./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.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_ps5-ll.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 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe --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 20:05:17,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:05:17,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:05:17,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:05:17,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:05:17,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:05:17,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:05:17,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:05:17,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:05:17,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:05:17,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:05:17,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:05:17,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:05:17,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:05:17,512 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:05:17,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:05:17,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:05:17,513 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:05:17,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:05:17,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:05:17,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:05:17,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:05:17,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:05:17,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:05:17,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:05:17,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:05:17,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:05:17,518 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:05:17,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:05:17,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:05:17,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:05:17,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:05:17,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:05:17,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:05:17,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:05:17,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:05:17,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:05:17,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:05:17,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:05:17,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:05:17,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:05:17,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:05:17,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02d2a7ecaeb1f9a3fd2c207ee063800bfd7475435ba7bc7e95648b1704092bfe Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:05:17,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:05:17,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:05:17,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:05:17,801 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:05:17,801 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:05:17,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-09-12 20:05:19,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:05:19,337 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:05:19,337 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_ps5-ll.c [2024-09-12 20:05:19,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d8af47fe7/45b02296af3b4b45abac1c3381ffaf3e/FLAGd3b25569c [2024-09-12 20:05:19,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d8af47fe7/45b02296af3b4b45abac1c3381ffaf3e [2024-09-12 20:05:19,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:05:19,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:05:19,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:05:19,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:05:19,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:05:19,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c01984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19, skipping insertion in model container [2024-09-12 20:05:19,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:05:19,504 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_ps5-ll.c[987,1000] [2024-09-12 20:05:19,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:05:19,543 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:05:19,551 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_ps5-ll.c[987,1000] [2024-09-12 20:05:19,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:05:19,581 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:05:19,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19 WrapperNode [2024-09-12 20:05:19,582 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:05:19,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:05:19,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:05:19,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:05:19,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,607 INFO L138 Inliner]: procedures = 16, calls = 74, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:05:19,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:05:19,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:05:19,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:05:19,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:05:19,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,644 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 4, 5, 4, 36]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 1, 2]. [2024-09-12 20:05:19,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,662 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:05:19,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:05:19,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:05:19,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:05:19,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (1/1) ... [2024-09-12 20:05:19,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:05:19,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:19,702 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 20:05:19,707 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 20:05:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:05:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:05:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:05:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:05:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:05:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:05:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:05:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:05:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:05:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:05:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:05:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:05:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:05:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:05:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:05:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_35_0 [2024-09-12 20:05:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_35_0 [2024-09-12 20:05:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:05:19,838 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:05:19,839 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:05:21,147 INFO L? ?]: Removed 367 outVars from TransFormulas that were not future-live. [2024-09-12 20:05:21,147 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:05:21,179 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:05:21,180 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-12 20:05:21,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:05:21 BoogieIcfgContainer [2024-09-12 20:05:21,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:05:21,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:05:21,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:05:21,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:05:21,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:05:19" (1/3) ... [2024-09-12 20:05:21,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4553ac63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:05:21, skipping insertion in model container [2024-09-12 20:05:21,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:05:19" (2/3) ... [2024-09-12 20:05:21,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4553ac63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:05:21, skipping insertion in model container [2024-09-12 20:05:21,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:05:21" (3/3) ... [2024-09-12 20:05:21,190 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps5-ll.c [2024-09-12 20:05:21,204 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:05:21,205 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2024-09-12 20:05:21,264 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:05:21,270 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;@43106693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:05:21,271 INFO L337 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2024-09-12 20:05:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 103 states have (on average 1.8640776699029127) internal successors, (192), 189 states have internal predecessors, (192), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 20:05:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 20:05:21,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:21,283 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:21,283 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:21,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1969346836, now seen corresponding path program 1 times [2024-09-12 20:05:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427942475] [2024-09-12 20:05:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,451 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 20:05:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427942475] [2024-09-12 20:05:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427942475] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:21,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:21,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:05:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007130976] [2024-09-12 20:05:21,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:21,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 20:05:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 20:05:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:05:21,486 INFO L87 Difference]: Start difference. First operand has 202 states, 103 states have (on average 1.8640776699029127) internal successors, (192), 189 states have internal predecessors, (192), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:21,540 INFO L93 Difference]: Finished difference Result 396 states and 412 transitions. [2024-09-12 20:05:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 20:05:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-12 20:05:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:21,551 INFO L225 Difference]: With dead ends: 396 [2024-09-12 20:05:21,551 INFO L226 Difference]: Without dead ends: 198 [2024-09-12 20:05:21,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 20:05:21,562 INFO L434 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:21,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:05:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-09-12 20:05:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-09-12 20:05:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 101 states have (on average 1.8514851485148516) internal successors, (187), 187 states have internal predecessors, (187), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 20:05:21,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 201 transitions. [2024-09-12 20:05:21,625 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 201 transitions. Word has length 15 [2024-09-12 20:05:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:21,627 INFO L474 AbstractCegarLoop]: Abstraction has 198 states and 201 transitions. [2024-09-12 20:05:21,627 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:21,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 201 transitions. [2024-09-12 20:05:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 20:05:21,628 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:21,628 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:21,628 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:05:21,629 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:21,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1516273834, now seen corresponding path program 1 times [2024-09-12 20:05:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:21,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224883775] [2024-09-12 20:05:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:21,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:21,916 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 20:05:21,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:21,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224883775] [2024-09-12 20:05:21,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224883775] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:21,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:21,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396035083] [2024-09-12 20:05:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:21,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:21,919 INFO L87 Difference]: Start difference. First operand 198 states and 201 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:22,504 INFO L93 Difference]: Finished difference Result 356 states and 362 transitions. [2024-09-12 20:05:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:22,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-12 20:05:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:22,507 INFO L225 Difference]: With dead ends: 356 [2024-09-12 20:05:22,507 INFO L226 Difference]: Without dead ends: 346 [2024-09-12 20:05:22,507 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:22,508 INFO L434 NwaCegarLoop]: 149 mSDtfsCounter, 264 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:22,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 754 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:05:22,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-09-12 20:05:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 239. [2024-09-12 20:05:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.792857142857143) internal successors, (251), 226 states have internal predecessors, (251), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2024-09-12 20:05:22,528 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 15 [2024-09-12 20:05:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:22,528 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2024-09-12 20:05:22,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:22,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2024-09-12 20:05:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 20:05:22,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:22,529 INFO L216 NwaCegarLoop]: trace histogram [1, 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 20:05:22,529 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:05:22,529 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_35_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:22,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:22,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1569132524, now seen corresponding path program 1 times [2024-09-12 20:05:22,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:22,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857048491] [2024-09-12 20:05:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:22,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:22,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:22,695 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 20:05:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:22,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857048491] [2024-09-12 20:05:22,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857048491] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:22,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:22,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:22,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610576624] [2024-09-12 20:05:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:22,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:22,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:22,698 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:23,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:23,086 INFO L93 Difference]: Finished difference Result 346 states and 352 transitions. [2024-09-12 20:05:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-09-12 20:05:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:23,089 INFO L225 Difference]: With dead ends: 346 [2024-09-12 20:05:23,090 INFO L226 Difference]: Without dead ends: 338 [2024-09-12 20:05:23,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:23,091 INFO L434 NwaCegarLoop]: 149 mSDtfsCounter, 220 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:23,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 753 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-09-12 20:05:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 239. [2024-09-12 20:05:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.7357142857142858) internal successors, (243), 226 states have internal predecessors, (243), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 260 transitions. [2024-09-12 20:05:23,110 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 260 transitions. Word has length 25 [2024-09-12 20:05:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:23,110 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 260 transitions. [2024-09-12 20:05:23,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 260 transitions. [2024-09-12 20:05:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 20:05:23,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:23,111 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:23,111 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 20:05:23,112 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_35_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:23,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1164431260, now seen corresponding path program 1 times [2024-09-12 20:05:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918274807] [2024-09-12 20:05:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:23,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752235620] [2024-09-12 20:05:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:23,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:23,146 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 20:05:23,147 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 20:05:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:23,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 20:05:23,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:23,254 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 20:05:23,397 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 20:05:23,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918274807] [2024-09-12 20:05:23,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752235620] [2024-09-12 20:05:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752235620] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336361842] [2024-09-12 20:05:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:23,399 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:23,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:23,400 INFO L87 Difference]: Start difference. First operand 239 states and 260 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:24,107 INFO L93 Difference]: Finished difference Result 338 states and 344 transitions. [2024-09-12 20:05:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:24,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-09-12 20:05:24,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:24,110 INFO L225 Difference]: With dead ends: 338 [2024-09-12 20:05:24,110 INFO L226 Difference]: Without dead ends: 337 [2024-09-12 20:05:24,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:24,112 INFO L434 NwaCegarLoop]: 146 mSDtfsCounter, 245 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:24,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 751 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:05:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-09-12 20:05:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 239. [2024-09-12 20:05:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.7285714285714286) internal successors, (242), 226 states have internal predecessors, (242), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 259 transitions. [2024-09-12 20:05:24,150 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 259 transitions. Word has length 33 [2024-09-12 20:05:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:24,151 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 259 transitions. [2024-09-12 20:05:24,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:24,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 259 transitions. [2024-09-12 20:05:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 20:05:24,152 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:24,152 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:24,173 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:24,352 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:24,353 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_35_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1737630875, now seen corresponding path program 1 times [2024-09-12 20:05:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10980945] [2024-09-12 20:05:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:24,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452649299] [2024-09-12 20:05:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:24,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:24,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:24,383 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 20:05:24,385 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 20:05:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:24,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 20:05:24,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:24,462 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 20:05:24,564 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 20:05:24,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10980945] [2024-09-12 20:05:24,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452649299] [2024-09-12 20:05:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452649299] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842856249] [2024-09-12 20:05:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:24,567 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:24,570 INFO L87 Difference]: Start difference. First operand 239 states and 259 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:25,146 INFO L93 Difference]: Finished difference Result 337 states and 343 transitions. [2024-09-12 20:05:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-09-12 20:05:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:25,147 INFO L225 Difference]: With dead ends: 337 [2024-09-12 20:05:25,148 INFO L226 Difference]: Without dead ends: 336 [2024-09-12 20:05:25,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:25,148 INFO L434 NwaCegarLoop]: 153 mSDtfsCounter, 228 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:25,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 780 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:05:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-12 20:05:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 239. [2024-09-12 20:05:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.7214285714285715) internal successors, (241), 226 states have internal predecessors, (241), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 258 transitions. [2024-09-12 20:05:25,164 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 258 transitions. Word has length 34 [2024-09-12 20:05:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:25,164 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 258 transitions. [2024-09-12 20:05:25,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:25,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 258 transitions. [2024-09-12 20:05:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:05:25,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:25,166 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:25,178 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 20:05:25,369 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:25,370 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_35_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:25,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1968017538, now seen corresponding path program 1 times [2024-09-12 20:05:25,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:25,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024193492] [2024-09-12 20:05:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:25,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:25,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:25,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:25,497 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 20:05:25,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024193492] [2024-09-12 20:05:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024193492] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:25,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957175272] [2024-09-12 20:05:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:25,500 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:25,502 INFO L87 Difference]: Start difference. First operand 239 states and 258 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:25,786 INFO L93 Difference]: Finished difference Result 336 states and 342 transitions. [2024-09-12 20:05:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:25,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2024-09-12 20:05:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:25,788 INFO L225 Difference]: With dead ends: 336 [2024-09-12 20:05:25,788 INFO L226 Difference]: Without dead ends: 330 [2024-09-12 20:05:25,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:25,789 INFO L434 NwaCegarLoop]: 153 mSDtfsCounter, 178 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:25,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 765 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-09-12 20:05:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 239. [2024-09-12 20:05:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6785714285714286) internal successors, (235), 226 states have internal predecessors, (235), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 252 transitions. [2024-09-12 20:05:25,804 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 252 transitions. Word has length 35 [2024-09-12 20:05:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:25,805 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 252 transitions. [2024-09-12 20:05:25,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 252 transitions. [2024-09-12 20:05:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 20:05:25,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:25,806 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:25,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 20:05:25,806 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_35_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:25,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1678749476, now seen corresponding path program 1 times [2024-09-12 20:05:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804808411] [2024-09-12 20:05:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:25,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699804865] [2024-09-12 20:05:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:25,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:25,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:25,837 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 20:05:25,839 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 20:05:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:25,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 20:05:25,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:25,915 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 20:05:26,095 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 20:05:26,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804808411] [2024-09-12 20:05:26,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699804865] [2024-09-12 20:05:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699804865] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773679600] [2024-09-12 20:05:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:26,097 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:26,098 INFO L87 Difference]: Start difference. First operand 239 states and 252 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:26,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:26,856 INFO L93 Difference]: Finished difference Result 330 states and 336 transitions. [2024-09-12 20:05:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:26,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-09-12 20:05:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:26,859 INFO L225 Difference]: With dead ends: 330 [2024-09-12 20:05:26,859 INFO L226 Difference]: Without dead ends: 329 [2024-09-12 20:05:26,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:05:26,860 INFO L434 NwaCegarLoop]: 145 mSDtfsCounter, 205 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:26,860 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 867 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:05:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-09-12 20:05:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 239. [2024-09-12 20:05:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 226 states have internal predecessors, (234), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 251 transitions. [2024-09-12 20:05:26,883 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 251 transitions. Word has length 41 [2024-09-12 20:05:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:26,884 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 251 transitions. [2024-09-12 20:05:26,884 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:26,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:26,886 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 251 transitions. [2024-09-12 20:05:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 20:05:26,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:26,886 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:26,902 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 20:05:27,088 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 20:05:27,088 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_35_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:27,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 501626403, now seen corresponding path program 1 times [2024-09-12 20:05:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:27,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089578044] [2024-09-12 20:05:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292284062] [2024-09-12 20:05:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:27,120 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 20:05:27,126 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 20:05:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:27,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 20:05:27,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:27,206 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 20:05:27,337 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 20:05:27,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089578044] [2024-09-12 20:05:27,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292284062] [2024-09-12 20:05:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292284062] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:27,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:27,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:27,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189479446] [2024-09-12 20:05:27,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:27,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:27,340 INFO L87 Difference]: Start difference. First operand 239 states and 251 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:27,922 INFO L93 Difference]: Finished difference Result 329 states and 335 transitions. [2024-09-12 20:05:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2024-09-12 20:05:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:27,924 INFO L225 Difference]: With dead ends: 329 [2024-09-12 20:05:27,924 INFO L226 Difference]: Without dead ends: 328 [2024-09-12 20:05:27,924 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:05:27,924 INFO L434 NwaCegarLoop]: 153 mSDtfsCounter, 163 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:27,925 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 913 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 20:05:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-12 20:05:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 239. [2024-09-12 20:05:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6642857142857144) internal successors, (233), 226 states have internal predecessors, (233), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 250 transitions. [2024-09-12 20:05:27,939 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 250 transitions. Word has length 42 [2024-09-12 20:05:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:27,939 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 250 transitions. [2024-09-12 20:05:27,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:27,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 250 transitions. [2024-09-12 20:05:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 20:05:27,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:27,943 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:27,958 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 20:05:28,143 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 20:05:28,144 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_35_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:28,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1629450490, now seen corresponding path program 1 times [2024-09-12 20:05:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574703387] [2024-09-12 20:05:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,302 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 20:05:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574703387] [2024-09-12 20:05:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574703387] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:28,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:28,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912278968] [2024-09-12 20:05:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:28,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:28,303 INFO L87 Difference]: Start difference. First operand 239 states and 250 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:28,410 INFO L93 Difference]: Finished difference Result 326 states and 331 transitions. [2024-09-12 20:05:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:28,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2024-09-12 20:05:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:28,412 INFO L225 Difference]: With dead ends: 326 [2024-09-12 20:05:28,412 INFO L226 Difference]: Without dead ends: 324 [2024-09-12 20:05:28,412 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:28,413 INFO L434 NwaCegarLoop]: 184 mSDtfsCounter, 167 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:28,413 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 925 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:05:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-09-12 20:05:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 239. [2024-09-12 20:05:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.65) internal successors, (231), 226 states have internal predecessors, (231), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:28,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 248 transitions. [2024-09-12 20:05:28,425 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 248 transitions. Word has length 43 [2024-09-12 20:05:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:28,425 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 248 transitions. [2024-09-12 20:05:28,426 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:28,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 248 transitions. [2024-09-12 20:05:28,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 20:05:28,426 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:28,426 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:28,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 20:05:28,427 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_35_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:28,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1761148648, now seen corresponding path program 1 times [2024-09-12 20:05:28,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:28,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340550231] [2024-09-12 20:05:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:28,606 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 20:05:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340550231] [2024-09-12 20:05:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340550231] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045684335] [2024-09-12 20:05:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:28,608 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:28,608 INFO L87 Difference]: Start difference. First operand 239 states and 248 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:30,073 INFO L93 Difference]: Finished difference Result 324 states and 329 transitions. [2024-09-12 20:05:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2024-09-12 20:05:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:30,075 INFO L225 Difference]: With dead ends: 324 [2024-09-12 20:05:30,075 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 20:05:30,076 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:30,076 INFO L434 NwaCegarLoop]: 185 mSDtfsCounter, 163 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:30,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 997 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 20:05:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 20:05:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 239. [2024-09-12 20:05:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 226 states have internal predecessors, (230), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 247 transitions. [2024-09-12 20:05:30,089 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 247 transitions. Word has length 45 [2024-09-12 20:05:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:30,090 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 247 transitions. [2024-09-12 20:05:30,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:30,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 247 transitions. [2024-09-12 20:05:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 20:05:30,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:30,091 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:30,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 20:05:30,091 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_35_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:30,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1238966553, now seen corresponding path program 1 times [2024-09-12 20:05:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497081786] [2024-09-12 20:05:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:30,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:30,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:30,279 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 20:05:30,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:30,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497081786] [2024-09-12 20:05:30,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497081786] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:30,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:30,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618901051] [2024-09-12 20:05:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:30,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:30,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:30,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:30,280 INFO L87 Difference]: Start difference. First operand 239 states and 247 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:31,746 INFO L93 Difference]: Finished difference Result 323 states and 328 transitions. [2024-09-12 20:05:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:31,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-09-12 20:05:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:31,747 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:31,748 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:05:31,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:31,748 INFO L434 NwaCegarLoop]: 186 mSDtfsCounter, 160 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:31,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 873 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 20:05:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:05:31,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 239. [2024-09-12 20:05:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6357142857142857) internal successors, (229), 226 states have internal predecessors, (229), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 246 transitions. [2024-09-12 20:05:31,761 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 246 transitions. Word has length 46 [2024-09-12 20:05:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:31,761 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 246 transitions. [2024-09-12 20:05:31,761 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:31,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 246 transitions. [2024-09-12 20:05:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 20:05:31,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:31,762 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:31,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 20:05:31,762 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_35_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:31,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:31,762 INFO L85 PathProgramCache]: Analyzing trace with hash 246742730, now seen corresponding path program 1 times [2024-09-12 20:05:31,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:31,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79395601] [2024-09-12 20:05:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:31,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:31,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:31,933 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 20:05:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:31,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79395601] [2024-09-12 20:05:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79395601] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:31,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060321732] [2024-09-12 20:05:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:31,935 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:31,936 INFO L87 Difference]: Start difference. First operand 239 states and 246 transitions. Second operand has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:32,942 INFO L93 Difference]: Finished difference Result 324 states and 330 transitions. [2024-09-12 20:05:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:32,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2024-09-12 20:05:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:32,944 INFO L225 Difference]: With dead ends: 324 [2024-09-12 20:05:32,944 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 20:05:32,945 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:32,945 INFO L434 NwaCegarLoop]: 165 mSDtfsCounter, 141 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:32,945 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 763 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 20:05:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 20:05:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 239. [2024-09-12 20:05:32,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6285714285714286) internal successors, (228), 226 states have internal predecessors, (228), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 245 transitions. [2024-09-12 20:05:32,958 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 245 transitions. Word has length 47 [2024-09-12 20:05:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:32,959 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 245 transitions. [2024-09-12 20:05:32,959 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:32,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 245 transitions. [2024-09-12 20:05:32,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 20:05:32,960 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:32,960 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:32,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 20:05:32,960 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_27_to_35_0Err33ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:32,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:32,960 INFO L85 PathProgramCache]: Analyzing trace with hash -940909751, now seen corresponding path program 1 times [2024-09-12 20:05:32,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:32,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32371892] [2024-09-12 20:05:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:32,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:33,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:33,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:33,101 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 20:05:33,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32371892] [2024-09-12 20:05:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32371892] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:33,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:33,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034067942] [2024-09-12 20:05:33,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:33,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:33,103 INFO L87 Difference]: Start difference. First operand 239 states and 245 transitions. Second operand has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:33,784 INFO L93 Difference]: Finished difference Result 323 states and 329 transitions. [2024-09-12 20:05:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2024-09-12 20:05:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:33,786 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:33,786 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:05:33,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 20:05:33,787 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 135 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:33,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 756 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:05:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:05:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 239. [2024-09-12 20:05:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 140 states have (on average 1.6214285714285714) internal successors, (227), 226 states have internal predecessors, (227), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 244 transitions. [2024-09-12 20:05:33,800 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 244 transitions. Word has length 48 [2024-09-12 20:05:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:33,800 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 244 transitions. [2024-09-12 20:05:33,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:33,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 244 transitions. [2024-09-12 20:05:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 20:05:33,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:33,801 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:33,801 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-12 20:05:33,801 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:33,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -712917078, now seen corresponding path program 1 times [2024-09-12 20:05:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:33,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212187830] [2024-09-12 20:05:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470106346] [2024-09-12 20:05:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:33,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:33,816 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 20:05:33,817 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 20:05:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:33,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 20:05:33,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:33,896 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 20:05:33,899 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 20:05:34,272 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 20:05:34,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212187830] [2024-09-12 20:05:34,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:34,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470106346] [2024-09-12 20:05:34,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470106346] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:34,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:34,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-09-12 20:05:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954466445] [2024-09-12 20:05:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:34,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 20:05:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 20:05:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:05:34,274 INFO L87 Difference]: Start difference. First operand 239 states and 244 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:35,129 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2024-09-12 20:05:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 20:05:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2024-09-12 20:05:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:35,131 INFO L225 Difference]: With dead ends: 310 [2024-09-12 20:05:35,131 INFO L226 Difference]: Without dead ends: 308 [2024-09-12 20:05:35,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:05:35,131 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 148 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:35,132 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1157 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:05:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-09-12 20:05:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 243. [2024-09-12 20:05:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 143 states have (on average 1.6083916083916083) internal successors, (230), 229 states have internal predecessors, (230), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2024-09-12 20:05:35,153 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 52 [2024-09-12 20:05:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:35,154 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2024-09-12 20:05:35,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 20:05:35,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2024-09-12 20:05:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 20:05:35,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:35,155 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:35,168 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 20:05:35,359 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 20:05:35,359 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_27_to_35_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:35,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1021321476, now seen corresponding path program 1 times [2024-09-12 20:05:35,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:35,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189664036] [2024-09-12 20:05:35,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:35,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,525 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 20:05:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189664036] [2024-09-12 20:05:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189664036] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:35,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:35,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:35,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609233102] [2024-09-12 20:05:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:35,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:35,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:35,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:35,526 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:35,614 INFO L93 Difference]: Finished difference Result 327 states and 332 transitions. [2024-09-12 20:05:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:35,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2024-09-12 20:05:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:35,617 INFO L225 Difference]: With dead ends: 327 [2024-09-12 20:05:35,617 INFO L226 Difference]: Without dead ends: 326 [2024-09-12 20:05:35,617 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:35,618 INFO L434 NwaCegarLoop]: 192 mSDtfsCounter, 126 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:35,618 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 981 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:05:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-09-12 20:05:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2024-09-12 20:05:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 230 states have internal predecessors, (231), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2024-09-12 20:05:35,632 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 56 [2024-09-12 20:05:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:35,632 INFO L474 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2024-09-12 20:05:35,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:35,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2024-09-12 20:05:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-12 20:05:35,633 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:35,633 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:35,633 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-09-12 20:05:35,634 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_27_to_35_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:35,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1596194463, now seen corresponding path program 1 times [2024-09-12 20:05:35,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:35,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669218941] [2024-09-12 20:05:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:35,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:35,781 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 20:05:35,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:35,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669218941] [2024-09-12 20:05:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669218941] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376930226] [2024-09-12 20:05:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:35,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:35,782 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:35,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:35,871 INFO L93 Difference]: Finished difference Result 244 states and 248 transitions. [2024-09-12 20:05:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-09-12 20:05:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:35,874 INFO L225 Difference]: With dead ends: 244 [2024-09-12 20:05:35,874 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 20:05:35,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:35,874 INFO L434 NwaCegarLoop]: 189 mSDtfsCounter, 227 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:35,875 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 854 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:05:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 20:05:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-09-12 20:05:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 144 states have (on average 1.5972222222222223) internal successors, (230), 229 states have internal predecessors, (230), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2024-09-12 20:05:35,893 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 57 [2024-09-12 20:05:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:35,893 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 247 transitions. [2024-09-12 20:05:35,893 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 20:05:35,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 247 transitions. [2024-09-12 20:05:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 20:05:35,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:35,894 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:35,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-12 20:05:35,894 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_27_to_35_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2057579422, now seen corresponding path program 1 times [2024-09-12 20:05:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070660641] [2024-09-12 20:05:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,009 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 20:05:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070660641] [2024-09-12 20:05:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070660641] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12104988] [2024-09-12 20:05:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:36,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:36,011 INFO L87 Difference]: Start difference. First operand 243 states and 247 transitions. Second operand has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:36,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:36,154 INFO L93 Difference]: Finished difference Result 323 states and 328 transitions. [2024-09-12 20:05:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:36,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-09-12 20:05:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:36,156 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:36,156 INFO L226 Difference]: Without dead ends: 321 [2024-09-12 20:05:36,156 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 20:05:36,156 INFO L434 NwaCegarLoop]: 166 mSDtfsCounter, 121 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:36,156 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 807 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:05:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-09-12 20:05:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 246. [2024-09-12 20:05:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 147 states have (on average 1.5850340136054422) internal successors, (233), 232 states have internal predecessors, (233), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-12 20:05:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 250 transitions. [2024-09-12 20:05:36,179 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 250 transitions. Word has length 58 [2024-09-12 20:05:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:36,179 INFO L474 AbstractCegarLoop]: Abstraction has 246 states and 250 transitions. [2024-09-12 20:05:36,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:36,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 250 transitions. [2024-09-12 20:05:36,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 20:05:36,180 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:36,180 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:36,180 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 20:05:36,180 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:36,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -639644220, now seen corresponding path program 1 times [2024-09-12 20:05:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519659593] [2024-09-12 20:05:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:05:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:05:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:36,302 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 20:05:36,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:36,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519659593] [2024-09-12 20:05:36,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519659593] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:36,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:36,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690324340] [2024-09-12 20:05:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:36,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:36,303 INFO L87 Difference]: Start difference. First operand 246 states and 250 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:36,898 INFO L93 Difference]: Finished difference Result 323 states and 328 transitions. [2024-09-12 20:05:36,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:36,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 59 [2024-09-12 20:05:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:36,900 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:36,900 INFO L226 Difference]: Without dead ends: 313 [2024-09-12 20:05:36,900 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:36,901 INFO L434 NwaCegarLoop]: 134 mSDtfsCounter, 250 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:36,901 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 468 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:05:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-12 20:05:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 259. [2024-09-12 20:05:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 159 states have (on average 1.5408805031446542) internal successors, (245), 243 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 20:05:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 263 transitions. [2024-09-12 20:05:36,922 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 263 transitions. Word has length 59 [2024-09-12 20:05:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:36,923 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 263 transitions. [2024-09-12 20:05:36,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:36,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 263 transitions. [2024-09-12 20:05:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 20:05:36,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:36,923 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:36,924 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-09-12 20:05:36,924 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_27_to_35_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1648875584, now seen corresponding path program 1 times [2024-09-12 20:05:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46322570] [2024-09-12 20:05:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:36,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189447619] [2024-09-12 20:05:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:36,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:36,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:36,943 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 20:05:36,944 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 20:05:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 20:05:37,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:37,040 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 20:05:37,134 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 20:05:37,145 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 20:05:37,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46322570] [2024-09-12 20:05:37,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189447619] [2024-09-12 20:05:37,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189447619] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:37,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:37,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:37,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44336864] [2024-09-12 20:05:37,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:37,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:37,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:37,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:37,146 INFO L87 Difference]: Start difference. First operand 259 states and 263 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 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 20:05:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:37,417 INFO L93 Difference]: Finished difference Result 315 states and 321 transitions. [2024-09-12 20:05:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:05:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 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 60 [2024-09-12 20:05:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:37,419 INFO L225 Difference]: With dead ends: 315 [2024-09-12 20:05:37,419 INFO L226 Difference]: Without dead ends: 313 [2024-09-12 20:05:37,419 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-09-12 20:05:37,419 INFO L434 NwaCegarLoop]: 145 mSDtfsCounter, 370 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:37,420 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 714 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-12 20:05:37,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 257. [2024-09-12 20:05:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 159 states have (on average 1.528301886792453) internal successors, (243), 241 states have internal predecessors, (243), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 20:05:37,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2024-09-12 20:05:37,450 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 60 [2024-09-12 20:05:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:37,450 INFO L474 AbstractCegarLoop]: Abstraction has 257 states and 261 transitions. [2024-09-12 20:05:37,451 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 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 20:05:37,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 261 transitions. [2024-09-12 20:05:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 20:05:37,451 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:37,451 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:37,467 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 20:05:37,657 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:37,658 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_27_to_35_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:37,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash -424464219, now seen corresponding path program 1 times [2024-09-12 20:05:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143736730] [2024-09-12 20:05:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:37,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814489150] [2024-09-12 20:05:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:37,675 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 20:05:37,676 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 20:05:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:37,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 20:05:37,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:37,769 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 20:05:37,869 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 20:05:37,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:37,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143736730] [2024-09-12 20:05:37,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814489150] [2024-09-12 20:05:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814489150] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 20:05:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525593807] [2024-09-12 20:05:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:37,870 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 20:05:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 20:05:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:37,871 INFO L87 Difference]: Start difference. First operand 257 states and 261 transitions. Second operand has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 20:05:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:38,170 INFO L93 Difference]: Finished difference Result 331 states and 341 transitions. [2024-09-12 20:05:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:05:38,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 61 [2024-09-12 20:05:38,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:38,171 INFO L225 Difference]: With dead ends: 331 [2024-09-12 20:05:38,171 INFO L226 Difference]: Without dead ends: 330 [2024-09-12 20:05:38,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:38,172 INFO L434 NwaCegarLoop]: 148 mSDtfsCounter, 122 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:38,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 819 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-09-12 20:05:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 294. [2024-09-12 20:05:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 193 states have (on average 1.5854922279792747) internal successors, (306), 276 states have internal predecessors, (306), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 327 transitions. [2024-09-12 20:05:38,202 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 327 transitions. Word has length 61 [2024-09-12 20:05:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:38,202 INFO L474 AbstractCegarLoop]: Abstraction has 294 states and 327 transitions. [2024-09-12 20:05:38,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 20:05:38,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 327 transitions. [2024-09-12 20:05:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 20:05:38,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:38,203 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:38,219 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 20:05:38,407 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:38,408 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_27_to_35_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:38,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash -273488670, now seen corresponding path program 1 times [2024-09-12 20:05:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531030894] [2024-09-12 20:05:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:38,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083568301] [2024-09-12 20:05:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:38,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:38,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:38,434 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 20:05:38,439 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 20:05:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:38,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 20:05:38,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:38,544 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 20:05:38,548 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 20:05:38,744 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 36 treesize of output 13 [2024-09-12 20:05:38,761 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 29 treesize of output 13 [2024-09-12 20:05:38,773 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 20:05:38,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531030894] [2024-09-12 20:05:38,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083568301] [2024-09-12 20:05:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083568301] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:38,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:05:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779690264] [2024-09-12 20:05:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:38,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:05:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:05:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:38,774 INFO L87 Difference]: Start difference. First operand 294 states and 327 transitions. Second operand has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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 20:05:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:39,166 INFO L93 Difference]: Finished difference Result 331 states and 340 transitions. [2024-09-12 20:05:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:05:39,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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 62 [2024-09-12 20:05:39,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:39,168 INFO L225 Difference]: With dead ends: 331 [2024-09-12 20:05:39,168 INFO L226 Difference]: Without dead ends: 330 [2024-09-12 20:05:39,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:05:39,168 INFO L434 NwaCegarLoop]: 146 mSDtfsCounter, 127 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:39,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1284 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-09-12 20:05:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 295. [2024-09-12 20:05:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 277 states have internal predecessors, (307), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 328 transitions. [2024-09-12 20:05:39,212 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 328 transitions. Word has length 62 [2024-09-12 20:05:39,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:39,213 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 328 transitions. [2024-09-12 20:05:39,213 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.75) internal successors, (54), 9 states have internal predecessors, (54), 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 20:05:39,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 328 transitions. [2024-09-12 20:05:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 20:05:39,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:39,214 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:39,228 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 20:05:39,414 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:39,415 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_27_to_35_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:39,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 111786055, now seen corresponding path program 1 times [2024-09-12 20:05:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875516691] [2024-09-12 20:05:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:39,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978902606] [2024-09-12 20:05:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:39,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:39,437 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 20:05:39,440 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 20:05:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:39,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 20:05:39,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:39,529 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 20:05:39,600 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 20:05:39,629 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 20:05:39,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875516691] [2024-09-12 20:05:39,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978902606] [2024-09-12 20:05:39,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978902606] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:39,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:39,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-12 20:05:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97239810] [2024-09-12 20:05:39,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:39,630 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:05:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:05:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:05:39,630 INFO L87 Difference]: Start difference. First operand 295 states and 328 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 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 20:05:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:39,950 INFO L93 Difference]: Finished difference Result 331 states and 339 transitions. [2024-09-12 20:05:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 20:05:39,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 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 63 [2024-09-12 20:05:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:39,954 INFO L225 Difference]: With dead ends: 331 [2024-09-12 20:05:39,954 INFO L226 Difference]: Without dead ends: 330 [2024-09-12 20:05:39,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-12 20:05:39,955 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 192 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:39,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 888 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-09-12 20:05:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 296. [2024-09-12 20:05:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 195 states have (on average 1.5794871794871794) internal successors, (308), 278 states have internal predecessors, (308), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 329 transitions. [2024-09-12 20:05:39,987 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 329 transitions. Word has length 63 [2024-09-12 20:05:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:39,987 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 329 transitions. [2024-09-12 20:05:39,987 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 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 20:05:39,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 329 transitions. [2024-09-12 20:05:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 20:05:39,988 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:39,988 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:40,001 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 20:05:40,188 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 20:05:40,189 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_27_to_35_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:40,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash -829599356, now seen corresponding path program 1 times [2024-09-12 20:05:40,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:40,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316022181] [2024-09-12 20:05:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:40,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952385959] [2024-09-12 20:05:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:40,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:40,205 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 20:05:40,207 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 20:05:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:40,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 20:05:40,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:40,297 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 20:05:40,374 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 36 treesize of output 13 [2024-09-12 20:05:40,411 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 36 treesize of output 16 [2024-09-12 20:05:40,428 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 20:05:40,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316022181] [2024-09-12 20:05:40,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952385959] [2024-09-12 20:05:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952385959] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:40,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:40,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:05:40,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6318998] [2024-09-12 20:05:40,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:40,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:05:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:05:40,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:40,430 INFO L87 Difference]: Start difference. First operand 296 states and 329 transitions. Second operand has 10 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 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 20:05:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:40,698 INFO L93 Difference]: Finished difference Result 324 states and 332 transitions. [2024-09-12 20:05:40,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 20:05:40,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 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 64 [2024-09-12 20:05:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:40,700 INFO L225 Difference]: With dead ends: 324 [2024-09-12 20:05:40,700 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:05:40,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-09-12 20:05:40,701 INFO L434 NwaCegarLoop]: 145 mSDtfsCounter, 366 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:40,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 776 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:05:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 294. [2024-09-12 20:05:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 195 states have (on average 1.5692307692307692) internal successors, (306), 276 states have internal predecessors, (306), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 327 transitions. [2024-09-12 20:05:40,733 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 327 transitions. Word has length 64 [2024-09-12 20:05:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:40,733 INFO L474 AbstractCegarLoop]: Abstraction has 294 states and 327 transitions. [2024-09-12 20:05:40,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 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 20:05:40,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 327 transitions. [2024-09-12 20:05:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 20:05:40,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:40,734 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:40,748 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 20:05:40,934 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 20:05:40,934 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_27_to_35_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:40,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash 52223977, now seen corresponding path program 1 times [2024-09-12 20:05:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511333355] [2024-09-12 20:05:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240078693] [2024-09-12 20:05:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:40,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:40,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:40,951 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 20:05:40,953 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 20:05:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 20:05:41,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:41,043 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 20:05:41,133 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 20:05:41,187 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 20:05:41,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:41,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:41,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511333355] [2024-09-12 20:05:41,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:41,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240078693] [2024-09-12 20:05:41,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240078693] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:41,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 20:05:41,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721038394] [2024-09-12 20:05:41,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:41,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 20:05:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 20:05:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:41,189 INFO L87 Difference]: Start difference. First operand 294 states and 327 transitions. Second operand has 10 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 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 20:05:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:41,542 INFO L93 Difference]: Finished difference Result 329 states and 335 transitions. [2024-09-12 20:05:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 20:05:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 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 65 [2024-09-12 20:05:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:41,544 INFO L225 Difference]: With dead ends: 329 [2024-09-12 20:05:41,544 INFO L226 Difference]: Without dead ends: 328 [2024-09-12 20:05:41,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-12 20:05:41,544 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 126 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:41,544 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1057 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 20:05:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-12 20:05:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 296. [2024-09-12 20:05:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 197 states have (on average 1.5634517766497462) internal successors, (308), 278 states have internal predecessors, (308), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 329 transitions. [2024-09-12 20:05:41,578 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 329 transitions. Word has length 65 [2024-09-12 20:05:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:41,578 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 329 transitions. [2024-09-12 20:05:41,578 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.125) internal successors, (57), 9 states have internal predecessors, (57), 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 20:05:41,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 329 transitions. [2024-09-12 20:05:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-12 20:05:41,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:41,579 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:41,591 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 20:05:41,779 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:41,779 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_27_to_35_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:41,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1618943526, now seen corresponding path program 1 times [2024-09-12 20:05:41,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171226324] [2024-09-12 20:05:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:41,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:41,973 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 20:05:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171226324] [2024-09-12 20:05:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171226324] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:41,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:41,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:41,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542230555] [2024-09-12 20:05:41,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:41,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:41,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:41,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:41,975 INFO L87 Difference]: Start difference. First operand 296 states and 329 transitions. Second operand has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:42,698 INFO L93 Difference]: Finished difference Result 318 states and 333 transitions. [2024-09-12 20:05:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2024-09-12 20:05:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:42,700 INFO L225 Difference]: With dead ends: 318 [2024-09-12 20:05:42,700 INFO L226 Difference]: Without dead ends: 317 [2024-09-12 20:05:42,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 20:05:42,701 INFO L434 NwaCegarLoop]: 187 mSDtfsCounter, 106 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:42,701 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 958 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:05:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-09-12 20:05:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 297. [2024-09-12 20:05:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 198 states have (on average 1.5606060606060606) internal successors, (309), 279 states have internal predecessors, (309), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 330 transitions. [2024-09-12 20:05:42,742 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 330 transitions. Word has length 66 [2024-09-12 20:05:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:42,742 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 330 transitions. [2024-09-12 20:05:42,742 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 330 transitions. [2024-09-12 20:05:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 20:05:42,743 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:42,743 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:42,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-09-12 20:05:42,743 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_27_to_35_0Err45ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:42,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:42,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1352358005, now seen corresponding path program 1 times [2024-09-12 20:05:42,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083308064] [2024-09-12 20:05:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:42,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:42,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:42,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:42,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:42,950 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 20:05:42,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083308064] [2024-09-12 20:05:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083308064] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:42,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:05:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069381349] [2024-09-12 20:05:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:42,951 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:05:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:05:42,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:42,951 INFO L87 Difference]: Start difference. First operand 297 states and 330 transitions. Second operand has 6 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:43,158 INFO L93 Difference]: Finished difference Result 317 states and 332 transitions. [2024-09-12 20:05:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:05:43,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-09-12 20:05:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:43,160 INFO L225 Difference]: With dead ends: 317 [2024-09-12 20:05:43,160 INFO L226 Difference]: Without dead ends: 316 [2024-09-12 20:05:43,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:43,161 INFO L434 NwaCegarLoop]: 188 mSDtfsCounter, 101 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:43,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 919 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-09-12 20:05:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2024-09-12 20:05:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 1.5577889447236182) internal successors, (310), 280 states have internal predecessors, (310), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 331 transitions. [2024-09-12 20:05:43,199 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 331 transitions. Word has length 67 [2024-09-12 20:05:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:43,199 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 331 transitions. [2024-09-12 20:05:43,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:43,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 331 transitions. [2024-09-12 20:05:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-12 20:05:43,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:43,200 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:43,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-09-12 20:05:43,200 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:43,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1955039858, now seen corresponding path program 1 times [2024-09-12 20:05:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:43,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180117907] [2024-09-12 20:05:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:05:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:05:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,330 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 20:05:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180117907] [2024-09-12 20:05:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180117907] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:43,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977952420] [2024-09-12 20:05:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:43,331 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:43,332 INFO L87 Difference]: Start difference. First operand 298 states and 331 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:43,571 INFO L93 Difference]: Finished difference Result 324 states and 331 transitions. [2024-09-12 20:05:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:43,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 69 [2024-09-12 20:05:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:43,573 INFO L225 Difference]: With dead ends: 324 [2024-09-12 20:05:43,573 INFO L226 Difference]: Without dead ends: 323 [2024-09-12 20:05:43,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:43,574 INFO L434 NwaCegarLoop]: 118 mSDtfsCounter, 260 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:43,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 425 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 20:05:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-12 20:05:43,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 298. [2024-09-12 20:05:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 1.5527638190954773) internal successors, (309), 280 states have internal predecessors, (309), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 330 transitions. [2024-09-12 20:05:43,609 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 330 transitions. Word has length 69 [2024-09-12 20:05:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:43,609 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 330 transitions. [2024-09-12 20:05:43,610 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:43,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 330 transitions. [2024-09-12 20:05:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 20:05:43,610 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:43,610 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:43,611 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-12 20:05:43,611 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:43,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -476693388, now seen corresponding path program 1 times [2024-09-12 20:05:43,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:43,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579505206] [2024-09-12 20:05:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:43,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:05:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 20:05:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:43,739 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 20:05:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:43,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579505206] [2024-09-12 20:05:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579505206] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:05:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182962059] [2024-09-12 20:05:43,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:43,740 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:05:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:05:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:05:43,741 INFO L87 Difference]: Start difference. First operand 298 states and 330 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:44,241 INFO L93 Difference]: Finished difference Result 323 states and 330 transitions. [2024-09-12 20:05:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 20:05:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2024-09-12 20:05:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:44,243 INFO L225 Difference]: With dead ends: 323 [2024-09-12 20:05:44,243 INFO L226 Difference]: Without dead ends: 322 [2024-09-12 20:05:44,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-12 20:05:44,243 INFO L434 NwaCegarLoop]: 119 mSDtfsCounter, 218 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:44,243 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 535 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:05:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-09-12 20:05:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 298. [2024-09-12 20:05:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 1.5477386934673367) internal successors, (308), 280 states have internal predecessors, (308), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 329 transitions. [2024-09-12 20:05:44,279 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 329 transitions. Word has length 70 [2024-09-12 20:05:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:44,279 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 329 transitions. [2024-09-12 20:05:44,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:44,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 329 transitions. [2024-09-12 20:05:44,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 20:05:44,280 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:44,280 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:44,280 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 20:05:44,280 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_27_to_35_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:44,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1764184492, now seen corresponding path program 1 times [2024-09-12 20:05:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611896245] [2024-09-12 20:05:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:44,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:44,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:44,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:44,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:44,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611896245] [2024-09-12 20:05:44,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611896245] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:44,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545529120] [2024-09-12 20:05:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:44,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:44,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:44,508 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 20:05:44,509 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 20:05:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:44,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 20:05:44,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:44,710 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 38 treesize of output 15 [2024-09-12 20:05:44,751 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 20:05:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:44,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545529120] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:44,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 20:05:44,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-09-12 20:05:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929082255] [2024-09-12 20:05:44,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:44,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 20:05:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 20:05:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:05:44,937 INFO L87 Difference]: Start difference. First operand 298 states and 329 transitions. Second operand has 21 states, 19 states have (on average 9.0) internal successors, (171), 17 states have internal predecessors, (171), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:05:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:45,653 INFO L93 Difference]: Finished difference Result 325 states and 336 transitions. [2024-09-12 20:05:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 20:05:45,654 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 9.0) internal successors, (171), 17 states have internal predecessors, (171), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 71 [2024-09-12 20:05:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:45,655 INFO L225 Difference]: With dead ends: 325 [2024-09-12 20:05:45,655 INFO L226 Difference]: Without dead ends: 324 [2024-09-12 20:05:45,655 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-09-12 20:05:45,661 INFO L434 NwaCegarLoop]: 152 mSDtfsCounter, 630 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:45,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1443 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:05:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-09-12 20:05:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2024-09-12 20:05:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 199 states have (on average 1.5427135678391959) internal successors, (307), 279 states have internal predecessors, (307), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 328 transitions. [2024-09-12 20:05:45,706 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 328 transitions. Word has length 71 [2024-09-12 20:05:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:45,706 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 328 transitions. [2024-09-12 20:05:45,706 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 9.0) internal successors, (171), 17 states have internal predecessors, (171), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 20:05:45,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 328 transitions. [2024-09-12 20:05:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 20:05:45,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:45,707 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:45,720 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 20:05:45,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 20:05:45,908 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:45,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1892593072, now seen corresponding path program 1 times [2024-09-12 20:05:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884864022] [2024-09-12 20:05:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791397323] [2024-09-12 20:05:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:45,931 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 20:05:45,932 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 20:05:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:46,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 20:05:46,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:46,029 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 20:05:46,089 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 20:05:46,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:46,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:46,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884864022] [2024-09-12 20:05:46,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:46,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791397323] [2024-09-12 20:05:46,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791397323] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:46,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:05:46,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:05:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024007028] [2024-09-12 20:05:46,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:46,090 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:05:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:46,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:05:46,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:05:46,091 INFO L87 Difference]: Start difference. First operand 297 states and 328 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:46,541 INFO L93 Difference]: Finished difference Result 321 states and 328 transitions. [2024-09-12 20:05:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:05:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2024-09-12 20:05:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:46,543 INFO L225 Difference]: With dead ends: 321 [2024-09-12 20:05:46,544 INFO L226 Difference]: Without dead ends: 315 [2024-09-12 20:05:46,544 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:05:46,544 INFO L434 NwaCegarLoop]: 133 mSDtfsCounter, 122 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:46,544 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 460 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:05:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-12 20:05:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 297. [2024-09-12 20:05:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 199 states have (on average 1.5125628140703518) internal successors, (301), 279 states have internal predecessors, (301), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 322 transitions. [2024-09-12 20:05:46,587 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 322 transitions. Word has length 71 [2024-09-12 20:05:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:46,588 INFO L474 AbstractCegarLoop]: Abstraction has 297 states and 322 transitions. [2024-09-12 20:05:46,588 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:46,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 322 transitions. [2024-09-12 20:05:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-12 20:05:46,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:46,591 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:46,605 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 20:05:46,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:46,792 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_27_to_35_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:46,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1144855743, now seen corresponding path program 1 times [2024-09-12 20:05:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:46,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122856019] [2024-09-12 20:05:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:46,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:05:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:46,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 20:05:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:46,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 20:05:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122856019] [2024-09-12 20:05:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122856019] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:05:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787398250] [2024-09-12 20:05:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:46,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:46,994 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 20:05:46,997 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 20:05:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:47,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 20:05:47,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:47,174 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 36 treesize of output 13 [2024-09-12 20:05:47,205 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 20:05:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:47,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:05:47,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787398250] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:05:47,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:05:47,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-09-12 20:05:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040544110] [2024-09-12 20:05:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:05:47,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 20:05:47,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:47,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 20:05:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-09-12 20:05:47,215 INFO L87 Difference]: Start difference. First operand 297 states and 322 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:51,339 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 20:05:56,781 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 20:05:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:05:56,812 INFO L93 Difference]: Finished difference Result 300 states and 329 transitions. [2024-09-12 20:05:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 20:05:56,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-09-12 20:05:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:05:56,814 INFO L225 Difference]: With dead ends: 300 [2024-09-12 20:05:56,814 INFO L226 Difference]: Without dead ends: 298 [2024-09-12 20:05:56,814 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:05:56,815 INFO L434 NwaCegarLoop]: 141 mSDtfsCounter, 349 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:05:56,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 724 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 534 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2024-09-12 20:05:56,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-09-12 20:05:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 295. [2024-09-12 20:05:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 199 states have (on average 1.5025125628140703) internal successors, (299), 277 states have internal predecessors, (299), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:05:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 320 transitions. [2024-09-12 20:05:56,860 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 320 transitions. Word has length 72 [2024-09-12 20:05:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:05:56,860 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 320 transitions. [2024-09-12 20:05:56,860 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:05:56,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 320 transitions. [2024-09-12 20:05:56,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 20:05:56,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:05:56,861 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:05:56,874 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 20:05:57,062 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:57,062 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_27_to_35_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:05:57,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:05:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1130789814, now seen corresponding path program 1 times [2024-09-12 20:05:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:05:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619627927] [2024-09-12 20:05:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:57,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:05:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:05:57,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867040159] [2024-09-12 20:05:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:05:57,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:05:57,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:05:57,080 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 20:05:57,081 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 20:05:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:05:57,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 20:05:57,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:05:57,185 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 20:05:57,264 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 36 treesize of output 13 [2024-09-12 20:05:57,299 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 22 treesize of output 10 [2024-09-12 20:05:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:57,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:05:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:05:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:05:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619627927] [2024-09-12 20:05:57,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:05:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867040159] [2024-09-12 20:05:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867040159] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:05:57,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:05:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-12 20:05:57,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983764829] [2024-09-12 20:05:57,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:05:57,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 20:05:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:05:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 20:05:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-12 20:05:57,698 INFO L87 Difference]: Start difference. First operand 295 states and 320 transitions. Second operand has 17 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:05:59,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:06:00,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:06:02,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:06:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:04,308 INFO L93 Difference]: Finished difference Result 316 states and 327 transitions. [2024-09-12 20:06:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:06:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2024-09-12 20:06:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:04,310 INFO L225 Difference]: With dead ends: 316 [2024-09-12 20:06:04,310 INFO L226 Difference]: Without dead ends: 315 [2024-09-12 20:06:04,311 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-09-12 20:06:04,312 INFO L434 NwaCegarLoop]: 152 mSDtfsCounter, 550 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:04,312 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1382 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 892 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2024-09-12 20:06:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-12 20:06:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 294. [2024-09-12 20:06:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 199 states have (on average 1.4974874371859297) internal successors, (298), 276 states have internal predecessors, (298), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-12 20:06:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 319 transitions. [2024-09-12 20:06:04,373 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 319 transitions. Word has length 73 [2024-09-12 20:06:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:04,373 INFO L474 AbstractCegarLoop]: Abstraction has 294 states and 319 transitions. [2024-09-12 20:06:04,374 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.714285714285714) internal successors, (122), 14 states have internal predecessors, (122), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:04,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 319 transitions. [2024-09-12 20:06:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 20:06:04,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:04,375 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:04,390 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 20:06:04,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 20:06:04,576 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_27_to_35_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:06:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 694746017, now seen corresponding path program 1 times [2024-09-12 20:06:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701917438] [2024-09-12 20:06:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580430521] [2024-09-12 20:06:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:04,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:04,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:04,609 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 20:06:04,612 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 20:06:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:04,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 20:06:04,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:04,718 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 20:06:04,780 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 20:06:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:04,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701917438] [2024-09-12 20:06:09,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580430521] [2024-09-12 20:06:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580430521] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:09,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:06:09,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 20:06:09,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701646101] [2024-09-12 20:06:09,411 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:09,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 20:06:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:09,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 20:06:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=221, Unknown=1, NotChecked=0, Total=272 [2024-09-12 20:06:09,412 INFO L87 Difference]: Start difference. First operand 294 states and 319 transitions. Second operand has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:10,280 INFO L93 Difference]: Finished difference Result 396 states and 403 transitions. [2024-09-12 20:06:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 20:06:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2024-09-12 20:06:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:10,282 INFO L225 Difference]: With dead ends: 396 [2024-09-12 20:06:10,282 INFO L226 Difference]: Without dead ends: 395 [2024-09-12 20:06:10,283 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=99, Invalid=362, Unknown=1, NotChecked=0, Total=462 [2024-09-12 20:06:10,283 INFO L434 NwaCegarLoop]: 159 mSDtfsCounter, 357 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:10,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1075 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:06:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-12 20:06:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 338. [2024-09-12 20:06:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 239 states have (on average 1.5439330543933054) internal successors, (369), 317 states have internal predecessors, (369), 13 states have call successors, (13), 9 states have call predecessors, (13), 10 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-12 20:06:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 396 transitions. [2024-09-12 20:06:10,341 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 396 transitions. Word has length 74 [2024-09-12 20:06:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:10,341 INFO L474 AbstractCegarLoop]: Abstraction has 338 states and 396 transitions. [2024-09-12 20:06:10,341 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:10,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 396 transitions. [2024-09-12 20:06:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-12 20:06:10,345 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:10,345 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:10,358 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 20:06:10,545 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:10,546 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_27_to_35_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:06:10,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 62290200, now seen corresponding path program 1 times [2024-09-12 20:06:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995964016] [2024-09-12 20:06:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349036893] [2024-09-12 20:06:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:10,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:10,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:10,577 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 20:06:10,578 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 20:06:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:10,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 20:06:10,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:10,686 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 20:06:10,765 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 36 treesize of output 13 [2024-09-12 20:06:10,827 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 29 treesize of output 13 [2024-09-12 20:06:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:10,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995964016] [2024-09-12 20:06:24,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349036893] [2024-09-12 20:06:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349036893] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:06:24,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:06:24,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-09-12 20:06:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434982544] [2024-09-12 20:06:24,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:24,310 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 20:06:24,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 20:06:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=306, Unknown=3, NotChecked=0, Total=380 [2024-09-12 20:06:24,310 INFO L87 Difference]: Start difference. First operand 338 states and 396 transitions. Second operand has 20 states, 17 states have (on average 7.470588235294118) internal successors, (127), 17 states have internal predecessors, (127), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:30,078 INFO L93 Difference]: Finished difference Result 358 states and 399 transitions. [2024-09-12 20:06:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 20:06:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.470588235294118) internal successors, (127), 17 states have internal predecessors, (127), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2024-09-12 20:06:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:30,080 INFO L225 Difference]: With dead ends: 358 [2024-09-12 20:06:30,080 INFO L226 Difference]: Without dead ends: 357 [2024-09-12 20:06:30,080 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=224, Invalid=703, Unknown=3, NotChecked=0, Total=930 [2024-09-12 20:06:30,081 INFO L434 NwaCegarLoop]: 152 mSDtfsCounter, 695 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:30,081 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1343 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-09-12 20:06:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-09-12 20:06:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 339. [2024-09-12 20:06:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 240 states have (on average 1.5333333333333334) internal successors, (368), 317 states have internal predecessors, (368), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 20:06:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 397 transitions. [2024-09-12 20:06:30,148 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 397 transitions. Word has length 75 [2024-09-12 20:06:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:30,148 INFO L474 AbstractCegarLoop]: Abstraction has 339 states and 397 transitions. [2024-09-12 20:06:30,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.470588235294118) internal successors, (127), 17 states have internal predecessors, (127), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:06:30,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 397 transitions. [2024-09-12 20:06:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-12 20:06:30,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:30,151 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:30,164 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 20:06:30,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:30,352 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_27_to_35_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:06:30,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1930996355, now seen corresponding path program 1 times [2024-09-12 20:06:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300164481] [2024-09-12 20:06:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:30,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628933352] [2024-09-12 20:06:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:30,381 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 20:06:30,382 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 20:06:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:30,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 20:06:30,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:30,507 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 20:06:30,600 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 20:06:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:30,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:06:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:06:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300164481] [2024-09-12 20:06:32,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:06:32,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628933352] [2024-09-12 20:06:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628933352] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:06:32,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:06:32,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-09-12 20:06:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892535384] [2024-09-12 20:06:32,530 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:06:32,530 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 20:06:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:06:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 20:06:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-09-12 20:06:32,531 INFO L87 Difference]: Start difference. First operand 339 states and 397 transitions. Second operand has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:06:33,654 INFO L93 Difference]: Finished difference Result 395 states and 403 transitions. [2024-09-12 20:06:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 20:06:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2024-09-12 20:06:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:06:33,656 INFO L225 Difference]: With dead ends: 395 [2024-09-12 20:06:33,656 INFO L226 Difference]: Without dead ends: 394 [2024-09-12 20:06:33,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-09-12 20:06:33,657 INFO L434 NwaCegarLoop]: 158 mSDtfsCounter, 295 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 20:06:33,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1476 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 20:06:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-09-12 20:06:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 339. [2024-09-12 20:06:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 240 states have (on average 1.5291666666666666) internal successors, (367), 317 states have internal predecessors, (367), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 20:06:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 396 transitions. [2024-09-12 20:06:33,722 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 396 transitions. Word has length 76 [2024-09-12 20:06:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:06:33,722 INFO L474 AbstractCegarLoop]: Abstraction has 339 states and 396 transitions. [2024-09-12 20:06:33,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:06:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 396 transitions. [2024-09-12 20:06:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 20:06:33,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:06:33,723 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:06:33,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 20:06:33,923 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 20:06:33,924 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_27_to_35_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:06:33,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:06:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash -268654982, now seen corresponding path program 1 times [2024-09-12 20:06:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:06:33,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073162842] [2024-09-12 20:06:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:33,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:06:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:06:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868532207] [2024-09-12 20:06:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:06:33,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:06:33,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:06:33,943 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 20:06:33,944 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 20:06:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:06:34,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 20:06:34,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:06:34,050 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 20:06:34,128 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 36 treesize of output 13 [2024-09-12 20:06:34,193 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 36 treesize of output 16 [2024-09-12 20:06:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:06:34,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:07:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:07:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:07:21,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073162842] [2024-09-12 20:07:21,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:07:21,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868532207] [2024-09-12 20:07:21,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868532207] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 20:07:21,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 20:07:21,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-09-12 20:07:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916005082] [2024-09-12 20:07:21,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 20:07:21,379 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 20:07:21,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:07:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 20:07:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=366, Unknown=11, NotChecked=0, Total=462 [2024-09-12 20:07:21,379 INFO L87 Difference]: Start difference. First operand 339 states and 396 transitions. Second operand has 22 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:07:40,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:07:44,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:07:46,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:07:50,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:07:54,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:07:58,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:02,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:06,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:10,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:14,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:18,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:23,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:31,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:33,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:37,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:41,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:44,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:48,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:52,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:08:56,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:00,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:04,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:09,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:13,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:17,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:21,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-09-12 20:09:25,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2024-09-12 20:09:33,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:33,939 INFO L93 Difference]: Finished difference Result 357 states and 396 transitions. [2024-09-12 20:09:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 20:09:33,940 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 77 [2024-09-12 20:09:33,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:33,941 INFO L225 Difference]: With dead ends: 357 [2024-09-12 20:09:33,941 INFO L226 Difference]: Without dead ends: 356 [2024-09-12 20:09:33,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=296, Invalid=953, Unknown=11, NotChecked=0, Total=1260 [2024-09-12 20:09:33,942 INFO L434 NwaCegarLoop]: 152 mSDtfsCounter, 844 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 21 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.9s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:33,942 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1365 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 795 Invalid, 27 Unknown, 0 Unchecked, 112.9s Time] [2024-09-12 20:09:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-09-12 20:09:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 338. [2024-09-12 20:09:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 240 states have (on average 1.5208333333333333) internal successors, (365), 316 states have internal predecessors, (365), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 20:09:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 394 transitions. [2024-09-12 20:09:34,020 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 394 transitions. Word has length 77 [2024-09-12 20:09:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:34,020 INFO L474 AbstractCegarLoop]: Abstraction has 338 states and 394 transitions. [2024-09-12 20:09:34,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:09:34,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 394 transitions. [2024-09-12 20:09:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 20:09:34,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:34,021 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:34,034 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 20:09:34,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 20:09:34,222 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:09:34,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1760229526, now seen corresponding path program 1 times [2024-09-12 20:09:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997165731] [2024-09-12 20:09:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:09:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535184142] [2024-09-12 20:09:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:09:34,244 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 20:09:34,245 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 20:09:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:34,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 20:09:34,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:09:34,348 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 20:09:34,426 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 20:09:34,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:09:34,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:09:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997165731] [2024-09-12 20:09:34,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:09:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535184142] [2024-09-12 20:09:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535184142] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:09:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:09:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 20:09:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782776527] [2024-09-12 20:09:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:09:34,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 20:09:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:09:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 20:09:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:09:34,428 INFO L87 Difference]: Start difference. First operand 338 states and 394 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:09:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:34,907 INFO L93 Difference]: Finished difference Result 356 states and 394 transitions. [2024-09-12 20:09:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 20:09:34,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 77 [2024-09-12 20:09:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:34,909 INFO L225 Difference]: With dead ends: 356 [2024-09-12 20:09:34,909 INFO L226 Difference]: Without dead ends: 354 [2024-09-12 20:09:34,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:09:34,910 INFO L434 NwaCegarLoop]: 131 mSDtfsCounter, 105 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:34,910 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 574 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 20:09:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-09-12 20:09:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 338. [2024-09-12 20:09:34,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 240 states have (on average 1.5125) internal successors, (363), 316 states have internal predecessors, (363), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 20:09:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 392 transitions. [2024-09-12 20:09:34,984 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 392 transitions. Word has length 77 [2024-09-12 20:09:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:34,984 INFO L474 AbstractCegarLoop]: Abstraction has 338 states and 392 transitions. [2024-09-12 20:09:34,984 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 20:09:34,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 392 transitions. [2024-09-12 20:09:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 20:09:34,985 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:34,985 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:09:34,997 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 20:09:35,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 20:09:35,186 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_27_to_35_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:09:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 261630309, now seen corresponding path program 1 times [2024-09-12 20:09:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543788297] [2024-09-12 20:09:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:09:35,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500060225] [2024-09-12 20:09:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:35,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:35,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:09:35,210 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 20:09:35,212 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 20:09:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:35,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 20:09:35,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:09:35,321 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 20:09:35,394 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 20:09:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:09:35,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 20:09:45,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:09:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543788297] [2024-09-12 20:09:45,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:09:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500060225] [2024-09-12 20:09:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500060225] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 20:09:45,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 20:09:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-09-12 20:09:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602393163] [2024-09-12 20:09:45,868 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 20:09:45,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 20:09:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:09:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 20:09:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=424, Unknown=2, NotChecked=0, Total=506 [2024-09-12 20:09:45,869 INFO L87 Difference]: Start difference. First operand 338 states and 392 transitions. Second operand has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:09:47,015 INFO L93 Difference]: Finished difference Result 390 states and 398 transitions. [2024-09-12 20:09:47,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 20:09:47,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 78 [2024-09-12 20:09:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:09:47,020 INFO L225 Difference]: With dead ends: 390 [2024-09-12 20:09:47,020 INFO L226 Difference]: Without dead ends: 389 [2024-09-12 20:09:47,020 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=168, Invalid=700, Unknown=2, NotChecked=0, Total=870 [2024-09-12 20:09:47,020 INFO L434 NwaCegarLoop]: 159 mSDtfsCounter, 285 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 20:09:47,020 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1536 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 20:09:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-09-12 20:09:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 338. [2024-09-12 20:09:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 240 states have (on average 1.5083333333333333) internal successors, (362), 316 states have internal predecessors, (362), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-12 20:09:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 391 transitions. [2024-09-12 20:09:47,102 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 391 transitions. Word has length 78 [2024-09-12 20:09:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:09:47,103 INFO L474 AbstractCegarLoop]: Abstraction has 338 states and 391 transitions. [2024-09-12 20:09:47,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:09:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 391 transitions. [2024-09-12 20:09:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 20:09:47,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:09:47,104 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:09:47,117 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 20:09:47,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 20:09:47,305 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_27_to_35_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 82 more)] === [2024-09-12 20:09:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:09:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash -479394852, now seen corresponding path program 1 times [2024-09-12 20:09:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:09:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967463156] [2024-09-12 20:09:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:09:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:09:47,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686390175] [2024-09-12 20:09:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:09:47,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:09:47,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:09:47,325 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 20:09:47,326 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 20:09:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:09:47,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 20:09:47,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:09:47,435 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 20:09:47,523 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 36 treesize of output 13 [2024-09-12 20:09:47,634 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 43 treesize of output 19 [2024-09-12 20:09:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:09:47,654 INFO L327 TraceCheckSpWp]: Computing backward predicates...