./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.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 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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/recursified_nla-digbench/recursified_hard2.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 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 20:02:38,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:02:38,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:02:38,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:02:38,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:02:38,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:02:38,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:02:38,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:02:38,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:02:38,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:02:38,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:02:38,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:02:38,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:02:38,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:02:38,798 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:02:38,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:02:38,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:02:38,800 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:02:38,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:02:38,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:02:38,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:02:38,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:02:38,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:02:38,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:02:38,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:02:38,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:02:38,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:02:38,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:02:38,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:02:38,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:02:38,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:02:38,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:02:38,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:02:38,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:02:38,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:02:38,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:02:38,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:02:38,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:02:38,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:02:38,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:02:38,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:02:38,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:02:38,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8571897e57404ad6e85df2c29745d5b56fa4d168673d3bc7c670c79b03a6c106 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:02:39,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:02:39,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:02:39,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:02:39,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:02:39,179 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:02:39,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2024-09-12 20:02:40,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:02:40,905 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:02:40,906 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_hard2.c [2024-09-12 20:02:40,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3cfc21320/ee8ecb0b7b2e429e877198aad94b3e82/FLAG78838a550 [2024-09-12 20:02:40,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3cfc21320/ee8ecb0b7b2e429e877198aad94b3e82 [2024-09-12 20:02:40,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:02:40,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:02:40,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:02:40,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:02:40,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:02:40,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:02:40" (1/1) ... [2024-09-12 20:02:40,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47230a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:40, skipping insertion in model container [2024-09-12 20:02:40,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:02:40" (1/1) ... [2024-09-12 20:02:40,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:02:41,114 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/recursified_nla-digbench/recursified_hard2.c[1067,1080] [2024-09-12 20:02:41,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:02:41,145 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:02:41,159 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/recursified_nla-digbench/recursified_hard2.c[1067,1080] [2024-09-12 20:02:41,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:02:41,200 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:02:41,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41 WrapperNode [2024-09-12 20:02:41,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:02:41,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:02:41,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:02:41,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:02:41,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,224 INFO L138 Inliner]: procedures = 17, calls = 90, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:02:41,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:02:41,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:02:41,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:02:41,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:02:41,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,268 INFO L175 MemorySlicer]: Split 56 memory accesses to 8 slices as follows [2, 8, 12, 9, 6, 8, 5, 6]. 21 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0]. The 12 writes are split as follows [0, 0, 3, 3, 1, 2, 1, 2]. [2024-09-12 20:02:41,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:02:41,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:02:41,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:02:41,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:02:41,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (1/1) ... [2024-09-12 20:02:41,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:02:41,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:41,323 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 20:02:41,329 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 20:02:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:02:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_50_0 [2024-09-12 20:02:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_50_0 [2024-09-12 20:02:41,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:02:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:02:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:02:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:02:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:02:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:02:41,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:02:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:02:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_37_0 [2024-09-12 20:02:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_37_0 [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:02:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:02:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:02:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:02:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:02:41,501 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:02:41,503 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:02:41,870 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-09-12 20:02:41,870 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:02:41,901 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:02:41,903 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 20:02:41,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:02:41 BoogieIcfgContainer [2024-09-12 20:02:41,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:02:41,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:02:41,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:02:41,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:02:41,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:02:40" (1/3) ... [2024-09-12 20:02:41,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35f25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:02:41, skipping insertion in model container [2024-09-12 20:02:41,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:02:41" (2/3) ... [2024-09-12 20:02:41,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35f25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:02:41, skipping insertion in model container [2024-09-12 20:02:41,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:02:41" (3/3) ... [2024-09-12 20:02:41,911 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard2.c [2024-09-12 20:02:41,944 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:02:41,944 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-09-12 20:02:42,015 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:02:42,023 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;@6564a68f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:02:42,024 INFO L337 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-09-12 20:02:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 75 states have internal predecessors, (79), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 20:02:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 20:02:42,034 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:42,035 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:42,035 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:42,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash 323990214, now seen corresponding path program 1 times [2024-09-12 20:02:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:42,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268104352] [2024-09-12 20:02:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:42,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:02:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268104352] [2024-09-12 20:02:42,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268104352] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:42,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:42,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:42,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645001538] [2024-09-12 20:02:42,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:42,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:42,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:42,687 INFO L87 Difference]: Start difference. First operand has 92 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 75 states have internal predecessors, (79), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:02:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:42,919 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-09-12 20:02:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 20:02:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:42,933 INFO L225 Difference]: With dead ends: 182 [2024-09-12 20:02:42,933 INFO L226 Difference]: Without dead ends: 92 [2024-09-12 20:02:42,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:42,944 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 42 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:42,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 564 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-12 20:02:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-09-12 20:02:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 76 states have internal predecessors, (77), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 20:02:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2024-09-12 20:02:42,996 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 12 [2024-09-12 20:02:42,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:42,996 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2024-09-12 20:02:42,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:02:42,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2024-09-12 20:02:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 20:02:43,003 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:43,003 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:43,003 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:02:43,003 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:43,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash 225252054, now seen corresponding path program 1 times [2024-09-12 20:02:43,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446669755] [2024-09-12 20:02:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:43,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:43,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:02:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446669755] [2024-09-12 20:02:43,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446669755] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:43,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:43,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4823972] [2024-09-12 20:02:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:43,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:43,310 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:02:43,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:43,490 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2024-09-12 20:02:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-09-12 20:02:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:43,492 INFO L225 Difference]: With dead ends: 98 [2024-09-12 20:02:43,492 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 20:02:43,492 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:43,493 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 41 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:43,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 543 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 20:02:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-12 20:02:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 79 states have internal predecessors, (80), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 20:02:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-09-12 20:02:43,512 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 18 [2024-09-12 20:02:43,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:43,513 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-09-12 20:02:43,513 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 20:02:43,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-09-12 20:02:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 20:02:43,514 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:43,514 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:43,514 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:02:43,514 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_37_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:43,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1749920239, now seen corresponding path program 1 times [2024-09-12 20:02:43,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:43,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812140676] [2024-09-12 20:02:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:43,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:43,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625727751] [2024-09-12 20:02:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:43,559 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 20:02:43,560 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 20:02:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:43,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 20:02:43,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:43,768 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 15 treesize of output 1 [2024-09-12 20:02:43,772 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 11 treesize of output 7 [2024-09-12 20:02:43,999 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 7 [2024-09-12 20:02:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:44,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:44,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:44,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812140676] [2024-09-12 20:02:44,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625727751] [2024-09-12 20:02:44,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625727751] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:44,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:44,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:02:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053850721] [2024-09-12 20:02:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:44,032 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:02:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:02:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:02:44,033 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:44,285 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2024-09-12 20:02:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:02:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 20:02:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:44,289 INFO L225 Difference]: With dead ends: 175 [2024-09-12 20:02:44,290 INFO L226 Difference]: Without dead ends: 174 [2024-09-12 20:02:44,294 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:44,295 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:44,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 447 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-09-12 20:02:44,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 145. [2024-09-12 20:02:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 115 states have internal predecessors, (130), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2024-09-12 20:02:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2024-09-12 20:02:44,335 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 21 [2024-09-12 20:02:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:44,336 INFO L474 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2024-09-12 20:02:44,337 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:44,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2024-09-12 20:02:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 20:02:44,338 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:44,338 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:44,356 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 20:02:44,538 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 20:02:44,539 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:44,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1587047328, now seen corresponding path program 1 times [2024-09-12 20:02:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607508926] [2024-09-12 20:02:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:44,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442786718] [2024-09-12 20:02:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:44,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:44,574 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 20:02:44,576 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 20:02:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:44,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:02:44,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:44,699 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 11 treesize of output 7 [2024-09-12 20:02:44,704 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 11 treesize of output 7 [2024-09-12 20:02:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:44,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:44,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:44,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607508926] [2024-09-12 20:02:44,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:44,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442786718] [2024-09-12 20:02:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442786718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:44,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:44,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:02:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832440123] [2024-09-12 20:02:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:44,887 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:02:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:02:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:02:44,888 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:45,133 INFO L93 Difference]: Finished difference Result 174 states and 188 transitions. [2024-09-12 20:02:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:02:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-12 20:02:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:45,136 INFO L225 Difference]: With dead ends: 174 [2024-09-12 20:02:45,136 INFO L226 Difference]: Without dead ends: 173 [2024-09-12 20:02:45,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:45,137 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 93 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:45,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 362 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-12 20:02:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2024-09-12 20:02:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 115 states have internal predecessors, (129), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2024-09-12 20:02:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2024-09-12 20:02:45,174 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 22 [2024-09-12 20:02:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:45,175 INFO L474 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2024-09-12 20:02:45,175 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:45,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2024-09-12 20:02:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 20:02:45,176 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:45,176 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:45,197 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 20:02:45,376 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 20:02:45,377 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:45,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1055750906, now seen corresponding path program 1 times [2024-09-12 20:02:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:45,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396021702] [2024-09-12 20:02:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:45,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850411274] [2024-09-12 20:02:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:45,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:45,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:45,414 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 20:02:45,416 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 20:02:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:45,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 20:02:45,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:45,521 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 15 treesize of output 11 [2024-09-12 20:02:45,527 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 11 treesize of output 7 [2024-09-12 20:02:45,536 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 11 treesize of output 7 [2024-09-12 20:02:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:45,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:02:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396021702] [2024-09-12 20:02:45,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850411274] [2024-09-12 20:02:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850411274] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:45,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:45,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-12 20:02:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698958315] [2024-09-12 20:02:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:45,938 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:45,939 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:46,194 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2024-09-12 20:02:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:46,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-09-12 20:02:46,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:46,196 INFO L225 Difference]: With dead ends: 155 [2024-09-12 20:02:46,196 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 20:02:46,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-12 20:02:46,197 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 26 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:46,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 559 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 20:02:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2024-09-12 20:02:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 91 states have (on average 1.4505494505494505) internal successors, (132), 118 states have internal predecessors, (132), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2024-09-12 20:02:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2024-09-12 20:02:46,240 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 26 [2024-09-12 20:02:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:46,240 INFO L474 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2024-09-12 20:02:46,240 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:02:46,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2024-09-12 20:02:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 20:02:46,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:46,241 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:46,259 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 20:02:46,442 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 20:02:46,443 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_37_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:46,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1135177428, now seen corresponding path program 1 times [2024-09-12 20:02:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459219194] [2024-09-12 20:02:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:02:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:02:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:46,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459219194] [2024-09-12 20:02:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459219194] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:46,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:46,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:46,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441782436] [2024-09-12 20:02:46,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:46,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:46,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:46,655 INFO L87 Difference]: Start difference. First operand 149 states and 173 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:46,773 INFO L93 Difference]: Finished difference Result 153 states and 177 transitions. [2024-09-12 20:02:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:02:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-09-12 20:02:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:46,775 INFO L225 Difference]: With dead ends: 153 [2024-09-12 20:02:46,775 INFO L226 Difference]: Without dead ends: 151 [2024-09-12 20:02:46,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:46,776 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 16 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:46,776 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 406 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-09-12 20:02:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-09-12 20:02:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 120 states have internal predecessors, (134), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2024-09-12 20:02:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2024-09-12 20:02:46,806 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 30 [2024-09-12 20:02:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:46,806 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2024-09-12 20:02:46,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:46,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2024-09-12 20:02:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 20:02:46,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:46,807 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:46,808 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 20:02:46,808 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:46,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash -16181002, now seen corresponding path program 1 times [2024-09-12 20:02:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655756896] [2024-09-12 20:02:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:02:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:02:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:46,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655756896] [2024-09-12 20:02:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655756896] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:02:46,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308546876] [2024-09-12 20:02:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:46,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:02:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:02:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:02:46,974 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:47,085 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2024-09-12 20:02:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:02:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-09-12 20:02:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:47,087 INFO L225 Difference]: With dead ends: 155 [2024-09-12 20:02:47,087 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 20:02:47,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:47,088 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 18 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:47,088 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 417 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 20:02:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-09-12 20:02:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 95 states have (on average 1.431578947368421) internal successors, (136), 122 states have internal predecessors, (136), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (20), 19 states have call predecessors, (20), 18 states have call successors, (20) [2024-09-12 20:02:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2024-09-12 20:02:47,113 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 32 [2024-09-12 20:02:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:47,113 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2024-09-12 20:02:47,113 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 20:02:47,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2024-09-12 20:02:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:02:47,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:47,115 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:47,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 20:02:47,115 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_40_to_50_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1560626672, now seen corresponding path program 1 times [2024-09-12 20:02:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618205006] [2024-09-12 20:02:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:47,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177948105] [2024-09-12 20:02:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:47,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:47,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:47,137 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 20:02:47,138 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 20:02:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:47,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:02:47,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:47,271 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 11 treesize of output 7 [2024-09-12 20:02:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:47,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618205006] [2024-09-12 20:02:47,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:47,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177948105] [2024-09-12 20:02:47,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177948105] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:47,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:47,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:02:47,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20668360] [2024-09-12 20:02:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:47,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:02:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:02:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:02:47,370 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:47,560 INFO L93 Difference]: Finished difference Result 215 states and 249 transitions. [2024-09-12 20:02:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:02:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2024-09-12 20:02:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:47,563 INFO L225 Difference]: With dead ends: 215 [2024-09-12 20:02:47,563 INFO L226 Difference]: Without dead ends: 213 [2024-09-12 20:02:47,563 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:47,564 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 105 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:47,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 392 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:02:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-09-12 20:02:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 188. [2024-09-12 20:02:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.4426229508196722) internal successors, (176), 150 states have internal predecessors, (176), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2024-09-12 20:02:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 231 transitions. [2024-09-12 20:02:47,610 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 231 transitions. Word has length 35 [2024-09-12 20:02:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:47,611 INFO L474 AbstractCegarLoop]: Abstraction has 188 states and 231 transitions. [2024-09-12 20:02:47,611 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:47,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 231 transitions. [2024-09-12 20:02:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 20:02:47,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:47,613 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:47,630 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:47,817 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:47,818 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_40_to_50_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:47,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash -818643758, now seen corresponding path program 1 times [2024-09-12 20:02:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604395314] [2024-09-12 20:02:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:47,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756168691] [2024-09-12 20:02:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:47,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:47,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:47,841 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 20:02:47,843 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 20:02:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:47,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 20:02:47,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:47,964 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 11 treesize of output 7 [2024-09-12 20:02:47,975 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 15 treesize of output 1 [2024-09-12 20:02:48,164 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 17 treesize of output 9 [2024-09-12 20:02:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:48,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604395314] [2024-09-12 20:02:48,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:48,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756168691] [2024-09-12 20:02:48,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756168691] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:48,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:48,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:02:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583424392] [2024-09-12 20:02:48,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:48,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:02:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:48,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:02:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:02:48,180 INFO L87 Difference]: Start difference. First operand 188 states and 231 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:52,395 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 20:02:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:52,452 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2024-09-12 20:02:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:02:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2024-09-12 20:02:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:52,454 INFO L225 Difference]: With dead ends: 209 [2024-09-12 20:02:52,454 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 20:02:52,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:52,455 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 126 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:52,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 380 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-09-12 20:02:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 20:02:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2024-09-12 20:02:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 150 states have internal predecessors, (174), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2024-09-12 20:02:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2024-09-12 20:02:52,500 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 37 [2024-09-12 20:02:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:52,500 INFO L474 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2024-09-12 20:02:52,500 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2024-09-12 20:02:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 20:02:52,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:52,503 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:52,518 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 20:02:52,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:52,705 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_40_to_50_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:52,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash 391847336, now seen corresponding path program 1 times [2024-09-12 20:02:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:52,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344410843] [2024-09-12 20:02:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:02:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:02:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:02:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:02:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:02:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:53,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344410843] [2024-09-12 20:02:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344410843] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 20:02:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200910156] [2024-09-12 20:02:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:53,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:02:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:02:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:02:53,303 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:53,789 INFO L93 Difference]: Finished difference Result 230 states and 274 transitions. [2024-09-12 20:02:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:02:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2024-09-12 20:02:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:53,792 INFO L225 Difference]: With dead ends: 230 [2024-09-12 20:02:53,792 INFO L226 Difference]: Without dead ends: 229 [2024-09-12 20:02:53,792 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:02:53,793 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 138 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:53,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 503 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-09-12 20:02:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 215. [2024-09-12 20:02:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 142 states have (on average 1.4154929577464788) internal successors, (201), 171 states have internal predecessors, (201), 29 states have call successors, (29), 16 states have call predecessors, (29), 19 states have return successors, (38), 27 states have call predecessors, (38), 25 states have call successors, (38) [2024-09-12 20:02:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 268 transitions. [2024-09-12 20:02:53,842 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 268 transitions. Word has length 38 [2024-09-12 20:02:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:53,843 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 268 transitions. [2024-09-12 20:02:53,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 20:02:53,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 268 transitions. [2024-09-12 20:02:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 20:02:53,844 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:53,844 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:53,844 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 20:02:53,844 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:53,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1811177832, now seen corresponding path program 1 times [2024-09-12 20:02:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126008633] [2024-09-12 20:02:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:53,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996826089] [2024-09-12 20:02:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:53,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:53,867 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 20:02:53,869 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 20:02:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:53,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-09-12 20:02:53,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:53,993 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 15 treesize of output 11 [2024-09-12 20:02:53,999 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 15 treesize of output 1 [2024-09-12 20:02:54,001 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 11 treesize of output 7 [2024-09-12 20:02:54,178 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 19 treesize of output 11 [2024-09-12 20:02:54,193 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 7 [2024-09-12 20:02:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:54,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:54,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126008633] [2024-09-12 20:02:54,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:54,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996826089] [2024-09-12 20:02:54,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996826089] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:54,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:54,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 10 [2024-09-12 20:02:54,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091840872] [2024-09-12 20:02:54,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:54,367 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:54,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:54,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:02:54,368 INFO L87 Difference]: Start difference. First operand 215 states and 268 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:02:54,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:54,654 INFO L93 Difference]: Finished difference Result 239 states and 285 transitions. [2024-09-12 20:02:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:02:54,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-09-12 20:02:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:54,656 INFO L225 Difference]: With dead ends: 239 [2024-09-12 20:02:54,656 INFO L226 Difference]: Without dead ends: 237 [2024-09-12 20:02:54,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:02:54,657 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 64 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:54,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 614 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-09-12 20:02:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 225. [2024-09-12 20:02:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 149 states have (on average 1.395973154362416) internal successors, (208), 178 states have internal predecessors, (208), 29 states have call successors, (29), 18 states have call predecessors, (29), 22 states have return successors, (40), 28 states have call predecessors, (40), 25 states have call successors, (40) [2024-09-12 20:02:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 277 transitions. [2024-09-12 20:02:54,710 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 277 transitions. Word has length 42 [2024-09-12 20:02:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:54,710 INFO L474 AbstractCegarLoop]: Abstraction has 225 states and 277 transitions. [2024-09-12 20:02:54,711 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 20:02:54,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 277 transitions. [2024-09-12 20:02:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:02:54,712 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:54,712 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:54,730 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 20:02:54,912 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 20:02:54,913 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_40_to_50_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 880233221, now seen corresponding path program 1 times [2024-09-12 20:02:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262009298] [2024-09-12 20:02:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838313526] [2024-09-12 20:02:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:54,938 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 20:02:54,943 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 20:02:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:55,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 20:02:55,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:55,077 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 11 treesize of output 7 [2024-09-12 20:02:55,082 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 15 treesize of output 1 [2024-09-12 20:02:55,287 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 7 [2024-09-12 20:02:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:55,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:55,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:55,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262009298] [2024-09-12 20:02:55,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:55,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838313526] [2024-09-12 20:02:55,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838313526] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:55,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:55,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531788678] [2024-09-12 20:02:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:55,300 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:55,301 INFO L87 Difference]: Start difference. First operand 225 states and 277 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:55,656 INFO L93 Difference]: Finished difference Result 241 states and 286 transitions. [2024-09-12 20:02:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:02:55,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2024-09-12 20:02:55,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:55,659 INFO L225 Difference]: With dead ends: 241 [2024-09-12 20:02:55,659 INFO L226 Difference]: Without dead ends: 240 [2024-09-12 20:02:55,659 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:55,659 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 233 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 41 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:55,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 288 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 182 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:02:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-12 20:02:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 225. [2024-09-12 20:02:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 149 states have (on average 1.389261744966443) internal successors, (207), 178 states have internal predecessors, (207), 29 states have call successors, (29), 18 states have call predecessors, (29), 22 states have return successors, (40), 28 states have call predecessors, (40), 25 states have call successors, (40) [2024-09-12 20:02:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 276 transitions. [2024-09-12 20:02:55,728 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 276 transitions. Word has length 45 [2024-09-12 20:02:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:55,728 INFO L474 AbstractCegarLoop]: Abstraction has 225 states and 276 transitions. [2024-09-12 20:02:55,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:55,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 276 transitions. [2024-09-12 20:02:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:02:55,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:55,729 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:02:55,746 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 20:02:55,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:55,934 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_40_to_50_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:55,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1517426139, now seen corresponding path program 1 times [2024-09-12 20:02:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256197977] [2024-09-12 20:02:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:55,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526391213] [2024-09-12 20:02:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:55,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:55,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:55,953 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 20:02:55,957 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 20:02:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:56,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 20:02:56,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:56,103 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 11 treesize of output 7 [2024-09-12 20:02:56,107 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 11 treesize of output 7 [2024-09-12 20:02:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:02:56,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:02:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256197977] [2024-09-12 20:02:56,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526391213] [2024-09-12 20:02:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526391213] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:02:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:02:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:02:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694517315] [2024-09-12 20:02:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:02:56,286 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:02:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:02:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:02:56,287 INFO L87 Difference]: Start difference. First operand 225 states and 276 transitions. Second operand has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:02:56,689 INFO L93 Difference]: Finished difference Result 240 states and 285 transitions. [2024-09-12 20:02:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:02:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2024-09-12 20:02:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:02:56,691 INFO L225 Difference]: With dead ends: 240 [2024-09-12 20:02:56,692 INFO L226 Difference]: Without dead ends: 239 [2024-09-12 20:02:56,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:56,692 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 171 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:02:56,692 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 329 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 197 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:02:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-09-12 20:02:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 225. [2024-09-12 20:02:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 149 states have (on average 1.3825503355704698) internal successors, (206), 178 states have internal predecessors, (206), 29 states have call successors, (29), 18 states have call predecessors, (29), 22 states have return successors, (40), 28 states have call predecessors, (40), 25 states have call successors, (40) [2024-09-12 20:02:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 275 transitions. [2024-09-12 20:02:56,770 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 275 transitions. Word has length 46 [2024-09-12 20:02:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:02:56,771 INFO L474 AbstractCegarLoop]: Abstraction has 225 states and 275 transitions. [2024-09-12 20:02:56,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:02:56,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 275 transitions. [2024-09-12 20:02:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 20:02:56,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:02:56,773 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-09-12 20:02:56,790 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 20:02:56,973 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:56,974 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_30_to_37_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:02:56,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:02:56,974 INFO L85 PathProgramCache]: Analyzing trace with hash -946669718, now seen corresponding path program 1 times [2024-09-12 20:02:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:02:56,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43338525] [2024-09-12 20:02:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:02:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:02:56,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192296921] [2024-09-12 20:02:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:02:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:02:56,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:02:56,995 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 20:02:56,999 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 20:02:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:02:57,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 20:02:57,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:02:57,126 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 15 treesize of output 1 [2024-09-12 20:02:57,131 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 11 treesize of output 7 [2024-09-12 20:02:57,301 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 21 treesize of output 13 [2024-09-12 20:02:57,572 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 7 [2024-09-12 20:02:57,576 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 30 treesize of output 18 [2024-09-12 20:02:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:02:57,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:02:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:02:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43338525] [2024-09-12 20:02:57,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:02:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192296921] [2024-09-12 20:02:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192296921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:02:57,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:02:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:02:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149761840] [2024-09-12 20:02:57,668 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:02:57,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:02:57,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:02:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:02:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:02:57,670 INFO L87 Difference]: Start difference. First operand 225 states and 275 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:01,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:06,072 WARN L539 Checker$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 20:03:10,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:03:14,150 WARN L539 Checker$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 20:03:18,311 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 20:03:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:18,336 INFO L93 Difference]: Finished difference Result 322 states and 375 transitions. [2024-09-12 20:03:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:03:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2024-09-12 20:03:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:18,340 INFO L225 Difference]: With dead ends: 322 [2024-09-12 20:03:18,340 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 20:03:18,340 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:03:18,341 INFO L434 NwaCegarLoop]: 131 mSDtfsCounter, 137 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:18,341 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 755 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2024-09-12 20:03:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 20:03:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 281. [2024-09-12 20:03:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 219 states have internal predecessors, (257), 38 states have call successors, (38), 24 states have call predecessors, (38), 29 states have return successors, (53), 37 states have call predecessors, (53), 33 states have call successors, (53) [2024-09-12 20:03:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 348 transitions. [2024-09-12 20:03:18,448 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 348 transitions. Word has length 49 [2024-09-12 20:03:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:18,448 INFO L474 AbstractCegarLoop]: Abstraction has 281 states and 348 transitions. [2024-09-12 20:03:18,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:18,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:18,449 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 348 transitions. [2024-09-12 20:03:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:03:18,450 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:18,450 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:18,468 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 20:03:18,651 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 20:03:18,651 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:18,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash 95825417, now seen corresponding path program 1 times [2024-09-12 20:03:18,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:18,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095349086] [2024-09-12 20:03:18,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:18,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:18,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649353759] [2024-09-12 20:03:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:18,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:18,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:18,672 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 20:03:18,678 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 20:03:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:18,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-12 20:03:18,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:18,819 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 11 treesize of output 7 [2024-09-12 20:03:18,824 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 11 treesize of output 7 [2024-09-12 20:03:18,829 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 11 treesize of output 7 [2024-09-12 20:03:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 20:03:19,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095349086] [2024-09-12 20:03:20,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649353759] [2024-09-12 20:03:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649353759] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:20,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:20,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 20:03:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180783233] [2024-09-12 20:03:20,126 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:20,126 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:03:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:03:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-09-12 20:03:20,127 INFO L87 Difference]: Start difference. First operand 281 states and 348 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:03:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:20,747 INFO L93 Difference]: Finished difference Result 297 states and 358 transitions. [2024-09-12 20:03:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:03:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 50 [2024-09-12 20:03:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:20,750 INFO L225 Difference]: With dead ends: 297 [2024-09-12 20:03:20,750 INFO L226 Difference]: Without dead ends: 295 [2024-09-12 20:03:20,750 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:03:20,751 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 191 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 39 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:20,751 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 437 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 303 Invalid, 5 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:03:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-09-12 20:03:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 285. [2024-09-12 20:03:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 192 states have (on average 1.3541666666666667) internal successors, (260), 222 states have internal predecessors, (260), 38 states have call successors, (38), 25 states have call predecessors, (38), 30 states have return successors, (53), 37 states have call predecessors, (53), 33 states have call successors, (53) [2024-09-12 20:03:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 351 transitions. [2024-09-12 20:03:20,861 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 351 transitions. Word has length 50 [2024-09-12 20:03:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:20,862 INFO L474 AbstractCegarLoop]: Abstraction has 285 states and 351 transitions. [2024-09-12 20:03:20,862 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 5 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 20:03:20,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 351 transitions. [2024-09-12 20:03:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 20:03:20,863 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:20,863 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-09-12 20:03:20,877 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:21,064 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 20:03:21,064 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:21,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 718009925, now seen corresponding path program 1 times [2024-09-12 20:03:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149154451] [2024-09-12 20:03:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:21,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675592814] [2024-09-12 20:03:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:21,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:21,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:21,088 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 20:03:21,092 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 20:03:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:21,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 20:03:21,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:21,235 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 11 treesize of output 7 [2024-09-12 20:03:21,240 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 11 treesize of output 7 [2024-09-12 20:03:21,458 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 19 treesize of output 11 [2024-09-12 20:03:21,634 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:21,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149154451] [2024-09-12 20:03:21,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:21,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675592814] [2024-09-12 20:03:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675592814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:21,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:03:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464652106] [2024-09-12 20:03:21,808 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:21,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:03:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:03:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:03:21,809 INFO L87 Difference]: Start difference. First operand 285 states and 351 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:22,362 INFO L93 Difference]: Finished difference Result 325 states and 377 transitions. [2024-09-12 20:03:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:03:22,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2024-09-12 20:03:22,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:22,365 INFO L225 Difference]: With dead ends: 325 [2024-09-12 20:03:22,365 INFO L226 Difference]: Without dead ends: 324 [2024-09-12 20:03:22,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-09-12 20:03:22,366 INFO L434 NwaCegarLoop]: 130 mSDtfsCounter, 149 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:22,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 723 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:03:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-09-12 20:03:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 285. [2024-09-12 20:03:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 222 states have internal predecessors, (259), 38 states have call successors, (38), 25 states have call predecessors, (38), 30 states have return successors, (53), 37 states have call predecessors, (53), 33 states have call successors, (53) [2024-09-12 20:03:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 350 transitions. [2024-09-12 20:03:22,477 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 350 transitions. Word has length 50 [2024-09-12 20:03:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:22,477 INFO L474 AbstractCegarLoop]: Abstraction has 285 states and 350 transitions. [2024-09-12 20:03:22,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:22,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 350 transitions. [2024-09-12 20:03:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 20:03:22,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:22,478 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-09-12 20:03:22,497 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 20:03:22,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 20:03:22,679 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1543072875, now seen corresponding path program 1 times [2024-09-12 20:03:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989600906] [2024-09-12 20:03:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:22,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375564197] [2024-09-12 20:03:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:22,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:22,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:22,701 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 20:03:22,702 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 20:03:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:22,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-12 20:03:22,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:22,845 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 11 treesize of output 7 [2024-09-12 20:03:22,850 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 11 treesize of output 7 [2024-09-12 20:03:22,855 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 11 treesize of output 7 [2024-09-12 20:03:23,132 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 19 treesize of output 11 [2024-09-12 20:03:23,169 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 19 treesize of output 11 [2024-09-12 20:03:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:23,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 20:03:23,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989600906] [2024-09-12 20:03:23,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375564197] [2024-09-12 20:03:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375564197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:23,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:03:23,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 20 [2024-09-12 20:03:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815971996] [2024-09-12 20:03:23,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:23,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 20:03:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 20:03:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:03:23,706 INFO L87 Difference]: Start difference. First operand 285 states and 350 transitions. Second operand has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:03:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:24,876 INFO L93 Difference]: Finished difference Result 324 states and 376 transitions. [2024-09-12 20:03:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 20:03:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2024-09-12 20:03:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:24,879 INFO L225 Difference]: With dead ends: 324 [2024-09-12 20:03:24,879 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 20:03:24,880 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 20:03:24,880 INFO L434 NwaCegarLoop]: 113 mSDtfsCounter, 168 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:24,881 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1135 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:03:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 20:03:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 297. [2024-09-12 20:03:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 201 states have (on average 1.3333333333333333) internal successors, (268), 231 states have internal predecessors, (268), 38 states have call successors, (38), 27 states have call predecessors, (38), 33 states have return successors, (55), 38 states have call predecessors, (55), 33 states have call successors, (55) [2024-09-12 20:03:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 361 transitions. [2024-09-12 20:03:25,003 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 361 transitions. Word has length 54 [2024-09-12 20:03:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:25,003 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 361 transitions. [2024-09-12 20:03:25,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 16 states have internal predecessors, (48), 8 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:03:25,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 361 transitions. [2024-09-12 20:03:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 20:03:25,004 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:25,005 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:25,021 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 20:03:25,208 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 20:03:25,208 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_40_to_50_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:25,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -864647920, now seen corresponding path program 1 times [2024-09-12 20:03:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381097696] [2024-09-12 20:03:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:03:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:03:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:03:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:03:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 20:03:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 20:03:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 20:03:25,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:25,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381097696] [2024-09-12 20:03:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381097696] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:03:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:03:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:03:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357714967] [2024-09-12 20:03:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:03:25,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:03:25,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:03:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:03:25,431 INFO L87 Difference]: Start difference. First operand 297 states and 361 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 20:03:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:25,814 INFO L93 Difference]: Finished difference Result 378 states and 445 transitions. [2024-09-12 20:03:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:03:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 54 [2024-09-12 20:03:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:25,817 INFO L225 Difference]: With dead ends: 378 [2024-09-12 20:03:25,817 INFO L226 Difference]: Without dead ends: 278 [2024-09-12 20:03:25,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:03:25,819 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 134 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:25,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 343 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:03:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-09-12 20:03:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2024-09-12 20:03:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 211 states have internal predecessors, (240), 35 states have call successors, (35), 26 states have call predecessors, (35), 30 states have return successors, (43), 34 states have call predecessors, (43), 30 states have call successors, (43) [2024-09-12 20:03:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 318 transitions. [2024-09-12 20:03:25,936 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 318 transitions. Word has length 54 [2024-09-12 20:03:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:25,936 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 318 transitions. [2024-09-12 20:03:25,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-12 20:03:25,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 318 transitions. [2024-09-12 20:03:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 20:03:25,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:25,938 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:25,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-12 20:03:25,938 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:25,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1807346068, now seen corresponding path program 1 times [2024-09-12 20:03:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799444622] [2024-09-12 20:03:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:25,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264804185] [2024-09-12 20:03:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:25,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:25,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:25,967 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 20:03:25,968 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 20:03:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:26,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 20:03:26,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:26,121 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 11 treesize of output 7 [2024-09-12 20:03:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:26,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799444622] [2024-09-12 20:03:27,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264804185] [2024-09-12 20:03:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264804185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:27,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:27,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-09-12 20:03:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366377035] [2024-09-12 20:03:27,625 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:27,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:03:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:03:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:03:27,626 INFO L87 Difference]: Start difference. First operand 272 states and 318 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:27,991 INFO L93 Difference]: Finished difference Result 296 states and 333 transitions. [2024-09-12 20:03:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:03:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2024-09-12 20:03:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:27,994 INFO L225 Difference]: With dead ends: 296 [2024-09-12 20:03:27,994 INFO L226 Difference]: Without dead ends: 294 [2024-09-12 20:03:27,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:03:27,995 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 135 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:27,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 183 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:03:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-09-12 20:03:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 273. [2024-09-12 20:03:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 182 states have (on average 1.2857142857142858) internal successors, (234), 212 states have internal predecessors, (234), 36 states have call successors, (36), 26 states have call predecessors, (36), 30 states have return successors, (45), 35 states have call predecessors, (45), 31 states have call successors, (45) [2024-09-12 20:03:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 315 transitions. [2024-09-12 20:03:28,142 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 315 transitions. Word has length 57 [2024-09-12 20:03:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:28,142 INFO L474 AbstractCegarLoop]: Abstraction has 273 states and 315 transitions. [2024-09-12 20:03:28,143 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:28,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 315 transitions. [2024-09-12 20:03:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 20:03:28,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:28,144 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:28,169 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:28,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:28,344 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:28,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1692782578, now seen corresponding path program 1 times [2024-09-12 20:03:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614512826] [2024-09-12 20:03:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:28,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122572173] [2024-09-12 20:03:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:28,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:28,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:28,370 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 20:03:28,371 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 20:03:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:28,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 20:03:28,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:28,508 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 11 treesize of output 7 [2024-09-12 20:03:28,511 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 11 treesize of output 7 [2024-09-12 20:03:28,518 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 15 treesize of output 1 [2024-09-12 20:03:28,792 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 17 treesize of output 9 [2024-09-12 20:03:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:28,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:29,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614512826] [2024-09-12 20:03:29,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122572173] [2024-09-12 20:03:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122572173] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:29,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-09-12 20:03:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196202392] [2024-09-12 20:03:29,213 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:29,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:03:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:03:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:03:29,214 INFO L87 Difference]: Start difference. First operand 273 states and 315 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:33,650 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 20:03:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:33,746 INFO L93 Difference]: Finished difference Result 291 states and 323 transitions. [2024-09-12 20:03:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:03:33,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 59 [2024-09-12 20:03:33,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:33,748 INFO L225 Difference]: With dead ends: 291 [2024-09-12 20:03:33,748 INFO L226 Difference]: Without dead ends: 290 [2024-09-12 20:03:33,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:03:33,749 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 143 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:33,749 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 224 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-09-12 20:03:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-09-12 20:03:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 273. [2024-09-12 20:03:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 182 states have (on average 1.2802197802197801) internal successors, (233), 212 states have internal predecessors, (233), 36 states have call successors, (36), 26 states have call predecessors, (36), 30 states have return successors, (45), 35 states have call predecessors, (45), 31 states have call successors, (45) [2024-09-12 20:03:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 314 transitions. [2024-09-12 20:03:33,889 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 314 transitions. Word has length 59 [2024-09-12 20:03:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:33,890 INFO L474 AbstractCegarLoop]: Abstraction has 273 states and 314 transitions. [2024-09-12 20:03:33,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:33,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 314 transitions. [2024-09-12 20:03:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:03:33,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:33,892 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:33,908 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:34,092 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:34,093 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_30_to_37_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash -205774693, now seen corresponding path program 1 times [2024-09-12 20:03:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562048714] [2024-09-12 20:03:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:03:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:03:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:03:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:03:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 20:03:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:03:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 20:03:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:34,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562048714] [2024-09-12 20:03:34,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562048714] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:34,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562026156] [2024-09-12 20:03:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:34,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:34,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:34,448 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 20:03:34,449 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 20:03:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:34,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 20:03:34,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:34,605 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 11 treesize of output 7 [2024-09-12 20:03:34,735 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 21 treesize of output 13 [2024-09-12 20:03:35,086 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 26 treesize of output 14 [2024-09-12 20:03:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 20:03:35,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 20:03:35,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562026156] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:35,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:03:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2024-09-12 20:03:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113600700] [2024-09-12 20:03:35,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:35,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 20:03:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 20:03:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:03:35,264 INFO L87 Difference]: Start difference. First operand 273 states and 314 transitions. Second operand has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-12 20:03:39,860 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 20:03:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:39,936 INFO L93 Difference]: Finished difference Result 322 states and 362 transitions. [2024-09-12 20:03:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:03:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 60 [2024-09-12 20:03:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:39,939 INFO L225 Difference]: With dead ends: 322 [2024-09-12 20:03:39,939 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 20:03:39,939 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 113 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:03:39,940 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 192 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:39,940 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 772 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-09-12 20:03:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 20:03:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 271. [2024-09-12 20:03:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 182 states have (on average 1.2747252747252746) internal successors, (232), 211 states have internal predecessors, (232), 35 states have call successors, (35), 26 states have call predecessors, (35), 30 states have return successors, (42), 34 states have call predecessors, (42), 30 states have call successors, (42) [2024-09-12 20:03:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 309 transitions. [2024-09-12 20:03:40,052 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 309 transitions. Word has length 60 [2024-09-12 20:03:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:40,053 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 309 transitions. [2024-09-12 20:03:40,053 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-12 20:03:40,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 309 transitions. [2024-09-12 20:03:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:03:40,054 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:40,054 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:40,072 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 20:03:40,255 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 20:03:40,255 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:40,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash -936652325, now seen corresponding path program 1 times [2024-09-12 20:03:40,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:40,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203650991] [2024-09-12 20:03:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:40,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:03:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:03:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:03:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:03:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 20:03:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 20:03:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:03:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 20:03:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203650991] [2024-09-12 20:03:40,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203650991] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:03:40,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:03:40,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-09-12 20:03:40,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763471465] [2024-09-12 20:03:40,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:03:40,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:03:40,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:40,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:03:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:03:40,899 INFO L87 Difference]: Start difference. First operand 271 states and 309 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-12 20:03:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:41,727 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2024-09-12 20:03:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:03:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 60 [2024-09-12 20:03:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:41,729 INFO L225 Difference]: With dead ends: 274 [2024-09-12 20:03:41,729 INFO L226 Difference]: Without dead ends: 273 [2024-09-12 20:03:41,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-09-12 20:03:41,730 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 135 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:41,731 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 282 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:03:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-09-12 20:03:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2024-09-12 20:03:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 182 states have (on average 1.2692307692307692) internal successors, (231), 211 states have internal predecessors, (231), 35 states have call successors, (35), 26 states have call predecessors, (35), 30 states have return successors, (42), 34 states have call predecessors, (42), 30 states have call successors, (42) [2024-09-12 20:03:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 308 transitions. [2024-09-12 20:03:41,843 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 308 transitions. Word has length 60 [2024-09-12 20:03:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:41,843 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 308 transitions. [2024-09-12 20:03:41,844 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-12 20:03:41,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 308 transitions. [2024-09-12 20:03:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:03:41,844 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:41,844 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:41,844 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-09-12 20:03:41,845 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_30_to_37_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2084048062, now seen corresponding path program 1 times [2024-09-12 20:03:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792712544] [2024-09-12 20:03:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:03:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:03:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:03:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:03:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 20:03:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:03:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 20:03:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792712544] [2024-09-12 20:03:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792712544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651582936] [2024-09-12 20:03:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:42,184 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 20:03:42,192 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 20:03:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:42,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 20:03:42,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:42,338 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 11 treesize of output 7 [2024-09-12 20:03:42,431 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 21 treesize of output 13 [2024-09-12 20:03:42,773 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 30 treesize of output 18 [2024-09-12 20:03:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 20:03:42,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 20:03:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651582936] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:03:42,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:03:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2024-09-12 20:03:42,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650674565] [2024-09-12 20:03:42,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:42,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 20:03:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 20:03:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:03:42,924 INFO L87 Difference]: Start difference. First operand 271 states and 308 transitions. Second operand has 21 states, 18 states have (on average 4.055555555555555) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-12 20:03:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:43,634 INFO L93 Difference]: Finished difference Result 371 states and 423 transitions. [2024-09-12 20:03:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 20:03:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.055555555555555) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 61 [2024-09-12 20:03:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:43,637 INFO L225 Difference]: With dead ends: 371 [2024-09-12 20:03:43,637 INFO L226 Difference]: Without dead ends: 370 [2024-09-12 20:03:43,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 115 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2024-09-12 20:03:43,638 INFO L434 NwaCegarLoop]: 125 mSDtfsCounter, 220 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:43,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 920 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:03:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-09-12 20:03:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 313. [2024-09-12 20:03:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 212 states have (on average 1.278301886792453) internal successors, (271), 243 states have internal predecessors, (271), 43 states have call successors, (43), 28 states have call predecessors, (43), 34 states have return successors, (54), 42 states have call predecessors, (54), 38 states have call successors, (54) [2024-09-12 20:03:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2024-09-12 20:03:43,827 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 61 [2024-09-12 20:03:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:43,827 INFO L474 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2024-09-12 20:03:43,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.055555555555555) internal successors, (73), 16 states have internal predecessors, (73), 8 states have call successors, (25), 8 states have call predecessors, (25), 3 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-12 20:03:43,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2024-09-12 20:03:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 20:03:43,829 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:43,829 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:43,847 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 20:03:44,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:44,030 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1211051983, now seen corresponding path program 1 times [2024-09-12 20:03:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:44,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646050601] [2024-09-12 20:03:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:44,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239266161] [2024-09-12 20:03:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:44,076 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 20:03:44,078 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 20:03:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:44,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:03:44,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:44,249 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 11 treesize of output 7 [2024-09-12 20:03:44,253 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 11 treesize of output 7 [2024-09-12 20:03:44,260 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 15 treesize of output 11 [2024-09-12 20:03:44,459 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 11 treesize of output 7 [2024-09-12 20:03:44,558 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 19 treesize of output 11 [2024-09-12 20:03:44,583 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 7 [2024-09-12 20:03:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 20:03:44,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:44,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646050601] [2024-09-12 20:03:44,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239266161] [2024-09-12 20:03:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239266161] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:44,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:44,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:03:44,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488966835] [2024-09-12 20:03:44,789 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:44,789 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:03:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:44,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:03:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-09-12 20:03:44,790 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:45,595 INFO L93 Difference]: Finished difference Result 336 states and 381 transitions. [2024-09-12 20:03:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:03:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2024-09-12 20:03:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:45,597 INFO L225 Difference]: With dead ends: 336 [2024-09-12 20:03:45,597 INFO L226 Difference]: Without dead ends: 332 [2024-09-12 20:03:45,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:03:45,599 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 110 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:45,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 344 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:03:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-09-12 20:03:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 315. [2024-09-12 20:03:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 214 states have (on average 1.2710280373831775) internal successors, (272), 244 states have internal predecessors, (272), 43 states have call successors, (43), 29 states have call predecessors, (43), 34 states have return successors, (54), 42 states have call predecessors, (54), 38 states have call successors, (54) [2024-09-12 20:03:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 369 transitions. [2024-09-12 20:03:45,801 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 369 transitions. Word has length 64 [2024-09-12 20:03:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:45,802 INFO L474 AbstractCegarLoop]: Abstraction has 315 states and 369 transitions. [2024-09-12 20:03:45,802 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 5 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-12 20:03:45,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 369 transitions. [2024-09-12 20:03:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 20:03:45,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:45,803 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:45,823 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 20:03:46,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:46,007 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_40_to_50_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:46,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:46,008 INFO L85 PathProgramCache]: Analyzing trace with hash 430029033, now seen corresponding path program 1 times [2024-09-12 20:03:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740424358] [2024-09-12 20:03:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:46,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346964085] [2024-09-12 20:03:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:46,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:46,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:46,047 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 20:03:46,057 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 20:03:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:46,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 20:03:46,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:46,214 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 11 treesize of output 7 [2024-09-12 20:03:46,220 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 15 treesize of output 1 [2024-09-12 20:03:46,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-09-12 20:03:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-09-12 20:03:46,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:03:46,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740424358] [2024-09-12 20:03:46,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:46,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346964085] [2024-09-12 20:03:46,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346964085] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:03:46,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:03:46,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:03:46,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530362884] [2024-09-12 20:03:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:03:46,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:03:46,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:03:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:03:46,501 INFO L87 Difference]: Start difference. First operand 315 states and 369 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:47,062 INFO L93 Difference]: Finished difference Result 336 states and 381 transitions. [2024-09-12 20:03:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:03:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2024-09-12 20:03:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:47,066 INFO L225 Difference]: With dead ends: 336 [2024-09-12 20:03:47,066 INFO L226 Difference]: Without dead ends: 335 [2024-09-12 20:03:47,066 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:03:47,067 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 88 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:47,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 413 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:03:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-12 20:03:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 315. [2024-09-12 20:03:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 244 states have internal predecessors, (270), 43 states have call successors, (43), 29 states have call predecessors, (43), 34 states have return successors, (54), 42 states have call predecessors, (54), 38 states have call successors, (54) [2024-09-12 20:03:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 367 transitions. [2024-09-12 20:03:47,276 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 367 transitions. Word has length 68 [2024-09-12 20:03:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:47,277 INFO L474 AbstractCegarLoop]: Abstraction has 315 states and 367 transitions. [2024-09-12 20:03:47,277 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 20:03:47,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 367 transitions. [2024-09-12 20:03:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 20:03:47,278 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:47,278 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:47,295 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 20:03:47,479 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 20:03:47,479 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:47,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 294924789, now seen corresponding path program 1 times [2024-09-12 20:03:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113394857] [2024-09-12 20:03:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:03:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:03:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:03:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:03:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:03:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 20:03:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 20:03:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:03:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 20:03:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 20:03:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:47,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113394857] [2024-09-12 20:03:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113394857] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:03:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:03:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:03:47,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092327935] [2024-09-12 20:03:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:03:47,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:03:47,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:03:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:03:47,755 INFO L87 Difference]: Start difference. First operand 315 states and 367 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 20:03:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:03:48,303 INFO L93 Difference]: Finished difference Result 319 states and 371 transitions. [2024-09-12 20:03:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:03:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2024-09-12 20:03:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:03:48,305 INFO L225 Difference]: With dead ends: 319 [2024-09-12 20:03:48,305 INFO L226 Difference]: Without dead ends: 277 [2024-09-12 20:03:48,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:03:48,306 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 87 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:03:48,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 303 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:03:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-09-12 20:03:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-09-12 20:03:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 184 states have (on average 1.298913043478261) internal successors, (239), 214 states have internal predecessors, (239), 38 states have call successors, (38), 24 states have call predecessors, (38), 29 states have return successors, (49), 37 states have call predecessors, (49), 34 states have call successors, (49) [2024-09-12 20:03:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 326 transitions. [2024-09-12 20:03:48,485 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 326 transitions. Word has length 70 [2024-09-12 20:03:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:03:48,486 INFO L474 AbstractCegarLoop]: Abstraction has 275 states and 326 transitions. [2024-09-12 20:03:48,486 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 20:03:48,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 326 transitions. [2024-09-12 20:03:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-12 20:03:48,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:03:48,487 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:03:48,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 20:03:48,487 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_40_to_50_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:03:48,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:03:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -305613660, now seen corresponding path program 1 times [2024-09-12 20:03:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:03:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710920395] [2024-09-12 20:03:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:03:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:03:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360891275] [2024-09-12 20:03:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:03:48,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:03:48,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:03:48,519 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 20:03:48,520 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 20:03:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:03:48,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 20:03:48,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:03:48,672 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 15 treesize of output 1 [2024-09-12 20:03:48,674 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 11 treesize of output 7 [2024-09-12 20:03:48,978 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 21 treesize of output 13 [2024-09-12 20:03:53,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:03:53,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-09-12 20:03:53,268 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 26 treesize of output 14 [2024-09-12 20:03:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-12 20:03:53,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:03:53,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:03:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710920395] [2024-09-12 20:03:53,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:03:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360891275] [2024-09-12 20:03:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360891275] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:03:53,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:03:53,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 20:03:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363531187] [2024-09-12 20:03:53,356 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:03:53,356 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:03:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:03:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:03:53,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2024-09-12 20:03:53,357 INFO L87 Difference]: Start difference. First operand 275 states and 326 transitions. Second operand has 13 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:03:57,535 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 20:04:01,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:05,585 WARN L539 Checker$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 20:04:09,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:13,963 WARN L539 Checker$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 20:04:17,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:22,166 WARN L539 Checker$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 20:04:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:22,190 INFO L93 Difference]: Finished difference Result 323 states and 379 transitions. [2024-09-12 20:04:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:04:22,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 75 [2024-09-12 20:04:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:22,193 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:04:22,193 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:04:22,193 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=79, Invalid=262, Unknown=1, NotChecked=0, Total=342 [2024-09-12 20:04:22,194 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 166 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 27 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:22,194 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 398 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 351 Invalid, 11 Unknown, 0 Unchecked, 28.5s Time] [2024-09-12 20:04:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:04:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 307. [2024-09-12 20:04:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 208 states have (on average 1.2884615384615385) internal successors, (268), 238 states have internal predecessors, (268), 43 states have call successors, (43), 27 states have call predecessors, (43), 32 states have return successors, (55), 42 states have call predecessors, (55), 38 states have call successors, (55) [2024-09-12 20:04:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 366 transitions. [2024-09-12 20:04:22,368 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 366 transitions. Word has length 75 [2024-09-12 20:04:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:22,368 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 366 transitions. [2024-09-12 20:04:22,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.8) internal successors, (38), 11 states have internal predecessors, (38), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:04:22,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 366 transitions. [2024-09-12 20:04:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 20:04:22,369 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:22,369 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:22,386 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 20:04:22,570 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 20:04:22,570 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_40_to_50_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:22,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash -884088804, now seen corresponding path program 1 times [2024-09-12 20:04:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172411834] [2024-09-12 20:04:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:22,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361646131] [2024-09-12 20:04:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:22,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:22,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:22,597 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 20:04:22,598 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 20:04:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:22,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 20:04:22,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:22,799 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 11 treesize of output 7 [2024-09-12 20:04:22,804 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 11 treesize of output 7 [2024-09-12 20:04:23,100 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 19 treesize of output 11 [2024-09-12 20:04:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-12 20:04:23,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:23,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:23,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172411834] [2024-09-12 20:04:23,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:23,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361646131] [2024-09-12 20:04:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361646131] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:23,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:23,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-12 20:04:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173194218] [2024-09-12 20:04:23,487 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:23,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:04:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:04:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:04:23,488 INFO L87 Difference]: Start difference. First operand 307 states and 366 transitions. Second operand has 13 states, 10 states have (on average 3.9) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:04:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:24,174 INFO L93 Difference]: Finished difference Result 322 states and 378 transitions. [2024-09-12 20:04:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:04:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.9) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 76 [2024-09-12 20:04:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:24,177 INFO L225 Difference]: With dead ends: 322 [2024-09-12 20:04:24,177 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 20:04:24,177 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-12 20:04:24,177 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 198 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:24,178 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 416 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 340 Invalid, 3 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:04:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 20:04:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 307. [2024-09-12 20:04:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 208 states have (on average 1.2836538461538463) internal successors, (267), 238 states have internal predecessors, (267), 43 states have call successors, (43), 27 states have call predecessors, (43), 32 states have return successors, (55), 42 states have call predecessors, (55), 38 states have call successors, (55) [2024-09-12 20:04:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 365 transitions. [2024-09-12 20:04:24,349 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 365 transitions. Word has length 76 [2024-09-12 20:04:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:24,350 INFO L474 AbstractCegarLoop]: Abstraction has 307 states and 365 transitions. [2024-09-12 20:04:24,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.9) internal successors, (39), 11 states have internal predecessors, (39), 7 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:04:24,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 365 transitions. [2024-09-12 20:04:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 20:04:24,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:24,351 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:24,363 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:24,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 20:04:24,551 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_30_to_37_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:24,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash 511020645, now seen corresponding path program 2 times [2024-09-12 20:04:24,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:24,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907383199] [2024-09-12 20:04:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:24,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:24,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032923243] [2024-09-12 20:04:24,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 20:04:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:24,576 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 20:04:24,577 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 20:04:24,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 20:04:24,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 20:04:24,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-12 20:04:24,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:24,762 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 15 treesize of output 1 [2024-09-12 20:04:24,765 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 11 treesize of output 7 [2024-09-12 20:04:24,946 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 21 treesize of output 13 [2024-09-12 20:04:25,380 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 39 treesize of output 23 [2024-09-12 20:04:25,646 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 7 [2024-09-12 20:04:25,649 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 30 treesize of output 18 [2024-09-12 20:04:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 20:04:25,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:25,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:25,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907383199] [2024-09-12 20:04:25,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032923243] [2024-09-12 20:04:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032923243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:25,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:04:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857686066] [2024-09-12 20:04:25,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:25,733 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:04:25,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:25,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:04:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:04:25,733 INFO L87 Difference]: Start difference. First operand 307 states and 365 transitions. Second operand has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:04:29,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:34,037 WARN L539 Checker$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 20:04:38,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:04:42,470 WARN L539 Checker$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 20:04:46,646 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 20:04:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:46,767 INFO L93 Difference]: Finished difference Result 333 states and 383 transitions. [2024-09-12 20:04:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:04:46,768 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 77 [2024-09-12 20:04:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:46,770 INFO L225 Difference]: With dead ends: 333 [2024-09-12 20:04:46,770 INFO L226 Difference]: Without dead ends: 332 [2024-09-12 20:04:46,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 51 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:04:46,771 INFO L434 NwaCegarLoop]: 141 mSDtfsCounter, 148 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 20 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:46,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 994 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 587 Invalid, 5 Unknown, 0 Unchecked, 20.6s Time] [2024-09-12 20:04:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-09-12 20:04:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 306. [2024-09-12 20:04:47,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 208 states have (on average 1.2692307692307692) internal successors, (264), 237 states have internal predecessors, (264), 43 states have call successors, (43), 27 states have call predecessors, (43), 32 states have return successors, (55), 42 states have call predecessors, (55), 38 states have call successors, (55) [2024-09-12 20:04:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 362 transitions. [2024-09-12 20:04:47,007 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 362 transitions. Word has length 77 [2024-09-12 20:04:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:47,008 INFO L474 AbstractCegarLoop]: Abstraction has 306 states and 362 transitions. [2024-09-12 20:04:47,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:04:47,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 362 transitions. [2024-09-12 20:04:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 20:04:47,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:47,009 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:47,028 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 20:04:47,211 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 20:04:47,211 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_30_to_37_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1338229078, now seen corresponding path program 2 times [2024-09-12 20:04:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798459849] [2024-09-12 20:04:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823035372] [2024-09-12 20:04:47,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 20:04:47,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:47,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:47,236 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 20:04:47,237 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 20:04:47,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 20:04:47,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 20:04:47,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-12 20:04:47,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:47,402 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 11 treesize of output 7 [2024-09-12 20:04:47,405 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 11 treesize of output 7 [2024-09-12 20:04:47,561 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 19 treesize of output 11 [2024-09-12 20:04:47,747 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 19 treesize of output 11 [2024-09-12 20:04:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 20:04:47,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:48,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798459849] [2024-09-12 20:04:48,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823035372] [2024-09-12 20:04:48,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823035372] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:48,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:48,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:04:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26332176] [2024-09-12 20:04:48,111 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:48,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:04:48,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:04:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:04:48,112 INFO L87 Difference]: Start difference. First operand 306 states and 362 transitions. Second operand has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:04:48,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:48,990 INFO L93 Difference]: Finished difference Result 381 states and 432 transitions. [2024-09-12 20:04:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 20:04:48,991 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 78 [2024-09-12 20:04:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:48,993 INFO L225 Difference]: With dead ends: 381 [2024-09-12 20:04:48,993 INFO L226 Difference]: Without dead ends: 380 [2024-09-12 20:04:48,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-09-12 20:04:48,995 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 157 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:48,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 793 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:04:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-09-12 20:04:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 320. [2024-09-12 20:04:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 218 states have (on average 1.2522935779816513) internal successors, (273), 247 states have internal predecessors, (273), 43 states have call successors, (43), 30 states have call predecessors, (43), 36 states have return successors, (56), 43 states have call predecessors, (56), 38 states have call successors, (56) [2024-09-12 20:04:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 372 transitions. [2024-09-12 20:04:49,198 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 372 transitions. Word has length 78 [2024-09-12 20:04:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:49,199 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 372 transitions. [2024-09-12 20:04:49,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 20:04:49,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 372 transitions. [2024-09-12 20:04:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 20:04:49,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:49,200 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:49,212 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 20:04:49,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:49,400 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:49,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1288638518, now seen corresponding path program 1 times [2024-09-12 20:04:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:49,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165279461] [2024-09-12 20:04:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:04:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597075122] [2024-09-12 20:04:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:49,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:49,431 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:04:49,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 20:04:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:49,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-12 20:04:49,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:49,612 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 11 treesize of output 7 [2024-09-12 20:04:49,617 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 11 treesize of output 7 [2024-09-12 20:04:49,622 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 11 treesize of output 7 [2024-09-12 20:04:50,083 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 19 treesize of output 11 [2024-09-12 20:04:50,088 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 19 treesize of output 11 [2024-09-12 20:04:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-12 20:04:50,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:04:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165279461] [2024-09-12 20:04:50,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:04:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597075122] [2024-09-12 20:04:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597075122] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:50,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-12 20:04:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638977586] [2024-09-12 20:04:50,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:04:50,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 20:04:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 20:04:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:04:50,677 INFO L87 Difference]: Start difference. First operand 320 states and 372 transitions. Second operand has 16 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:04:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:51,653 INFO L93 Difference]: Finished difference Result 336 states and 385 transitions. [2024-09-12 20:04:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:04:51,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 80 [2024-09-12 20:04:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:51,655 INFO L225 Difference]: With dead ends: 336 [2024-09-12 20:04:51,656 INFO L226 Difference]: Without dead ends: 334 [2024-09-12 20:04:51,656 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:04:51,657 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 159 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:51,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 542 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 571 Invalid, 3 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:04:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-09-12 20:04:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 324. [2024-09-12 20:04:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 221 states have (on average 1.248868778280543) internal successors, (276), 250 states have internal predecessors, (276), 43 states have call successors, (43), 31 states have call predecessors, (43), 37 states have return successors, (56), 43 states have call predecessors, (56), 38 states have call successors, (56) [2024-09-12 20:04:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 375 transitions. [2024-09-12 20:04:51,920 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 375 transitions. Word has length 80 [2024-09-12 20:04:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:51,922 INFO L474 AbstractCegarLoop]: Abstraction has 324 states and 375 transitions. [2024-09-12 20:04:51,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 8 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-09-12 20:04:51,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 375 transitions. [2024-09-12 20:04:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 20:04:51,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:51,923 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:51,942 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 20:04:52,123 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-12 20:04:52,124 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_40_to_50_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:52,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:52,126 INFO L85 PathProgramCache]: Analyzing trace with hash -683114927, now seen corresponding path program 1 times [2024-09-12 20:04:52,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:52,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347115797] [2024-09-12 20:04:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:52,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:04:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:04:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:04:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:52,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:04:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:04:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:04:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:04:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:04:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:04:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 20:04:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347115797] [2024-09-12 20:04:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347115797] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142907571] [2024-09-12 20:04:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:53,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:53,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:53,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:04:53,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 20:04:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:53,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 20:04:53,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:53,660 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 17 treesize of output 9 [2024-09-12 20:04:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-09-12 20:04:54,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142907571] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:54,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:54,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-09-12 20:04:54,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261864754] [2024-09-12 20:04:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:54,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:54,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2024-09-12 20:04:54,533 INFO L87 Difference]: Start difference. First operand 324 states and 375 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:04:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:04:55,567 INFO L93 Difference]: Finished difference Result 326 states and 378 transitions. [2024-09-12 20:04:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:04:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2024-09-12 20:04:55,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:04:55,569 INFO L225 Difference]: With dead ends: 326 [2024-09-12 20:04:55,569 INFO L226 Difference]: Without dead ends: 325 [2024-09-12 20:04:55,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-09-12 20:04:55,570 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 22 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:04:55,570 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 408 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:04:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-09-12 20:04:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2024-09-12 20:04:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 221 states have (on average 1.239819004524887) internal successors, (274), 249 states have internal predecessors, (274), 43 states have call successors, (43), 31 states have call predecessors, (43), 37 states have return successors, (56), 43 states have call predecessors, (56), 38 states have call successors, (56) [2024-09-12 20:04:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 373 transitions. [2024-09-12 20:04:55,806 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 373 transitions. Word has length 84 [2024-09-12 20:04:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:04:55,806 INFO L474 AbstractCegarLoop]: Abstraction has 323 states and 373 transitions. [2024-09-12 20:04:55,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:04:55,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 373 transitions. [2024-09-12 20:04:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 20:04:55,808 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:04:55,809 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:04:55,825 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-12 20:04:56,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 20:04:56,009 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_40_to_50_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:04:56,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:04:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash 298273817, now seen corresponding path program 1 times [2024-09-12 20:04:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:04:56,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065195872] [2024-09-12 20:04:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:04:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:04:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:04:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:04:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:04:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:04:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:04:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:04:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:04:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:04:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:04:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:04:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-09-12 20:04:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:04:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065195872] [2024-09-12 20:04:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065195872] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:04:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263606722] [2024-09-12 20:04:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:04:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:04:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:04:56,841 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:04:56,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 20:04:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:04:57,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 20:04:57,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:04:58,567 WARN L876 $PredicateComparison]: unable to prove that (exists ((|func_to_recursive_line_40_to_50_0_#t~mem8| Int) (|func_to_recursive_line_40_to_50_0_#t~mem9| Int)) (let ((.cse0 (* |func_to_recursive_line_40_to_50_0_#t~mem9| |func_to_recursive_line_40_to_50_0_#t~mem8|))) (and (<= (select (select |c_#memory_int#2| c_func_to_recursive_line_40_to_50_0_~d.base) c_func_to_recursive_line_40_to_50_0_~d.offset) .cse0) (<= .cse0 2147483647)))) is different from true [2024-09-12 20:04:58,582 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 17 treesize of output 9 [2024-09-12 20:04:59,889 WARN L876 $PredicateComparison]: unable to prove that (exists ((|func_to_recursive_line_40_to_50_0_#t~mem8| Int) (|func_to_recursive_line_40_to_50_0_#t~mem9| Int)) (let ((.cse0 (* |func_to_recursive_line_40_to_50_0_#t~mem9| |func_to_recursive_line_40_to_50_0_#t~mem8|))) (and (<= |c_func_to_recursive_line_40_to_50_0_#t~mem12| .cse0) (<= .cse0 2147483647)))) is different from true [2024-09-12 20:04:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-09-12 20:04:59,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:04:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263606722] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:04:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:04:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-09-12 20:04:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376583040] [2024-09-12 20:04:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:04:59,897 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:04:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:04:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:04:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=331, Unknown=2, NotChecked=74, Total=462 [2024-09-12 20:04:59,898 INFO L87 Difference]: Start difference. First operand 323 states and 373 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:05:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:00,698 INFO L93 Difference]: Finished difference Result 323 states and 373 transitions. [2024-09-12 20:05:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:05:00,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 85 [2024-09-12 20:05:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:00,700 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:00,700 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:05:00,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=59, Invalid=367, Unknown=2, NotChecked=78, Total=506 [2024-09-12 20:05:00,701 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:00,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 355 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 203 Unchecked, 0.2s Time] [2024-09-12 20:05:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:05:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2024-09-12 20:05:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 248 states have internal predecessors, (272), 43 states have call successors, (43), 31 states have call predecessors, (43), 37 states have return successors, (56), 43 states have call predecessors, (56), 38 states have call successors, (56) [2024-09-12 20:05:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 371 transitions. [2024-09-12 20:05:00,876 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 371 transitions. Word has length 85 [2024-09-12 20:05:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:00,876 INFO L474 AbstractCegarLoop]: Abstraction has 322 states and 371 transitions. [2024-09-12 20:05:00,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:05:00,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 371 transitions. [2024-09-12 20:05:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 20:05:00,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:00,877 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:00,889 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:01,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 20:05:01,078 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_30_to_37_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:05:01,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1946407138, now seen corresponding path program 1 times [2024-09-12 20:05:01,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:01,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616766715] [2024-09-12 20:05:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:05:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:05:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:05:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:05:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 20:05:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:05:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 20:05:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 20:05:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 20:05:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 20:05:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616766715] [2024-09-12 20:05:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616766715] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875738417] [2024-09-12 20:05:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:01,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:01,645 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:05:01,647 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 20:05:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:01,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 20:05:01,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:01,833 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 15 treesize of output 1 [2024-09-12 20:05:02,035 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 28 treesize of output 16 [2024-09-12 20:05:02,380 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 39 treesize of output 23 [2024-09-12 20:05:02,787 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 26 treesize of output 14 [2024-09-12 20:05:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 20:05:02,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 20:05:03,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875738417] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:03,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:05:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 35 [2024-09-12 20:05:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938874235] [2024-09-12 20:05:03,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:03,049 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 20:05:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 20:05:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 20:05:03,050 INFO L87 Difference]: Start difference. First operand 322 states and 371 transitions. Second operand has 36 states, 32 states have (on average 3.5625) internal successors, (114), 27 states have internal predecessors, (114), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 20:05:07,071 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 20:05:11,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:05:15,661 WARN L539 Checker$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 20:05:19,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:05:23,737 WARN L539 Checker$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 20:05:27,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:05:31,973 WARN L539 Checker$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 20:05:35,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:05:40,015 WARN L539 Checker$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 20:05:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:40,133 INFO L93 Difference]: Finished difference Result 336 states and 377 transitions. [2024-09-12 20:05:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 20:05:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.5625) internal successors, (114), 27 states have internal predecessors, (114), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 86 [2024-09-12 20:05:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:40,136 INFO L225 Difference]: With dead ends: 336 [2024-09-12 20:05:40,136 INFO L226 Difference]: Without dead ends: 335 [2024-09-12 20:05:40,137 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 157 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=417, Invalid=1653, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 20:05:40,137 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 240 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 50 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:40,137 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1180 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 730 Invalid, 9 Unknown, 0 Unchecked, 36.6s Time] [2024-09-12 20:05:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-12 20:05:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 321. [2024-09-12 20:05:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 221 states have (on average 1.2171945701357465) internal successors, (269), 247 states have internal predecessors, (269), 43 states have call successors, (43), 31 states have call predecessors, (43), 37 states have return successors, (56), 43 states have call predecessors, (56), 38 states have call successors, (56) [2024-09-12 20:05:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2024-09-12 20:05:40,411 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 86 [2024-09-12 20:05:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:40,412 INFO L474 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2024-09-12 20:05:40,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.5625) internal successors, (114), 27 states have internal predecessors, (114), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 20:05:40,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,412 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2024-09-12 20:05:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 20:05:40,413 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:40,413 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:40,431 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:40,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:40,614 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_40_to_50_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:05:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 656553811, now seen corresponding path program 1 times [2024-09-12 20:05:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165277706] [2024-09-12 20:05:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:40,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:40,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:05:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:05:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:05:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:05:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:05:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:05:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:05:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:05:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:05:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 20:05:41,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165277706] [2024-09-12 20:05:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165277706] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:41,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605838173] [2024-09-12 20:05:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:41,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:41,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:41,140 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:05:41,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 20:05:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:05:41,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:41,365 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 11 treesize of output 7 [2024-09-12 20:05:41,454 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_func_to_recursive_line_30_to_37_0_#t~mem29_30| Int)) (let ((.cse0 (select |c_old(#memory_int#3)| |c_func_to_recursive_line_30_to_37_0_#in~p.base|))) (and (= (store |c_old(#memory_int#3)| |c_func_to_recursive_line_30_to_37_0_#in~p.base| (store .cse0 |c_func_to_recursive_line_30_to_37_0_#in~p.offset| (* |v_func_to_recursive_line_30_to_37_0_#t~mem29_30| 2))) |c_#memory_int#3|) (<= (select .cse0 |c_func_to_recursive_line_30_to_37_0_#in~p.offset|) |v_func_to_recursive_line_30_to_37_0_#t~mem29_30|)))) is different from true [2024-09-12 20:05:41,480 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 21 treesize of output 13 [2024-09-12 20:05:41,820 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 26 treesize of output 14 [2024-09-12 20:05:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 2 not checked. [2024-09-12 20:05:41,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:42,202 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 9 treesize of output 5 [2024-09-12 20:05:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605838173] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:42,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:05:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2024-09-12 20:05:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346345555] [2024-09-12 20:05:42,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:42,283 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 20:05:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 20:05:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=612, Unknown=1, NotChecked=50, Total=756 [2024-09-12 20:05:42,283 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand has 20 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 20:05:46,330 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 20:05:50,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:05:58,612 WARN L539 Checker$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 20:06:02,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:06:06,967 WARN L539 Checker$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 20:06:11,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:06:15,295 WARN L539 Checker$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 20:06:19,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:06:23,587 WARN L539 Checker$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 20:06:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:23,724 INFO L93 Difference]: Finished difference Result 368 states and 423 transitions. [2024-09-12 20:06:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 20:06:23,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 86 [2024-09-12 20:06:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:23,726 INFO L225 Difference]: With dead ends: 368 [2024-09-12 20:06:23,726 INFO L226 Difference]: Without dead ends: 349 [2024-09-12 20:06:23,727 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=289, Invalid=1604, Unknown=3, NotChecked=84, Total=1980 [2024-09-12 20:06:23,727 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 138 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 34 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:23,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 918 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 804 Invalid, 22 Unknown, 181 Unchecked, 36.8s Time] [2024-09-12 20:06:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-09-12 20:06:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 328. [2024-09-12 20:06:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 252 states have internal predecessors, (274), 44 states have call successors, (44), 31 states have call predecessors, (44), 37 states have return successors, (63), 45 states have call predecessors, (63), 40 states have call successors, (63) [2024-09-12 20:06:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 381 transitions. [2024-09-12 20:06:24,004 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 381 transitions. Word has length 86 [2024-09-12 20:06:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:24,005 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 381 transitions. [2024-09-12 20:06:24,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 20:06:24,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 381 transitions. [2024-09-12 20:06:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 20:06:24,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:24,006 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:24,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 20:06:24,206 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:24,206 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_30_to_37_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:06:24,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:24,207 INFO L85 PathProgramCache]: Analyzing trace with hash -209079013, now seen corresponding path program 1 times [2024-09-12 20:06:24,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:24,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687767746] [2024-09-12 20:06:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 20:06:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 20:06:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:06:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 20:06:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 20:06:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 20:06:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 20:06:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 20:06:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 20:06:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687767746] [2024-09-12 20:06:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687767746] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227551293] [2024-09-12 20:06:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:24,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:24,707 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:06:24,709 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 20:06:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:24,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 20:06:24,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:24,912 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 15 treesize of output 1 [2024-09-12 20:06:25,135 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 28 treesize of output 16 [2024-09-12 20:06:25,598 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 43 treesize of output 27 [2024-09-12 20:06:25,906 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 26 treesize of output 14 [2024-09-12 20:06:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 20:06:25,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 20:06:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227551293] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:26,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:06:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 35 [2024-09-12 20:06:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206898609] [2024-09-12 20:06:26,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:26,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 20:06:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 20:06:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 20:06:26,195 INFO L87 Difference]: Start difference. First operand 328 states and 381 transitions. Second operand has 36 states, 32 states have (on average 3.625) internal successors, (116), 27 states have internal predecessors, (116), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 20:06:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:27,343 INFO L93 Difference]: Finished difference Result 395 states and 457 transitions. [2024-09-12 20:06:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 20:06:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.625) internal successors, (116), 27 states have internal predecessors, (116), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 87 [2024-09-12 20:06:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:27,346 INFO L225 Difference]: With dead ends: 395 [2024-09-12 20:06:27,346 INFO L226 Difference]: Without dead ends: 394 [2024-09-12 20:06:27,347 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 159 SyntacticMatches, 15 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=487, Invalid=2165, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 20:06:27,348 INFO L434 NwaCegarLoop]: 107 mSDtfsCounter, 238 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:27,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 1163 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:06:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-09-12 20:06:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 382. [2024-09-12 20:06:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 265 states have (on average 1.2) internal successors, (318), 292 states have internal predecessors, (318), 54 states have call successors, (54), 35 states have call predecessors, (54), 43 states have return successors, (78), 55 states have call predecessors, (78), 49 states have call successors, (78) [2024-09-12 20:06:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 450 transitions. [2024-09-12 20:06:27,669 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 450 transitions. Word has length 87 [2024-09-12 20:06:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:27,669 INFO L474 AbstractCegarLoop]: Abstraction has 382 states and 450 transitions. [2024-09-12 20:06:27,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.625) internal successors, (116), 27 states have internal predecessors, (116), 13 states have call successors, (38), 13 states have call predecessors, (38), 4 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 20:06:27,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 450 transitions. [2024-09-12 20:06:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 20:06:27,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:27,670 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:27,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 20:06:27,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 20:06:27,871 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_40_to_50_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:06:27,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1121668261, now seen corresponding path program 1 times [2024-09-12 20:06:27,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:27,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673422719] [2024-09-12 20:06:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:06:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:06:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:06:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 20:06:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673422719] [2024-09-12 20:06:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673422719] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011693911] [2024-09-12 20:06:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:28,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:28,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:28,423 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:06:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 20:06:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:28,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:06:28,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:28,632 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 11 treesize of output 7 [2024-09-12 20:06:28,786 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 19 treesize of output 11 [2024-09-12 20:06:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-09-12 20:06:28,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:29,221 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 7 treesize of output 3 [2024-09-12 20:06:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011693911] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:29,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:06:29,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2024-09-12 20:06:29,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640369872] [2024-09-12 20:06:29,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:29,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 20:06:29,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 20:06:29,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-09-12 20:06:29,281 INFO L87 Difference]: Start difference. First operand 382 states and 450 transitions. Second operand has 21 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 20:06:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:30,193 INFO L93 Difference]: Finished difference Result 479 states and 582 transitions. [2024-09-12 20:06:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 20:06:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 87 [2024-09-12 20:06:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:30,195 INFO L225 Difference]: With dead ends: 479 [2024-09-12 20:06:30,195 INFO L226 Difference]: Without dead ends: 478 [2024-09-12 20:06:30,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=247, Invalid=1393, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 20:06:30,196 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 183 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 45 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:30,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 698 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 614 Invalid, 8 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:06:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-09-12 20:06:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 446. [2024-09-12 20:06:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 313 states have (on average 1.2268370607028753) internal successors, (384), 343 states have internal predecessors, (384), 61 states have call successors, (61), 37 states have call predecessors, (61), 52 states have return successors, (109), 65 states have call predecessors, (109), 56 states have call successors, (109) [2024-09-12 20:06:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 554 transitions. [2024-09-12 20:06:30,569 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 554 transitions. Word has length 87 [2024-09-12 20:06:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:30,569 INFO L474 AbstractCegarLoop]: Abstraction has 446 states and 554 transitions. [2024-09-12 20:06:30,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 10 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-09-12 20:06:30,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 554 transitions. [2024-09-12 20:06:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 20:06:30,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:30,570 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:30,594 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-12 20:06:30,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 20:06:30,771 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_40_to_50_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:06:30,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 113595069, now seen corresponding path program 1 times [2024-09-12 20:06:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278766735] [2024-09-12 20:06:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:06:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:06:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:06:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-09-12 20:06:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278766735] [2024-09-12 20:06:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278766735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:06:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:06:30,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:06:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745482793] [2024-09-12 20:06:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:06:30,926 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:06:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:06:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:06:30,926 INFO L87 Difference]: Start difference. First operand 446 states and 554 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:06:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:31,424 INFO L93 Difference]: Finished difference Result 446 states and 554 transitions. [2024-09-12 20:06:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:06:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2024-09-12 20:06:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:31,427 INFO L225 Difference]: With dead ends: 446 [2024-09-12 20:06:31,427 INFO L226 Difference]: Without dead ends: 445 [2024-09-12 20:06:31,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:06:31,428 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 40 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:31,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 250 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:06:31,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-09-12 20:06:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-09-12 20:06:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 313 states have (on average 1.220447284345048) internal successors, (382), 342 states have internal predecessors, (382), 61 states have call successors, (61), 37 states have call predecessors, (61), 52 states have return successors, (109), 65 states have call predecessors, (109), 56 states have call successors, (109) [2024-09-12 20:06:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 552 transitions. [2024-09-12 20:06:31,729 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 552 transitions. Word has length 89 [2024-09-12 20:06:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:31,729 INFO L474 AbstractCegarLoop]: Abstraction has 445 states and 552 transitions. [2024-09-12 20:06:31,729 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 20:06:31,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:31,729 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 552 transitions. [2024-09-12 20:06:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-12 20:06:31,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:31,730 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:31,730 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-09-12 20:06:31,730 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_40_to_50_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 20:06:31,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash -773520072, now seen corresponding path program 1 times [2024-09-12 20:06:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:31,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362699655] [2024-09-12 20:06:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:06:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:06:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:32,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 20:06:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 20:06:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-12 20:06:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 20:06:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 20:06:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 20:06:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-09-12 20:06:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362699655] [2024-09-12 20:06:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362699655] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841127660] [2024-09-12 20:06:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:33,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:33,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:33,065 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:06:33,066 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 20:06:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:33,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 20:06:33,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:33,276 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 15 treesize of output 1 [2024-09-12 20:06:33,280 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 15 treesize of output 1 [2024-09-12 20:06:33,552 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_func_to_recursive_line_30_to_37_0_#t~mem28_34| Int)) (let ((.cse0 (select |c_old(#memory_int#2)| |c_func_to_recursive_line_30_to_37_0_#in~d.base|))) (and (= (store |c_old(#memory_int#2)| |c_func_to_recursive_line_30_to_37_0_#in~d.base| (store .cse0 |c_func_to_recursive_line_30_to_37_0_#in~d.offset| (* |v_func_to_recursive_line_30_to_37_0_#t~mem28_34| 2))) |c_#memory_int#2|) (<= (select .cse0 |c_func_to_recursive_line_30_to_37_0_#in~d.offset|) |v_func_to_recursive_line_30_to_37_0_#t~mem28_34|)))) (exists ((|v_main_~#r~0.base_BEFORE_CALL_14| Int) (|v_main_~#r~0.offset_BEFORE_CALL_14| Int)) (<= (select (select |c_#memory_int#5| |v_main_~#r~0.base_BEFORE_CALL_14|) |v_main_~#r~0.offset_BEFORE_CALL_14|) 2147483647))) is different from true [2024-09-12 20:06:33,655 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 28 treesize of output 16 [2024-09-12 20:06:34,238 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 85 treesize of output 67 [2024-09-12 20:06:34,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 67 treesize of output 73 [2024-09-12 20:06:34,299 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 7 [2024-09-12 20:06:34,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-09-12 20:06:34,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-09-12 20:06:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 2 not checked. [2024-09-12 20:06:34,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841127660] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:34,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:06:34,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 31 [2024-09-12 20:06:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626096781] [2024-09-12 20:06:34,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:34,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 20:06:34,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 20:06:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1361, Unknown=1, NotChecked=74, Total=1560 [2024-09-12 20:06:34,967 INFO L87 Difference]: Start difference. First operand 445 states and 552 transitions. Second operand has 32 states, 27 states have (on average 3.185185185185185) internal successors, (86), 27 states have internal predecessors, (86), 13 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-12 20:06:39,034 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 20:06:43,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 20:06:51,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]