 27 [2024-09-12 22:58:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785596499] [2024-09-12 22:58:21,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:21,540 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 22:58:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 22:58:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2024-09-12 22:58:21,541 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) [2024-09-12 22:58:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:22,270 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2024-09-12 22:58:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 22:58:22,271 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 [2024-09-12 22:58:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:22,272 INFO L225 Difference]: With dead ends: 102 [2024-09-12 22:58:22,273 INFO L226 Difference]: Without dead ends: 100 [2024-09-12 22:58:22,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=220, Invalid=1942, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 22:58:22,274 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 142 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:22,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 297 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 22:58:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-12 22:58:22,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-09-12 22:58:22,294 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) [2024-09-12 22:58:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2024-09-12 22:58:22,296 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 50 [2024-09-12 22:58:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:22,297 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2024-09-12 22:58:22,297 INFO L475 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) [2024-09-12 22:58:22,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:22,297 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2024-09-12 22:58:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 22:58:22,298 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:22,298 INFO L216 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] [2024-09-12 22:58:22,311 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 22:58:22,499 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:22,499 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:22,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 384710234, now seen corresponding path program 1 times [2024-09-12 22:58:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776325811] [2024-09-12 22:58:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:22,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 22:58:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 22:58:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 22:58:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776325811] [2024-09-12 22:58:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776325811] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:22,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924110584] [2024-09-12 22:58:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:22,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:22,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:22,703 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) [2024-09-12 22:58:22,704 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 22:58:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:22,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 22:58:22,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 22:58:22,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 22:58:22,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924110584] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:58:22,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 22:58:22,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 14 [2024-09-12 22:58:22,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250671431] [2024-09-12 22:58:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:58:22,861 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 22:58:22,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:22,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 22:58:22,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-09-12 22:58:22,862 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) [2024-09-12 22:58:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:22,946 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2024-09-12 22:58:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 22:58:22,946 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 [2024-09-12 22:58:22,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:22,948 INFO L225 Difference]: With dead ends: 123 [2024-09-12 22:58:22,948 INFO L226 Difference]: Without dead ends: 102 [2024-09-12 22:58:22,948 INFO L433 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 [2024-09-12 22:58:22,949 INFO L434 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 [2024-09-12 22:58:22,949 INFO L435 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] [2024-09-12 22:58:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-09-12 22:58:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2024-09-12 22:58:22,966 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) [2024-09-12 22:58:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2024-09-12 22:58:22,968 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 55 [2024-09-12 22:58:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:22,969 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2024-09-12 22:58:22,969 INFO L475 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) [2024-09-12 22:58:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2024-09-12 22:58:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 22:58:22,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:22,974 INFO L216 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] [2024-09-12 22:58:22,987 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 22:58:23,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:23,179 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:23,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash -336622505, now seen corresponding path program 1 times [2024-09-12 22:58:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:23,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384180998] [2024-09-12 22:58:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 22:58:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 22:58:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 22:58:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:23,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:23,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384180998] [2024-09-12 22:58:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384180998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667362086] [2024-09-12 22:58:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:23,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:23,293 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) [2024-09-12 22:58:23,295 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 22:58:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 22:58:23,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:23,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667362086] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:23,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-09-12 22:58:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858063116] [2024-09-12 22:58:23,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:23,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 22:58:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:23,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 22:58:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 22:58:23,479 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) [2024-09-12 22:58:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:23,657 INFO L93 Difference]: Finished difference Result 114 states and 146 transitions. [2024-09-12 22:58:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 22:58:23,658 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 [2024-09-12 22:58:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:23,659 INFO L225 Difference]: With dead ends: 114 [2024-09-12 22:58:23,659 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 22:58:23,659 INFO L433 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 [2024-09-12 22:58:23,660 INFO L434 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:23,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 311 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 22:58:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 22:58:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-12 22:58:23,671 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) [2024-09-12 22:58:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2024-09-12 22:58:23,673 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 57 [2024-09-12 22:58:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:23,674 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2024-09-12 22:58:23,674 INFO L475 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) [2024-09-12 22:58:23,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2024-09-12 22:58:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 22:58:23,675 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:23,675 INFO L216 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] [2024-09-12 22:58:23,687 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 22:58:23,876 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:23,876 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:23,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash -254005355, now seen corresponding path program 2 times [2024-09-12 22:58:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:23,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342311443] [2024-09-12 22:58:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 22:58:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 22:58:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 22:58:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 22:58:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342311443] [2024-09-12 22:58:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342311443] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087849676] [2024-09-12 22:58:23,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 22:58:23,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:23,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:23,981 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) [2024-09-12 22:58:23,983 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 22:58:24,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 22:58:24,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:24,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 22:58:24,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 22:58:24,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 22:58:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087849676] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 22:58:24,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 22:58:24,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2024-09-12 22:58:24,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650917243] [2024-09-12 22:58:24,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 22:58:24,130 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 22:58:24,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 22:58:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-09-12 22:58:24,131 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) [2024-09-12 22:58:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:24,207 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2024-09-12 22:58:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 22:58:24,207 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 [2024-09-12 22:58:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:24,210 INFO L225 Difference]: With dead ends: 114 [2024-09-12 22:58:24,210 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 22:58:24,210 INFO L433 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 [2024-09-12 22:58:24,211 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-09-12 22:58:24,213 INFO L435 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] [2024-09-12 22:58:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 22:58:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2024-09-12 22:58:24,226 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) [2024-09-12 22:58:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2024-09-12 22:58:24,226 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 58 [2024-09-12 22:58:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:24,227 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2024-09-12 22:58:24,227 INFO L475 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) [2024-09-12 22:58:24,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2024-09-12 22:58:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 22:58:24,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:24,228 INFO L216 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] [2024-09-12 22:58:24,241 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 22:58:24,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:24,432 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:24,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -764459887, now seen corresponding path program 1 times [2024-09-12 22:58:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032540695] [2024-09-12 22:58:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:24,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 22:58:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 22:58:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 22:58:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032540695] [2024-09-12 22:58:24,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032540695] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873062099] [2024-09-12 22:58:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:24,580 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) [2024-09-12 22:58:24,581 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 22:58:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:24,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 22:58:24,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 22:58:24,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 22:58:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873062099] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:24,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2024-09-12 22:58:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109563758] [2024-09-12 22:58:24,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:24,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 22:58:24,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 22:58:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-12 22:58:24,956 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) [2024-09-12 22:58:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:25,217 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2024-09-12 22:58:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 22:58:25,217 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 [2024-09-12 22:58:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:25,218 INFO L225 Difference]: With dead ends: 118 [2024-09-12 22:58:25,219 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 22:58:25,219 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-09-12 22:58:25,220 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-12 22:58:25,220 INFO L435 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] [2024-09-12 22:58:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 22:58:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2024-09-12 22:58:25,236 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) [2024-09-12 22:58:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-09-12 22:58:25,238 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 58 [2024-09-12 22:58:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:25,238 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-09-12 22:58:25,238 INFO L475 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) [2024-09-12 22:58:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-09-12 22:58:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 22:58:25,239 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:25,239 INFO L216 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] [2024-09-12 22:58:25,256 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 22:58:25,439 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 22:58:25,440 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:25,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1823892196, now seen corresponding path program 1 times [2024-09-12 22:58:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290278399] [2024-09-12 22:58:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 22:58:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 22:58:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 22:58:25,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:25,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290278399] [2024-09-12 22:58:25,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290278399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:25,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839076771] [2024-09-12 22:58:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:25,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:25,585 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) [2024-09-12 22:58:25,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 22:58:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:25,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 22:58:25,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 22:58:25,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-12 22:58:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839076771] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:25,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 12 [2024-09-12 22:58:25,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503394853] [2024-09-12 22:58:25,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:25,762 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 22:58:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 22:58:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-12 22:58:25,763 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) [2024-09-12 22:58:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:25,916 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2024-09-12 22:58:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 22:58:25,917 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 [2024-09-12 22:58:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:25,918 INFO L225 Difference]: With dead ends: 104 [2024-09-12 22:58:25,918 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 22:58:25,918 INFO L433 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 [2024-09-12 22:58:25,919 INFO L434 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 [2024-09-12 22:58:25,919 INFO L435 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] [2024-09-12 22:58:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 22:58:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-09-12 22:58:25,925 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) [2024-09-12 22:58:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-09-12 22:58:25,925 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 58 [2024-09-12 22:58:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:25,926 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-09-12 22:58:25,926 INFO L475 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) [2024-09-12 22:58:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-09-12 22:58:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 22:58:25,927 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:25,927 INFO L216 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] [2024-09-12 22:58:25,939 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 22:58:26,127 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:26,127 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:26,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash 90056550, now seen corresponding path program 2 times [2024-09-12 22:58:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:26,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268264232] [2024-09-12 22:58:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 22:58:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:26,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 22:58:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 22:58:27,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268264232] [2024-09-12 22:58:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268264232] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748318925] [2024-09-12 22:58:27,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 22:58:27,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:27,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:27,055 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) [2024-09-12 22:58:27,056 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 22:58:27,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 22:58:27,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:27,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-12 22:58:27,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:27,400 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 [2024-09-12 22:58:27,555 INFO L349 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2024-09-12 22:58:27,555 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 [2024-09-12 22:58:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 22:58:27,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:28,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:58:28,214 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 [2024-09-12 22:58:28,233 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:28,234 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:28,238 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:28,239 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:28,583 INFO L349 Elim1Store]: treesize reduction 384, result has 42.4 percent of original size [2024-09-12 22:58:28,583 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 [2024-09-12 22:58:28,650 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 [2024-09-12 22:58:28,735 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 [2024-09-12 22:58:28,744 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 [2024-09-12 22:58:29,177 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,179 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,180 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,181 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,186 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,188 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,188 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,189 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,190 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,192 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-12 22:58:29,264 INFO L349 Elim1Store]: treesize reduction 131, result has 27.6 percent of original size [2024-09-12 22:58:29,264 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 1088 treesize of output 879 [2024-09-12 22:58:29,636 INFO L349 Elim1Store]: treesize reduction 43, result has 24.6 percent of original size [2024-09-12 22:58:29,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 862 treesize of output 709 [2024-09-12 22:58:29,722 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 22:58:29,725 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-09-12 22:58:29,981 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 [2024-09-12 22:58:29,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:58:29,987 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 80 treesize of output 1 [2024-09-12 22:58:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 22:58:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748318925] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:30,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 17] total 56 [2024-09-12 22:58:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660784424] [2024-09-12 22:58:30,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:30,239 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 22:58:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:30,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 22:58:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2892, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 22:58:30,241 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) [2024-09-12 22:58:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:31,877 INFO L93 Difference]: Finished difference Result 171 states and 232 transitions. [2024-09-12 22:58:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 22:58:31,878 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 [2024-09-12 22:58:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:31,879 INFO L225 Difference]: With dead ends: 171 [2024-09-12 22:58:31,879 INFO L226 Difference]: Without dead ends: 169 [2024-09-12 22:58:31,880 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=447, Invalid=6693, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 22:58:31,880 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 173 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:31,881 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 457 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 22:58:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-09-12 22:58:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 90. [2024-09-12 22:58:31,897 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) [2024-09-12 22:58:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2024-09-12 22:58:31,898 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 59 [2024-09-12 22:58:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:31,898 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2024-09-12 22:58:31,898 INFO L475 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) [2024-09-12 22:58:31,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2024-09-12 22:58:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 22:58:31,899 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:31,899 INFO L216 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] [2024-09-12 22:58:31,911 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 22:58:32,099 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:32,100 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:32,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1661804742, now seen corresponding path program 3 times [2024-09-12 22:58:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218330123] [2024-09-12 22:58:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 22:58:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 22:58:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 22:58:32,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218330123] [2024-09-12 22:58:32,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218330123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:32,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165234984] [2024-09-12 22:58:32,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 22:58:32,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:32,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:32,271 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) [2024-09-12 22:58:32,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 22:58:32,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 22:58:32,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:32,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 22:58:32,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 22:58:32,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 22:58:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165234984] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:32,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-09-12 22:58:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478104054] [2024-09-12 22:58:32,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:32,708 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 22:58:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 22:58:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-09-12 22:58:32,709 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) [2024-09-12 22:58:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:33,338 INFO L93 Difference]: Finished difference Result 183 states and 259 transitions. [2024-09-12 22:58:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-12 22:58:33,339 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 [2024-09-12 22:58:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:33,340 INFO L225 Difference]: With dead ends: 183 [2024-09-12 22:58:33,341 INFO L226 Difference]: Without dead ends: 143 [2024-09-12 22:58:33,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=2337, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 22:58:33,342 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 64 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:33,342 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 414 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 22:58:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-12 22:58:33,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 121. [2024-09-12 22:58:33,363 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) [2024-09-12 22:58:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2024-09-12 22:58:33,364 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 61 [2024-09-12 22:58:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:33,364 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2024-09-12 22:58:33,364 INFO L475 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) [2024-09-12 22:58:33,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2024-09-12 22:58:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 22:58:33,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:33,365 INFO L216 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] [2024-09-12 22:58:33,377 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 22:58:33,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:33,566 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:33,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1323398257, now seen corresponding path program 4 times [2024-09-12 22:58:33,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726497724] [2024-09-12 22:58:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:58:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 22:58:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 22:58:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726497724] [2024-09-12 22:58:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726497724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988029018] [2024-09-12 22:58:33,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 22:58:33,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:33,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:33,672 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) [2024-09-12 22:58:33,673 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 22:58:33,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 22:58:33,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:33,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 22:58:33,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 22:58:33,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:33,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 22:58:33,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988029018] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:33,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:33,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-09-12 22:58:33,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590956566] [2024-09-12 22:58:33,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:33,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 22:58:33,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:33,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 22:58:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-09-12 22:58:33,894 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) [2024-09-12 22:58:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:34,083 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2024-09-12 22:58:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 22:58:34,084 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 [2024-09-12 22:58:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:34,084 INFO L225 Difference]: With dead ends: 180 [2024-09-12 22:58:34,085 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 22:58:34,085 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-09-12 22:58:34,086 INFO L434 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:34,086 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 284 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 22:58:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 22:58:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2024-09-12 22:58:34,099 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) [2024-09-12 22:58:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2024-09-12 22:58:34,100 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 63 [2024-09-12 22:58:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:34,100 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2024-09-12 22:58:34,101 INFO L475 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) [2024-09-12 22:58:34,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2024-09-12 22:58:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 22:58:34,101 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:34,102 INFO L216 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] [2024-09-12 22:58:34,113 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 22:58:34,305 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 22:58:34,305 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:34,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1363737354, now seen corresponding path program 1 times [2024-09-12 22:58:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878331064] [2024-09-12 22:58:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 22:58:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 22:58:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 22:58:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:58:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 22:58:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 22:58:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878331064] [2024-09-12 22:58:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878331064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070630986] [2024-09-12 22:58:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:34,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:34,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:34,620 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) [2024-09-12 22:58:34,621 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 22:58:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:34,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 22:58:34,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 22:58:34,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 22:58:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070630986] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:35,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 28 [2024-09-12 22:58:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747063093] [2024-09-12 22:58:35,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:35,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 22:58:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 22:58:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2024-09-12 22:58:35,084 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) [2024-09-12 22:58:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:35,686 INFO L93 Difference]: Finished difference Result 150 states and 196 transitions. [2024-09-12 22:58:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 22:58:35,686 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 [2024-09-12 22:58:35,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:35,687 INFO L225 Difference]: With dead ends: 150 [2024-09-12 22:58:35,687 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 22:58:35,688 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 22:58:35,688 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:35,689 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 435 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 22:58:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 22:58:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 111. [2024-09-12 22:58:35,709 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) [2024-09-12 22:58:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2024-09-12 22:58:35,711 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 63 [2024-09-12 22:58:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:35,711 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2024-09-12 22:58:35,711 INFO L475 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) [2024-09-12 22:58:35,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2024-09-12 22:58:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 22:58:35,712 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:35,712 INFO L216 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] [2024-09-12 22:58:35,725 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 22:58:35,913 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 22:58:35,913 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:35,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 968241479, now seen corresponding path program 5 times [2024-09-12 22:58:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819996517] [2024-09-12 22:58:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:35,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:58:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 22:58:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 22:58:36,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819996517] [2024-09-12 22:58:36,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819996517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:36,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702255139] [2024-09-12 22:58:36,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 22:58:36,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:36,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:36,081 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) [2024-09-12 22:58:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 22:58:36,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 22:58:36,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:36,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 22:58:36,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 22:58:36,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 22:58:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702255139] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:36,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 21 [2024-09-12 22:58:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127550131] [2024-09-12 22:58:36,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:36,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 22:58:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 22:58:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-09-12 22:58:36,292 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) [2024-09-12 22:58:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:36,547 INFO L93 Difference]: Finished difference Result 177 states and 233 transitions. [2024-09-12 22:58:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 22:58:36,550 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 [2024-09-12 22:58:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:36,551 INFO L225 Difference]: With dead ends: 177 [2024-09-12 22:58:36,551 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 22:58:36,552 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2024-09-12 22:58:36,552 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:36,552 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 425 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 22:58:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 22:58:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2024-09-12 22:58:36,569 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) [2024-09-12 22:58:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2024-09-12 22:58:36,569 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 64 [2024-09-12 22:58:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:36,570 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2024-09-12 22:58:36,570 INFO L475 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) [2024-09-12 22:58:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2024-09-12 22:58:36,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 22:58:36,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:36,571 INFO L216 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] [2024-09-12 22:58:36,585 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 22:58:36,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:36,772 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:36,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:36,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1005370737, now seen corresponding path program 6 times [2024-09-12 22:58:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:36,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039824429] [2024-09-12 22:58:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:36,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 22:58:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 22:58:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 22:58:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:58:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 22:58:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 22:58:36,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039824429] [2024-09-12 22:58:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039824429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005658608] [2024-09-12 22:58:36,982 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 22:58:36,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:36,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:36,984 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) [2024-09-12 22:58:36,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 22:58:37,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-12 22:58:37,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 22:58:37,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 22:58:37,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 22:58:37,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:58:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-12 22:58:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005658608] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 22:58:37,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 22:58:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 16] total 35 [2024-09-12 22:58:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473061433] [2024-09-12 22:58:37,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 22:58:37,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 22:58:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:58:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 22:58:37,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 22:58:37,623 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) [2024-09-12 22:58:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 22:58:38,063 INFO L93 Difference]: Finished difference Result 154 states and 196 transitions. [2024-09-12 22:58:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 22:58:38,063 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 [2024-09-12 22:58:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 22:58:38,064 INFO L225 Difference]: With dead ends: 154 [2024-09-12 22:58:38,064 INFO L226 Difference]: Without dead ends: 133 [2024-09-12 22:58:38,065 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 22:58:38,065 INFO L434 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 22:58:38,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 414 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 22:58:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-12 22:58:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2024-09-12 22:58:38,083 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) [2024-09-12 22:58:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2024-09-12 22:58:38,084 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 65 [2024-09-12 22:58:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 22:58:38,084 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2024-09-12 22:58:38,084 INFO L475 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) [2024-09-12 22:58:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2024-09-12 22:58:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 22:58:38,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 22:58:38,085 INFO L216 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] [2024-09-12 22:58:38,097 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 22:58:38,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 22:58:38,290 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 22:58:38,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 22:58:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash 986900959, now seen corresponding path program 1 times [2024-09-12 22:58:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 22:58:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656287960] [2024-09-12 22:58:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 22:58:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 22:58:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 22:58:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 22:58:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 22:58:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 22:58:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 22:58:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 22:58:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:39,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 22:58:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:40,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 22:58:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 22:58:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 22:58:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656287960] [2024-09-12 22:58:40,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656287960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:58:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533953002] [2024-09-12 22:58:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 22:58:40,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 22:58:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 22:58:40,333 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) [2024-09-12 22:58:40,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 22:58:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 22:58:40,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-12 22:58:40,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 22:58:40,571 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 [2024-09-12 22:58:40,647 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 [2024-09-12 22:58:40,753 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-09-12 22:58:40,754 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 [2024-09-12 22:58:40,836 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 [2024-09-12 22:58:40,877 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 [2024-09-12 22:58:40,879 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 [2024-09-12 22:58:40,932 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 [2024-09-12 22:58:40,935 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 [2024-09-12 22:58:41,340 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 [2024-09-12 22:58:41,805 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 [2024-09-12 22:59:10,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:10,934 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 [2024-09-12 22:59:11,486 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 [2024-09-12 22:59:11,514 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 [2024-09-12 22:59:11,552 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 [2024-09-12 22:59:11,586 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 [2024-09-12 22:59:11,620 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 [2024-09-12 22:59:11,667 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 [2024-09-12 22:59:23,094 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 [2024-09-12 22:59:23,133 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 [2024-09-12 22:59:23,140 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 8 treesize of output 6 [2024-09-12 22:59:23,150 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 [2024-09-12 22:59:23,282 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 [2024-09-12 22:59:23,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,303 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 63 treesize of output 65 [2024-09-12 22:59:23,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,325 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 111 treesize of output 113 [2024-09-12 22:59:23,362 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 [2024-09-12 22:59:23,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,405 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 174 treesize of output 176 [2024-09-12 22:59:23,473 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 [2024-09-12 22:59:23,488 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 [2024-09-12 22:59:23,510 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 [2024-09-12 22:59:23,578 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 [2024-09-12 22:59:23,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,625 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 174 treesize of output 176 [2024-09-12 22:59:23,662 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 [2024-09-12 22:59:23,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,672 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 63 treesize of output 65 [2024-09-12 22:59:23,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,709 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 174 treesize of output 176 [2024-09-12 22:59:23,760 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 [2024-09-12 22:59:23,786 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 [2024-09-12 22:59:23,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:23,812 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 174 treesize of output 176 [2024-09-12 22:59:23,889 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 [2024-09-12 22:59:23,935 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 [2024-09-12 22:59:23,969 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 [2024-09-12 22:59:23,981 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 [2024-09-12 22:59:24,026 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 [2024-09-12 22:59:24,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:24,091 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 174 treesize of output 176 [2024-09-12 22:59:24,133 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 [2024-09-12 22:59:24,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:24,157 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 174 treesize of output 176 [2024-09-12 22:59:24,239 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 [2024-09-12 22:59:24,258 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 8 treesize of output 6 [2024-09-12 22:59:24,322 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-09-12 22:59:24,323 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 [2024-09-12 22:59:24,335 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 [2024-09-12 22:59:24,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:24,426 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 171 treesize of output 173 [2024-09-12 22:59:24,486 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 [2024-09-12 22:59:24,910 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 [2024-09-12 22:59:24,998 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 [2024-09-12 22:59:25,020 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 [2024-09-12 22:59:25,027 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 [2024-09-12 22:59:25,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,151 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 111 treesize of output 113 [2024-09-12 22:59:25,188 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 [2024-09-12 22:59:25,277 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 [2024-09-12 22:59:25,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,289 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 171 treesize of output 173 [2024-09-12 22:59:25,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,354 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 103 treesize of output 105 [2024-09-12 22:59:25,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,484 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 171 treesize of output 173 [2024-09-12 22:59:25,579 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 [2024-09-12 22:59:25,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,697 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 63 treesize of output 65 [2024-09-12 22:59:25,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,723 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 111 treesize of output 113 [2024-09-12 22:59:25,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,743 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 103 treesize of output 105 [2024-09-12 22:59:25,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:25,769 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 103 treesize of output 105 [2024-09-12 22:59:25,851 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 [2024-09-12 22:59:27,864 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 [2024-09-12 22:59:27,900 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 [2024-09-12 22:59:28,302 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 [2024-09-12 22:59:28,313 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 [2024-09-12 22:59:28,337 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 14 treesize of output 10 [2024-09-12 22:59:28,431 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 [2024-09-12 22:59:28,443 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 [2024-09-12 22:59:28,820 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 14 treesize of output 10 [2024-09-12 22:59:28,895 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 [2024-09-12 22:59:29,067 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 [2024-09-12 22:59:29,233 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 [2024-09-12 22:59:29,238 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 [2024-09-12 22:59:30,393 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 [2024-09-12 22:59:30,430 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 [2024-09-12 22:59:30,473 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 [2024-09-12 22:59:30,488 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 [2024-09-12 22:59:30,507 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 [2024-09-12 22:59:30,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:30,641 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 117 treesize of output 119 [2024-09-12 22:59:30,840 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 [2024-09-12 22:59:30,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:30,891 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 67 treesize of output 69 [2024-09-12 22:59:30,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:30,956 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 164 treesize of output 166 [2024-09-12 22:59:31,022 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 [2024-09-12 22:59:31,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:31,038 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 211 treesize of output 213 [2024-09-12 22:59:31,128 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 [2024-09-12 22:59:31,143 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 14 treesize of output 10 [2024-09-12 22:59:31,157 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 [2024-09-12 22:59:31,182 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 [2024-09-12 22:59:31,199 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 [2024-09-12 22:59:31,331 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 14 treesize of output 10 [2024-09-12 22:59:31,356 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 [2024-09-12 22:59:31,387 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 [2024-09-12 22:59:31,394 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 [2024-09-12 22:59:31,418 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 [2024-09-12 22:59:31,435 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 [2024-09-12 22:59:31,473 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 [2024-09-12 22:59:31,502 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 [2024-09-12 22:59:31,533 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 [2024-09-12 22:59:31,546 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 [2024-09-12 22:59:31,574 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 [2024-09-12 22:59:31,598 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 [2024-09-12 22:59:31,635 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 [2024-09-12 22:59:31,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:31,673 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 43 treesize of output 45 [2024-09-12 22:59:31,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 22:59:31,817 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 75 treesize of output 77 [2024-09-12 22:59:31,881 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 [2024-09-12 22:59:31,889 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 [2024-09-12 22:59:31,986 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 [2024-09-12 22:59:32,022 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 [2024-09-12 22:59:32,029 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 [2024-09-12 22:59:32,042 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 [2024-09-12 22:59:32,073 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 [2024-09-12 22:59:32,087 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 [2024-09-12 22:59:32,120 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 [2024-09-12 22:59:32,136 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 [2024-09-12 22:59:32,185 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 [2024-09-12 22:59:32,233 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 [2024-09-12 22:59:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 22:59:36,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 22:59:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533953002] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 22:59:38,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 22:59:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 36] total 64 [2024-09-12 22:59:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621297101] [2024-09-12 22:59:38,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 22:59:38,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-12 22:59:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 22:59:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-12 22:59:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=5424, Unknown=7, NotChecked=0, Total=5700 [2024-09-12 22:59:38,735 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) [2024-09-12 22:59:44,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 22:59:52,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 22:59:56,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:00:00,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:00:04,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:00:13,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:00:17,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:00:21,620 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] [2024-09-12 23:00:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:00:26,080 INFO L93 Difference]: Finished difference Result 165 states and 212 transitions. [2024-09-12 23:00:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 23:00:26,081 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 [2024-09-12 23:00:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:00:26,082 INFO L225 Difference]: With dead ends: 165 [2024-09-12 23:00:26,082 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 23:00:26,084 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=667, Invalid=11980, Unknown=9, NotChecked=0, Total=12656 [2024-09-12 23:00:26,085 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 174 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 87 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2024-09-12 23:00:26,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 376 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2807 Invalid, 11 Unknown, 0 Unchecked, 34.6s Time] [2024-09-12 23:00:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 23:00:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 132. [2024-09-12 23:00:26,116 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) [2024-09-12 23:00:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2024-09-12 23:00:26,117 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 67 [2024-09-12 23:00:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:00:26,117 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2024-09-12 23:00:26,117 INFO L475 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) [2024-09-12 23:00:26,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2024-09-12 23:00:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 23:00:26,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:00:26,118 INFO L216 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] [2024-09-12 23:00:26,130 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 23:00:26,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 23:00:26,323 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:00:26,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 991083670, now seen corresponding path program 7 times [2024-09-12 23:00:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:00:26,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710001303] [2024-09-12 23:00:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:00:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:00:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:00:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:00:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:00:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 23:00:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 23:00:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 23:00:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 23:00:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 23:00:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 23:00:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:00:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710001303] [2024-09-12 23:00:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710001303] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:00:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330305867] [2024-09-12 23:00:26,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 23:00:26,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:00:26,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:00:26,476 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) [2024-09-12 23:00:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 23:00:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:26,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 23:00:26,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:00:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 23:00:26,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:00:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 23:00:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330305867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:00:26,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:00:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 19 [2024-09-12 23:00:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805052094] [2024-09-12 23:00:26,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:00:26,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 23:00:26,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:00:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 23:00:26,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-09-12 23:00:26,776 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) [2024-09-12 23:00:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:00:27,048 INFO L93 Difference]: Finished difference Result 185 states and 232 transitions. [2024-09-12 23:00:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 23:00:27,048 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 [2024-09-12 23:00:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:00:27,049 INFO L225 Difference]: With dead ends: 185 [2024-09-12 23:00:27,049 INFO L226 Difference]: Without dead ends: 130 [2024-09-12 23:00:27,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2024-09-12 23:00:27,050 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:00:27,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 253 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 23:00:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-12 23:00:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2024-09-12 23:00:27,073 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) [2024-09-12 23:00:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 147 transitions. [2024-09-12 23:00:27,074 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 147 transitions. Word has length 67 [2024-09-12 23:00:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:00:27,074 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 147 transitions. [2024-09-12 23:00:27,074 INFO L475 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) [2024-09-12 23:00:27,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 147 transitions. [2024-09-12 23:00:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 23:00:27,075 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:00:27,075 INFO L216 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] [2024-09-12 23:00:27,090 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 23:00:27,275 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 23:00:27,276 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:00:27,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1758161374, now seen corresponding path program 2 times [2024-09-12 23:00:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:00:27,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20783270] [2024-09-12 23:00:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:00:27,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:00:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:00:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:00:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:00:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:00:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:00:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:00:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 23:00:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 23:00:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 23:00:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 23:00:27,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:00:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20783270] [2024-09-12 23:00:27,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20783270] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:00:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930499976] [2024-09-12 23:00:27,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 23:00:27,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:00:27,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:00:27,414 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) [2024-09-12 23:00:27,416 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 23:00:27,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 23:00:27,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:00:27,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 23:00:27,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:00:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-12 23:00:27,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:00:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 23:00:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930499976] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:00:27,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:00:27,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 21 [2024-09-12 23:00:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218077490] [2024-09-12 23:00:27,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:00:27,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 23:00:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:00:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 23:00:27,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-09-12 23:00:27,714 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) [2024-09-12 23:00:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:00:28,043 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2024-09-12 23:00:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 23:00:28,044 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 [2024-09-12 23:00:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:00:28,045 INFO L225 Difference]: With dead ends: 157 [2024-09-12 23:00:28,045 INFO L226 Difference]: Without dead ends: 138 [2024-09-12 23:00:28,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-09-12 23:00:28,045 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:00:28,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 321 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 23:00:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-09-12 23:00:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2024-09-12 23:00:28,075 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) [2024-09-12 23:00:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 172 transitions. [2024-09-12 23:00:28,076 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 172 transitions. Word has length 68 [2024-09-12 23:00:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:00:28,076 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 172 transitions. [2024-09-12 23:00:28,076 INFO L475 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) [2024-09-12 23:00:28,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 172 transitions. [2024-09-12 23:00:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 23:00:28,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:00:28,077 INFO L216 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] [2024-09-12 23:00:28,091 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 23:00:28,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 23:00:28,282 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:00:28,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:00:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1238177196, now seen corresponding path program 8 times [2024-09-12 23:00:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:00:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696207693] [2024-09-12 23:00:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:00:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:00:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:00:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:00:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:00:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 23:00:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 23:00:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 23:00:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:00:31,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 23:00:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:01:00,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 23:01:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 23:02:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696207693] [2024-09-12 23:02:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696207693] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98519979] [2024-09-12 23:02:08,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 23:02:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:08,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:08,293 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 23:02:08,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 23:02:08,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:08,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 23:02:08,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:08,578 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 [2024-09-12 23:02:08,731 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 [2024-09-12 23:02:08,920 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-09-12 23:02:08,920 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 [2024-09-12 23:02:09,116 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 14 treesize of output 16 [2024-09-12 23:02:09,309 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 21 treesize of output 14 [2024-09-12 23:02:09,418 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 [2024-09-12 23:02:09,507 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 [2024-09-12 23:02:10,941 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 35 treesize of output 26 [2024-09-12 23:02:12,007 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 61 treesize of output 52 [2024-09-12 23:02:12,628 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 98 treesize of output 84 [2024-09-12 23:02:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 23:02:12,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98519979] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:13,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 23:02:13,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 41] total 73 [2024-09-12 23:02:13,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519019010] [2024-09-12 23:02:13,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 23:02:13,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-12 23:02:13,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-12 23:02:13,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=5554, Unknown=0, NotChecked=0, Total=5852 [2024-09-12 23:02:13,686 INFO L87 Difference]: Start difference. First operand 136 states and 172 transitions. Second operand has 73 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 60 states have internal predecessors, (86), 14 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-12 23:02:40,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:02:43,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 23:02:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:43,555 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2024-09-12 23:02:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 23:02:43,556 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 60 states have internal predecessors, (86), 14 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 68 [2024-09-12 23:02:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:43,557 INFO L225 Difference]: With dead ends: 192 [2024-09-12 23:02:43,557 INFO L226 Difference]: Without dead ends: 190 [2024-09-12 23:02:43,560 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=706, Invalid=13574, Unknown=0, NotChecked=0, Total=14280 [2024-09-12 23:02:43,561 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 169 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:43,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 529 Invalid, 4045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3958 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2024-09-12 23:02:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-09-12 23:02:43,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2024-09-12 23:02:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 110 states have (on average 1.290909090909091) internal successors, (142), 120 states have internal predecessors, (142), 27 states have call successors, (27), 13 states have call predecessors, (27), 17 states have return successors, (35), 21 states have call predecessors, (35), 23 states have call successors, (35) [2024-09-12 23:02:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2024-09-12 23:02:43,610 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 68 [2024-09-12 23:02:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:43,610 INFO L474 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2024-09-12 23:02:43,610 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 60 states have internal predecessors, (86), 14 states have call successors, (19), 7 states have call predecessors, (19), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-09-12 23:02:43,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2024-09-12 23:02:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 23:02:43,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:43,612 INFO L216 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, 1, 1, 1, 1, 1] [2024-09-12 23:02:43,624 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-12 23:02:43,812 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:43,812 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:43,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2128419879, now seen corresponding path program 3 times [2024-09-12 23:02:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695992639] [2024-09-12 23:02:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:02:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:02:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:02:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 23:02:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 23:02:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 23:02:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 23:02:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:43,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695992639] [2024-09-12 23:02:43,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695992639] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:43,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803960190] [2024-09-12 23:02:43,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 23:02:43,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:43,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:43,949 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:43,950 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 23:02:44,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 23:02:44,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:44,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 23:02:44,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 23:02:44,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 23:02:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803960190] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:02:44,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:02:44,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 18 [2024-09-12 23:02:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306647527] [2024-09-12 23:02:44,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:02:44,251 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 23:02:44,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 23:02:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-09-12 23:02:44,252 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-12 23:02:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:44,726 INFO L93 Difference]: Finished difference Result 226 states and 297 transitions. [2024-09-12 23:02:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 23:02:44,726 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 69 [2024-09-12 23:02:44,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:44,727 INFO L225 Difference]: With dead ends: 226 [2024-09-12 23:02:44,727 INFO L226 Difference]: Without dead ends: 155 [2024-09-12 23:02:44,728 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 145 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 23:02:44,728 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 46 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:44,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 394 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 23:02:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-12 23:02:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 140. [2024-09-12 23:02:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 107 states have internal predecessors, (127), 23 states have call successors, (23), 13 states have call predecessors, (23), 15 states have return successors, (26), 19 states have call predecessors, (26), 19 states have call successors, (26) [2024-09-12 23:02:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2024-09-12 23:02:44,772 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 69 [2024-09-12 23:02:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:44,772 INFO L474 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2024-09-12 23:02:44,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-12 23:02:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2024-09-12 23:02:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 23:02:44,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:44,773 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-12 23:02:44,786 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 23:02:44,973 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:44,974 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:44,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1625787306, now seen corresponding path program 9 times [2024-09-12 23:02:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:44,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324308706] [2024-09-12 23:02:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:44,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 23:02:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 23:02:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 23:02:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 23:02:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 23:02:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 23:02:45,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324308706] [2024-09-12 23:02:45,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324308706] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:45,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350004541] [2024-09-12 23:02:45,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 23:02:45,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:45,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:45,152 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 23:02:45,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 23:02:45,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:45,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 23:02:45,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 23:02:45,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 23:02:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350004541] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:45,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 23:02:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 11] total 30 [2024-09-12 23:02:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594287246] [2024-09-12 23:02:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:02:45,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 23:02:45,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 23:02:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-09-12 23:02:45,721 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 23:02:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:45,937 INFO L93 Difference]: Finished difference Result 202 states and 260 transitions. [2024-09-12 23:02:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 23:02:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 69 [2024-09-12 23:02:45,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:45,939 INFO L225 Difference]: With dead ends: 202 [2024-09-12 23:02:45,939 INFO L226 Difference]: Without dead ends: 128 [2024-09-12 23:02:45,940 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-09-12 23:02:45,940 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:45,940 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 347 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 23:02:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-12 23:02:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-12 23:02:45,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 99 states have internal predecessors, (118), 20 states have call successors, (20), 13 states have call predecessors, (20), 14 states have return successors, (22), 15 states have call predecessors, (22), 16 states have call successors, (22) [2024-09-12 23:02:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2024-09-12 23:02:45,989 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 69 [2024-09-12 23:02:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:45,989 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2024-09-12 23:02:45,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 23:02:45,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2024-09-12 23:02:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 23:02:45,990 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:45,990 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-09-12 23:02:46,002 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 23:02:46,190 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:46,191 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:46,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:46,191 INFO L85 PathProgramCache]: Analyzing trace with hash -49185955, now seen corresponding path program 2 times [2024-09-12 23:02:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:46,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193520140] [2024-09-12 23:02:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:02:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:02:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:02:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 23:02:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 23:02:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 23:02:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193520140] [2024-09-12 23:02:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193520140] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395525996] [2024-09-12 23:02:46,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 23:02:46,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:46,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:46,367 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:46,368 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 23:02:46,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 23:02:46,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:46,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 23:02:46,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 23:02:46,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 23:02:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395525996] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:02:47,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:02:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 20] total 39 [2024-09-12 23:02:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256272349] [2024-09-12 23:02:47,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:02:47,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 23:02:47,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 23:02:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 23:02:47,339 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand has 39 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 23:02:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:48,786 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2024-09-12 23:02:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 23:02:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 70 [2024-09-12 23:02:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:48,788 INFO L225 Difference]: With dead ends: 223 [2024-09-12 23:02:48,788 INFO L226 Difference]: Without dead ends: 206 [2024-09-12 23:02:48,789 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=522, Invalid=4880, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 23:02:48,789 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 80 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:48,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 466 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 23:02:48,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-09-12 23:02:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 153. [2024-09-12 23:02:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 123 states have internal predecessors, (151), 21 states have call successors, (21), 13 states have call predecessors, (21), 16 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) [2024-09-12 23:02:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 196 transitions. [2024-09-12 23:02:48,848 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 196 transitions. Word has length 70 [2024-09-12 23:02:48,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:48,848 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 196 transitions. [2024-09-12 23:02:48,848 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 2.676470588235294) internal successors, (91), 34 states have internal predecessors, (91), 7 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 23:02:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 196 transitions. [2024-09-12 23:02:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 23:02:48,849 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:48,849 INFO L216 NwaCegarLoop]: trace histogram [3, 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] [2024-09-12 23:02:48,862 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 23:02:49,049 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 23:02:49,050 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:49,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1576986590, now seen corresponding path program 3 times [2024-09-12 23:02:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:49,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307131349] [2024-09-12 23:02:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:49,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:02:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:02:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:02:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 23:02:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 23:02:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 23:02:49,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307131349] [2024-09-12 23:02:49,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307131349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345263531] [2024-09-12 23:02:49,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 23:02:49,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:49,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:49,227 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:49,228 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 23:02:49,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 23:02:49,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:49,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 23:02:49,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 23:02:50,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 23:02:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345263531] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:02:50,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:02:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 38 [2024-09-12 23:02:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5017112] [2024-09-12 23:02:50,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:02:50,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 23:02:50,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 23:02:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 23:02:50,591 INFO L87 Difference]: Start difference. First operand 153 states and 196 transitions. Second operand has 38 states, 32 states have (on average 2.5625) internal successors, (82), 35 states have internal predecessors, (82), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-12 23:02:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:51,834 INFO L93 Difference]: Finished difference Result 195 states and 262 transitions. [2024-09-12 23:02:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 23:02:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 2.5625) internal successors, (82), 35 states have internal predecessors, (82), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 70 [2024-09-12 23:02:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:51,836 INFO L225 Difference]: With dead ends: 195 [2024-09-12 23:02:51,836 INFO L226 Difference]: Without dead ends: 152 [2024-09-12 23:02:51,837 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=3134, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 23:02:51,838 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:51,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 535 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 23:02:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-12 23:02:51,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2024-09-12 23:02:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 112 states have internal predecessors, (131), 23 states have call successors, (23), 13 states have call predecessors, (23), 15 states have return successors, (24), 17 states have call predecessors, (24), 19 states have call successors, (24) [2024-09-12 23:02:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 178 transitions. [2024-09-12 23:02:51,891 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 178 transitions. Word has length 70 [2024-09-12 23:02:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:51,891 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 178 transitions. [2024-09-12 23:02:51,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 2.5625) internal successors, (82), 35 states have internal predecessors, (82), 7 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-12 23:02:51,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 178 transitions. [2024-09-12 23:02:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 23:02:51,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:51,892 INFO L216 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-09-12 23:02:51,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 23:02:52,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 23:02:52,095 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 462364323, now seen corresponding path program 4 times [2024-09-12 23:02:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040836728] [2024-09-12 23:02:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:02:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:02:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:02:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 23:02:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 23:02:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 23:02:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040836728] [2024-09-12 23:02:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040836728] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527338305] [2024-09-12 23:02:52,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 23:02:52,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:52,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:52,283 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:52,284 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 23:02:52,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 23:02:52,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:52,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 23:02:52,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 23:02:52,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 23:02:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 23:02:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527338305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 23:02:52,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 23:02:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 25 [2024-09-12 23:02:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690869596] [2024-09-12 23:02:52,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 23:02:52,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 23:02:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:02:52,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 23:02:52,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-09-12 23:02:52,662 INFO L87 Difference]: Start difference. First operand 143 states and 178 transitions. Second operand has 25 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 23:02:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:02:53,051 INFO L93 Difference]: Finished difference Result 210 states and 269 transitions. [2024-09-12 23:02:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 23:02:53,051 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 70 [2024-09-12 23:02:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:02:53,053 INFO L225 Difference]: With dead ends: 210 [2024-09-12 23:02:53,053 INFO L226 Difference]: Without dead ends: 160 [2024-09-12 23:02:53,053 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 23:02:53,054 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:02:53,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 304 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 23:02:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-12 23:02:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2024-09-12 23:02:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.2743362831858407) internal successors, (144), 123 states have internal predecessors, (144), 24 states have call successors, (24), 13 states have call predecessors, (24), 16 states have return successors, (27), 17 states have call predecessors, (27), 20 states have call successors, (27) [2024-09-12 23:02:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 195 transitions. [2024-09-12 23:02:53,109 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 195 transitions. Word has length 70 [2024-09-12 23:02:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:02:53,109 INFO L474 AbstractCegarLoop]: Abstraction has 154 states and 195 transitions. [2024-09-12 23:02:53,109 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 24 states have internal predecessors, (71), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 23:02:53,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 195 transitions. [2024-09-12 23:02:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 23:02:53,110 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:02:53,110 INFO L216 NwaCegarLoop]: trace histogram [4, 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] [2024-09-12 23:02:53,122 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 23:02:53,310 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:53,311 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:02:53,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:02:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash -799187227, now seen corresponding path program 5 times [2024-09-12 23:02:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:02:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057382276] [2024-09-12 23:02:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:02:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:02:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:02:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:02:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 23:02:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 23:02:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 23:02:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 23:02:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 23:02:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:53,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 23:02:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:02:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 23:02:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:02:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057382276] [2024-09-12 23:02:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057382276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 23:02:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063665212] [2024-09-12 23:02:54,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 23:02:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:02:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:02:54,144 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:02:54,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 23:02:54,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 23:02:54,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 23:02:54,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-12 23:02:54,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:02:54,710 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 [2024-09-12 23:02:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-12 23:02:54,861 INFO L349 Elim1Store]: treesize reduction 48, result has 40.0 percent of original size [2024-09-12 23:02:54,861 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 2 case distinctions, treesize of input 55 treesize of output 47 [2024-09-12 23:02:54,890 INFO L349 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2024-09-12 23:02:54,890 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 2 case distinctions, treesize of input 32 treesize of output 25 [2024-09-12 23:02:55,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-12 23:02:55,673 INFO L349 Elim1Store]: treesize reduction 152, result has 45.5 percent of original size [2024-09-12 23:02:55,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 206 treesize of output 263 [2024-09-12 23:10:09,954 WARN L293 SmtUtils]: Spent 7.11m on a formula simplification. DAG size of input: 4203 DAG size of output: 3806 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-09-12 23:10:09,956 INFO L349 Elim1Store]: treesize reduction 2562, result has 78.7 percent of original size [2024-09-12 23:10:09,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 43 select indices, 43 select index equivalence classes, 0 disjoint index pairs (out of 903 index pairs), introduced 43 new quantified variables, introduced 947 case distinctions, treesize of input 1631 treesize of output 10560 Killed by 15