./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:18:33,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:18:33,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:18:33,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:18:33,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:18:33,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:18:33,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:18:33,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:18:33,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:18:33,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:18:33,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:18:33,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:18:33,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:18:33,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:18:33,681 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:18:33,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:18:33,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:18:33,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:18:33,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:18:33,682 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:18:33,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:18:33,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:18:33,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:18:33,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:18:33,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:18:33,688 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:18:33,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:18:33,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:18:33,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:18:33,689 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:18:33,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:18:33,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:18:33,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:18:33,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:18:33,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:33,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:18:33,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:18:33,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:18:33,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:18:33,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:18:33,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:18:33,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:18:33,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:18:33,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:18:33,695 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/ultimate-clean/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635e58724a56c62caeff3bee7749decbe4fed7f75c2f747c3a69f15f74dc7ff3 [2024-10-11 21:18:33,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:18:33,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:18:33,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:18:33,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:18:33,910 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:18:33,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2024-10-11 21:18:35,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:18:35,200 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:18:35,201 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps6.c [2024-10-11 21:18:35,206 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1abcef174/1960058225054cd582def83764337c1a/FLAGb3c80d7b3 [2024-10-11 21:18:35,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1abcef174/1960058225054cd582def83764337c1a [2024-10-11 21:18:35,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:18:35,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:18:35,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:35,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:18:35,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:18:35,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453aaf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35, skipping insertion in model container [2024-10-11 21:18:35,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:18:35,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:35,384 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:18:35,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:35,415 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:18:35,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35 WrapperNode [2024-10-11 21:18:35,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:35,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:35,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:18:35,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:18:35,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,452 INFO L138 Inliner]: procedures = 16, calls = 88, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2024-10-11 21:18:35,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:35,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:18:35,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:18:35,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:18:35,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,488 INFO L175 MemorySlicer]: Split 65 memory accesses to 6 slices as follows [2, 6, 4, 5, 3, 45]. 69 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 1, 2]. [2024-10-11 21:18:35,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:18:35,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:18:35,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:18:35,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:18:35,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (1/1) ... [2024-10-11 21:18:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:35,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:18:35,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:18:35,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_33_0 [2024-10-11 21:18:35,578 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_33_0 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:18:35,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 21:18:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:18:35,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:18:35,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:18:35,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:18:35,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:18:35,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:18:35,672 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:18:35,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:18:37,140 INFO L? ?]: Removed 499 outVars from TransFormulas that were not future-live. [2024-10-11 21:18:37,140 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:18:37,169 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:18:37,169 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 21:18:37,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:37 BoogieIcfgContainer [2024-10-11 21:18:37,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:18:37,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:18:37,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:18:37,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:18:37,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:18:35" (1/3) ... [2024-10-11 21:18:37,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fd5aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:37, skipping insertion in model container [2024-10-11 21:18:37,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:35" (2/3) ... [2024-10-11 21:18:37,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fd5aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:37, skipping insertion in model container [2024-10-11 21:18:37,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:37" (3/3) ... [2024-10-11 21:18:37,177 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps6.c [2024-10-11 21:18:37,189 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:18:37,189 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2024-10-11 21:18:37,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:18:37,247 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14758047, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:18:37,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2024-10-11 21:18:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 114 states have (on average 1.9210526315789473) internal successors, (219), 217 states have internal predecessors, (219), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 21:18:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 21:18:37,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:37,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 21:18:37,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:37,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:37,258 INFO L85 PathProgramCache]: Analyzing trace with hash 271485480, now seen corresponding path program 1 times [2024-10-11 21:18:37,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:37,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021844009] [2024-10-11 21:18:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:37,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021844009] [2024-10-11 21:18:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021844009] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:37,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806155160] [2024-10-11 21:18:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:37,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:37,670 INFO L87 Difference]: Start difference. First operand has 224 states, 114 states have (on average 1.9210526315789473) internal successors, (219), 217 states have internal predecessors, (219), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:38,411 INFO L93 Difference]: Finished difference Result 624 states and 656 transitions. [2024-10-11 21:18:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 21:18:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:38,422 INFO L225 Difference]: With dead ends: 624 [2024-10-11 21:18:38,424 INFO L226 Difference]: Without dead ends: 399 [2024-10-11 21:18:38,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:38,434 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 322 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:38,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 847 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 21:18:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-10-11 21:18:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 270. [2024-10-11 21:18:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.83125) internal successors, (293), 262 states have internal predecessors, (293), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 304 transitions. [2024-10-11 21:18:38,494 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 304 transitions. Word has length 5 [2024-10-11 21:18:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:38,495 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 304 transitions. [2024-10-11 21:18:38,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 304 transitions. [2024-10-11 21:18:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 21:18:38,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:38,496 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:38,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:18:38,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_25_to_33_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:38,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1129138676, now seen corresponding path program 1 times [2024-10-11 21:18:38,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:38,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430601000] [2024-10-11 21:18:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:38,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430601000] [2024-10-11 21:18:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430601000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581771644] [2024-10-11 21:18:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:38,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:38,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:38,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:38,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:38,685 INFO L87 Difference]: Start difference. First operand 270 states and 304 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:39,299 INFO L93 Difference]: Finished difference Result 399 states and 404 transitions. [2024-10-11 21:18:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:39,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-11 21:18:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:39,301 INFO L225 Difference]: With dead ends: 399 [2024-10-11 21:18:39,301 INFO L226 Difference]: Without dead ends: 389 [2024-10-11 21:18:39,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:39,303 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 268 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:39,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 830 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:18:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-10-11 21:18:39,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 270. [2024-10-11 21:18:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.76875) internal successors, (283), 262 states have internal predecessors, (283), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 294 transitions. [2024-10-11 21:18:39,320 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 294 transitions. Word has length 17 [2024-10-11 21:18:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:39,320 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 294 transitions. [2024-10-11 21:18:39,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 294 transitions. [2024-10-11 21:18:39,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 21:18:39,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:39,321 INFO L215 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] [2024-10-11 21:18:39,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:18:39,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_25_to_33_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:39,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash -863056098, now seen corresponding path program 1 times [2024-10-11 21:18:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:39,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268459837] [2024-10-11 21:18:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277513035] [2024-10-11 21:18:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:39,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:39,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:18:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:39,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 21:18:39,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:39,473 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 [2024-10-11 21:18:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:39,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:39,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:39,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268459837] [2024-10-11 21:18:39,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277513035] [2024-10-11 21:18:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277513035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779153995] [2024-10-11 21:18:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:39,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:39,640 INFO L87 Difference]: Start difference. First operand 270 states and 294 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:40,146 INFO L93 Difference]: Finished difference Result 389 states and 394 transitions. [2024-10-11 21:18:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 21:18:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:40,148 INFO L225 Difference]: With dead ends: 389 [2024-10-11 21:18:40,148 INFO L226 Difference]: Without dead ends: 387 [2024-10-11 21:18:40,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:40,150 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 281 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:40,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 863 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-10-11 21:18:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 270. [2024-10-11 21:18:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.75625) internal successors, (281), 262 states have internal predecessors, (281), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 292 transitions. [2024-10-11 21:18:40,166 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 292 transitions. Word has length 27 [2024-10-11 21:18:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:40,166 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 292 transitions. [2024-10-11 21:18:40,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 292 transitions. [2024-10-11 21:18:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 21:18:40,167 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:40,167 INFO L215 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] [2024-10-11 21:18:40,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:40,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:40,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_25_to_33_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:40,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash -468219456, now seen corresponding path program 1 times [2024-10-11 21:18:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:40,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089460499] [2024-10-11 21:18:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:40,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089460499] [2024-10-11 21:18:40,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089460499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:40,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:40,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896848963] [2024-10-11 21:18:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:40,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:40,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:40,472 INFO L87 Difference]: Start difference. First operand 270 states and 292 transitions. Second operand has 6 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:40,946 INFO L93 Difference]: Finished difference Result 387 states and 392 transitions. [2024-10-11 21:18:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-11 21:18:40,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:40,948 INFO L225 Difference]: With dead ends: 387 [2024-10-11 21:18:40,948 INFO L226 Difference]: Without dead ends: 379 [2024-10-11 21:18:40,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:40,949 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 216 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:40,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 841 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-11 21:18:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 270. [2024-10-11 21:18:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.70625) internal successors, (273), 262 states have internal predecessors, (273), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 284 transitions. [2024-10-11 21:18:40,955 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 284 transitions. Word has length 29 [2024-10-11 21:18:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:40,955 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 284 transitions. [2024-10-11 21:18:40,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 284 transitions. [2024-10-11 21:18:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:18:40,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:40,956 INFO L215 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] [2024-10-11 21:18:40,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 21:18:40,957 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_25_to_33_0Err32ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:40,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -991873976, now seen corresponding path program 1 times [2024-10-11 21:18:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285670313] [2024-10-11 21:18:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034598958] [2024-10-11 21:18:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:40,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:40,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:18:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:41,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 21:18:41,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:41,063 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 [2024-10-11 21:18:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:41,229 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:41,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285670313] [2024-10-11 21:18:41,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:41,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034598958] [2024-10-11 21:18:41,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034598958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:41,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:41,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:41,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572130328] [2024-10-11 21:18:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:41,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:41,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:41,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:41,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:41,231 INFO L87 Difference]: Start difference. First operand 270 states and 284 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:41,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:41,738 INFO L93 Difference]: Finished difference Result 379 states and 384 transitions. [2024-10-11 21:18:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:41,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-11 21:18:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:41,740 INFO L225 Difference]: With dead ends: 379 [2024-10-11 21:18:41,740 INFO L226 Difference]: Without dead ends: 377 [2024-10-11 21:18:41,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:41,741 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 198 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:41,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1011 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:18:41,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-11 21:18:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 270. [2024-10-11 21:18:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.69375) internal successors, (271), 262 states have internal predecessors, (271), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 282 transitions. [2024-10-11 21:18:41,747 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 282 transitions. Word has length 37 [2024-10-11 21:18:41,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:41,747 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 282 transitions. [2024-10-11 21:18:41,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 282 transitions. [2024-10-11 21:18:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 21:18:41,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:41,748 INFO L215 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] [2024-10-11 21:18:41,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:41,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:41,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_25_to_33_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:41,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 291852010, now seen corresponding path program 1 times [2024-10-11 21:18:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775801113] [2024-10-11 21:18:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:41,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641433582] [2024-10-11 21:18:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:41,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:41,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:41,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:41,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:18:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 21:18:42,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:42,059 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 [2024-10-11 21:18:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:42,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:42,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:42,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775801113] [2024-10-11 21:18:42,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641433582] [2024-10-11 21:18:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641433582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:42,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191008295] [2024-10-11 21:18:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:42,120 INFO L87 Difference]: Start difference. First operand 270 states and 282 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:42,333 INFO L93 Difference]: Finished difference Result 377 states and 382 transitions. [2024-10-11 21:18:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:42,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-11 21:18:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:42,335 INFO L225 Difference]: With dead ends: 377 [2024-10-11 21:18:42,335 INFO L226 Difference]: Without dead ends: 375 [2024-10-11 21:18:42,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:42,336 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 186 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:42,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 865 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-10-11 21:18:42,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 270. [2024-10-11 21:18:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.68125) internal successors, (269), 262 states have internal predecessors, (269), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 280 transitions. [2024-10-11 21:18:42,344 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 280 transitions. Word has length 39 [2024-10-11 21:18:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:42,344 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 280 transitions. [2024-10-11 21:18:42,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 280 transitions. [2024-10-11 21:18:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 21:18:42,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:42,346 INFO L215 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] [2024-10-11 21:18:42,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 21:18:42,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:42,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_25_to_33_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:42,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1296910732, now seen corresponding path program 1 times [2024-10-11 21:18:42,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:42,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385187327] [2024-10-11 21:18:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:42,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107255007] [2024-10-11 21:18:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:42,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:42,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:42,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:18:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:18:42,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:42,650 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 [2024-10-11 21:18:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:43,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385187327] [2024-10-11 21:18:43,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:43,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107255007] [2024-10-11 21:18:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107255007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:43,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920535534] [2024-10-11 21:18:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:43,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:43,348 INFO L87 Difference]: Start difference. First operand 270 states and 280 transitions. Second operand has 8 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:45,326 INFO L93 Difference]: Finished difference Result 375 states and 380 transitions. [2024-10-11 21:18:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-10-11 21:18:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:45,327 INFO L225 Difference]: With dead ends: 375 [2024-10-11 21:18:45,327 INFO L226 Difference]: Without dead ends: 374 [2024-10-11 21:18:45,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:45,328 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 193 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:45,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 838 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-11 21:18:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-10-11 21:18:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 270. [2024-10-11 21:18:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.675) internal successors, (268), 262 states have internal predecessors, (268), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 279 transitions. [2024-10-11 21:18:45,334 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 279 transitions. Word has length 41 [2024-10-11 21:18:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:45,334 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 279 transitions. [2024-10-11 21:18:45,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 279 transitions. [2024-10-11 21:18:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-11 21:18:45,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:45,335 INFO L215 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] [2024-10-11 21:18:45,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:18:45,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 21:18:45,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_25_to_33_0Err37ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:45,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1549527137, now seen corresponding path program 1 times [2024-10-11 21:18:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710364475] [2024-10-11 21:18:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:45,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65656781] [2024-10-11 21:18:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:45,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:45,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:45,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:45,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:18:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:45,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:18:45,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:45,646 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 [2024-10-11 21:18:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:46,228 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710364475] [2024-10-11 21:18:46,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65656781] [2024-10-11 21:18:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65656781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:46,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:46,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265450287] [2024-10-11 21:18:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:46,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:46,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:46,230 INFO L87 Difference]: Start difference. First operand 270 states and 279 transitions. Second operand has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:48,317 INFO L93 Difference]: Finished difference Result 374 states and 379 transitions. [2024-10-11 21:18:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-10-11 21:18:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:48,319 INFO L225 Difference]: With dead ends: 374 [2024-10-11 21:18:48,319 INFO L226 Difference]: Without dead ends: 373 [2024-10-11 21:18:48,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:48,319 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 191 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:48,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 948 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-11 21:18:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-10-11 21:18:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 270. [2024-10-11 21:18:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.66875) internal successors, (267), 262 states have internal predecessors, (267), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 278 transitions. [2024-10-11 21:18:48,325 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 278 transitions. Word has length 42 [2024-10-11 21:18:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:48,325 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 278 transitions. [2024-10-11 21:18:48,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 278 transitions. [2024-10-11 21:18:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:18:48,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:48,326 INFO L215 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] [2024-10-11 21:18:48,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:18:48,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:48,527 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_25_to_33_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:48,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash 790701102, now seen corresponding path program 1 times [2024-10-11 21:18:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363713253] [2024-10-11 21:18:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:48,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363713253] [2024-10-11 21:18:48,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363713253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528885115] [2024-10-11 21:18:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:48,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:48,666 INFO L87 Difference]: Start difference. First operand 270 states and 278 transitions. Second operand has 6 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:48,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:48,766 INFO L93 Difference]: Finished difference Result 379 states and 383 transitions. [2024-10-11 21:18:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:48,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-11 21:18:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:48,768 INFO L225 Difference]: With dead ends: 379 [2024-10-11 21:18:48,768 INFO L226 Difference]: Without dead ends: 377 [2024-10-11 21:18:48,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:48,770 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 195 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:48,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1051 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-10-11 21:18:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 270. [2024-10-11 21:18:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.65625) internal successors, (265), 262 states have internal predecessors, (265), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 276 transitions. [2024-10-11 21:18:48,777 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 276 transitions. Word has length 43 [2024-10-11 21:18:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:48,777 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 276 transitions. [2024-10-11 21:18:48,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 276 transitions. [2024-10-11 21:18:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 21:18:48,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:48,778 INFO L215 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] [2024-10-11 21:18:48,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 21:18:48,779 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_25_to_33_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:48,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:48,779 INFO L85 PathProgramCache]: Analyzing trace with hash -345448752, now seen corresponding path program 1 times [2024-10-11 21:18:48,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202300340] [2024-10-11 21:18:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:49,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:49,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202300340] [2024-10-11 21:18:49,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202300340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:49,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:49,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:49,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245178747] [2024-10-11 21:18:49,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:49,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:49,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:49,035 INFO L87 Difference]: Start difference. First operand 270 states and 276 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:50,527 INFO L93 Difference]: Finished difference Result 377 states and 381 transitions. [2024-10-11 21:18:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-11 21:18:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:50,529 INFO L225 Difference]: With dead ends: 377 [2024-10-11 21:18:50,529 INFO L226 Difference]: Without dead ends: 376 [2024-10-11 21:18:50,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:50,530 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 191 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:50,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1110 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 21:18:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-11 21:18:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 270. [2024-10-11 21:18:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.65) internal successors, (264), 262 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 275 transitions. [2024-10-11 21:18:50,535 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 275 transitions. Word has length 45 [2024-10-11 21:18:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:50,535 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 275 transitions. [2024-10-11 21:18:50,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 275 transitions. [2024-10-11 21:18:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 21:18:50,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:50,536 INFO L215 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] [2024-10-11 21:18:50,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 21:18:50,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_25_to_33_0Err41ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:50,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2118976603, now seen corresponding path program 1 times [2024-10-11 21:18:50,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486163441] [2024-10-11 21:18:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:50,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486163441] [2024-10-11 21:18:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486163441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:50,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190817340] [2024-10-11 21:18:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:50,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:50,703 INFO L87 Difference]: Start difference. First operand 270 states and 275 transitions. Second operand has 6 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:51,797 INFO L93 Difference]: Finished difference Result 376 states and 380 transitions. [2024-10-11 21:18:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-11 21:18:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:51,798 INFO L225 Difference]: With dead ends: 376 [2024-10-11 21:18:51,798 INFO L226 Difference]: Without dead ends: 375 [2024-10-11 21:18:51,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:51,799 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 188 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:51,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 979 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 21:18:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-10-11 21:18:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 270. [2024-10-11 21:18:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.64375) internal successors, (263), 262 states have internal predecessors, (263), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions. [2024-10-11 21:18:51,804 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 46 [2024-10-11 21:18:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:51,804 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 274 transitions. [2024-10-11 21:18:51,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 274 transitions. [2024-10-11 21:18:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 21:18:51,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:51,805 INFO L215 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] [2024-10-11 21:18:51,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 21:18:51,805 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_25_to_33_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:51,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash -357394878, now seen corresponding path program 1 times [2024-10-11 21:18:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397712575] [2024-10-11 21:18:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:51,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:18:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397712575] [2024-10-11 21:18:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397712575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164518735] [2024-10-11 21:18:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:51,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:51,995 INFO L87 Difference]: Start difference. First operand 270 states and 274 transitions. Second operand has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:52,101 INFO L93 Difference]: Finished difference Result 369 states and 373 transitions. [2024-10-11 21:18:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-10-11 21:18:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:52,102 INFO L225 Difference]: With dead ends: 369 [2024-10-11 21:18:52,102 INFO L226 Difference]: Without dead ends: 368 [2024-10-11 21:18:52,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:52,103 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 149 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:52,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1271 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-11 21:18:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 271. [2024-10-11 21:18:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.639751552795031) internal successors, (264), 263 states have internal predecessors, (264), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 275 transitions. [2024-10-11 21:18:52,110 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 275 transitions. Word has length 54 [2024-10-11 21:18:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:52,110 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 275 transitions. [2024-10-11 21:18:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 275 transitions. [2024-10-11 21:18:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:18:52,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:52,111 INFO L215 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] [2024-10-11 21:18:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 21:18:52,111 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_25_to_33_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:52,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1805660797, now seen corresponding path program 1 times [2024-10-11 21:18:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057705680] [2024-10-11 21:18:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:18:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057705680] [2024-10-11 21:18:52,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057705680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:52,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198539174] [2024-10-11 21:18:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:52,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:52,327 INFO L87 Difference]: Start difference. First operand 271 states and 275 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:52,441 INFO L93 Difference]: Finished difference Result 271 states and 275 transitions. [2024-10-11 21:18:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:52,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-10-11 21:18:52,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:52,443 INFO L225 Difference]: With dead ends: 271 [2024-10-11 21:18:52,443 INFO L226 Difference]: Without dead ends: 270 [2024-10-11 21:18:52,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:52,444 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 275 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:52,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 941 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-11 21:18:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2024-10-11 21:18:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 161 states have (on average 1.6335403726708075) internal successors, (263), 262 states have internal predecessors, (263), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 274 transitions. [2024-10-11 21:18:52,451 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 274 transitions. Word has length 55 [2024-10-11 21:18:52,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:52,451 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 274 transitions. [2024-10-11 21:18:52,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,451 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 274 transitions. [2024-10-11 21:18:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 21:18:52,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:52,453 INFO L215 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] [2024-10-11 21:18:52,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 21:18:52,454 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_25_to_33_0Err44ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:52,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:52,454 INFO L85 PathProgramCache]: Analyzing trace with hash 140909988, now seen corresponding path program 1 times [2024-10-11 21:18:52,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:52,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891278513] [2024-10-11 21:18:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:18:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891278513] [2024-10-11 21:18:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891278513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395034489] [2024-10-11 21:18:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:52,594 INFO L87 Difference]: Start difference. First operand 270 states and 274 transitions. Second operand has 6 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:52,764 INFO L93 Difference]: Finished difference Result 366 states and 371 transitions. [2024-10-11 21:18:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:52,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-10-11 21:18:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:52,765 INFO L225 Difference]: With dead ends: 366 [2024-10-11 21:18:52,765 INFO L226 Difference]: Without dead ends: 364 [2024-10-11 21:18:52,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:52,766 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 145 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:52,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 888 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-10-11 21:18:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 273. [2024-10-11 21:18:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 164 states have (on average 1.6219512195121952) internal successors, (266), 265 states have internal predecessors, (266), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 21:18:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 277 transitions. [2024-10-11 21:18:52,771 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 277 transitions. Word has length 56 [2024-10-11 21:18:52,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:52,772 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 277 transitions. [2024-10-11 21:18:52,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 277 transitions. [2024-10-11 21:18:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 21:18:52,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:52,772 INFO L215 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] [2024-10-11 21:18:52,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 21:18:52,773 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:52,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 73388598, now seen corresponding path program 1 times [2024-10-11 21:18:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584532110] [2024-10-11 21:18:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-11 21:18:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584532110] [2024-10-11 21:18:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584532110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:52,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772694266] [2024-10-11 21:18:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:52,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:52,915 INFO L87 Difference]: Start difference. First operand 273 states and 277 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:18:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:53,518 INFO L93 Difference]: Finished difference Result 366 states and 371 transitions. [2024-10-11 21:18:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2024-10-11 21:18:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:53,520 INFO L225 Difference]: With dead ends: 366 [2024-10-11 21:18:53,520 INFO L226 Difference]: Without dead ends: 354 [2024-10-11 21:18:53,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:53,520 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 240 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:53,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 623 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:18:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-10-11 21:18:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 288. [2024-10-11 21:18:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 178 states have (on average 1.5730337078651686) internal successors, (280), 278 states have internal predecessors, (280), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 21:18:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 292 transitions. [2024-10-11 21:18:53,526 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 292 transitions. Word has length 57 [2024-10-11 21:18:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:53,527 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 292 transitions. [2024-10-11 21:18:53,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:18:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 292 transitions. [2024-10-11 21:18:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 21:18:53,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:53,527 INFO L215 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] [2024-10-11 21:18:53,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 21:18:53,527 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_25_to_33_0Err46ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:53,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2024450810, now seen corresponding path program 1 times [2024-10-11 21:18:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:53,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278303951] [2024-10-11 21:18:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:53,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863456601] [2024-10-11 21:18:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:53,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:53,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:53,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:18:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:53,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:18:53,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:53,643 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 [2024-10-11 21:18:53,771 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 [2024-10-11 21:18:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:53,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278303951] [2024-10-11 21:18:53,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863456601] [2024-10-11 21:18:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863456601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939367113] [2024-10-11 21:18:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:53,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:53,783 INFO L87 Difference]: Start difference. First operand 288 states and 292 transitions. Second operand has 8 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:54,215 INFO L93 Difference]: Finished difference Result 356 states and 362 transitions. [2024-10-11 21:18:54,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:18:54,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2024-10-11 21:18:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:54,217 INFO L225 Difference]: With dead ends: 356 [2024-10-11 21:18:54,217 INFO L226 Difference]: Without dead ends: 354 [2024-10-11 21:18:54,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:18:54,217 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 365 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:54,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 699 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:18:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-10-11 21:18:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 286. [2024-10-11 21:18:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 276 states have internal predecessors, (278), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 21:18:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 290 transitions. [2024-10-11 21:18:54,224 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 290 transitions. Word has length 58 [2024-10-11 21:18:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:54,225 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 290 transitions. [2024-10-11 21:18:54,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 290 transitions. [2024-10-11 21:18:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 21:18:54,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:54,225 INFO L215 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] [2024-10-11 21:18:54,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:18:54,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 21:18:54,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_25_to_33_0Err47ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:54,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1666534465, now seen corresponding path program 1 times [2024-10-11 21:18:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:54,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610923809] [2024-10-11 21:18:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484853691] [2024-10-11 21:18:54,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:54,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:54,447 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:54,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 21:18:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:54,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 21:18:54,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:54,563 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 [2024-10-11 21:18:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:54,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:54,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610923809] [2024-10-11 21:18:54,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484853691] [2024-10-11 21:18:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484853691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:54,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802032302] [2024-10-11 21:18:54,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:54,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:54,670 INFO L87 Difference]: Start difference. First operand 286 states and 290 transitions. Second operand has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:55,018 INFO L93 Difference]: Finished difference Result 371 states and 382 transitions. [2024-10-11 21:18:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:55,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-10-11 21:18:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:55,020 INFO L225 Difference]: With dead ends: 371 [2024-10-11 21:18:55,020 INFO L226 Difference]: Without dead ends: 370 [2024-10-11 21:18:55,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:55,020 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 222 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:55,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 685 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-10-11 21:18:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 323. [2024-10-11 21:18:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 213 states have (on average 1.6103286384976525) internal successors, (343), 312 states have internal predecessors, (343), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 357 transitions. [2024-10-11 21:18:55,027 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 357 transitions. Word has length 59 [2024-10-11 21:18:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:55,028 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 357 transitions. [2024-10-11 21:18:55,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 357 transitions. [2024-10-11 21:18:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 21:18:55,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:55,028 INFO L215 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] [2024-10-11 21:18:55,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:55,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:55,233 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_25_to_33_0Err48ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash 122961000, now seen corresponding path program 1 times [2024-10-11 21:18:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252687928] [2024-10-11 21:18:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:55,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085791092] [2024-10-11 21:18:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:55,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:55,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:55,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 21:18:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:55,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 21:18:55,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:55,347 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 [2024-10-11 21:18:55,442 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 25 treesize of output 13 [2024-10-11 21:18:55,460 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 [2024-10-11 21:18:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:55,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252687928] [2024-10-11 21:18:55,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085791092] [2024-10-11 21:18:55,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085791092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:55,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:55,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:18:55,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888241052] [2024-10-11 21:18:55,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:55,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:18:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:18:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:18:55,479 INFO L87 Difference]: Start difference. First operand 323 states and 357 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:55,747 INFO L93 Difference]: Finished difference Result 360 states and 365 transitions. [2024-10-11 21:18:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:18:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2024-10-11 21:18:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:55,749 INFO L225 Difference]: With dead ends: 360 [2024-10-11 21:18:55,749 INFO L226 Difference]: Without dead ends: 359 [2024-10-11 21:18:55,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:18:55,749 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 446 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:55,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 774 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-10-11 21:18:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 322. [2024-10-11 21:18:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 213 states have (on average 1.6056338028169015) internal successors, (342), 311 states have internal predecessors, (342), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 356 transitions. [2024-10-11 21:18:55,756 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 356 transitions. Word has length 60 [2024-10-11 21:18:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:55,757 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 356 transitions. [2024-10-11 21:18:55,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 356 transitions. [2024-10-11 21:18:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 21:18:55,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:55,757 INFO L215 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] [2024-10-11 21:18:55,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 21:18:55,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 21:18:55,958 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_25_to_33_0Err49ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:55,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash -483176157, now seen corresponding path program 1 times [2024-10-11 21:18:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:55,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529818904] [2024-10-11 21:18:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:55,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789784169] [2024-10-11 21:18:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:55,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:55,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:55,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:18:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:56,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 21:18:56,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:56,081 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 [2024-10-11 21:18:56,205 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 [2024-10-11 21:18:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:56,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:56,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529818904] [2024-10-11 21:18:56,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789784169] [2024-10-11 21:18:56,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789784169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:56,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:56,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:18:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034236502] [2024-10-11 21:18:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:56,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:18:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:18:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:18:56,236 INFO L87 Difference]: Start difference. First operand 322 states and 356 transitions. Second operand has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:56,508 INFO L93 Difference]: Finished difference Result 370 states and 379 transitions. [2024-10-11 21:18:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 21:18:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2024-10-11 21:18:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:56,509 INFO L225 Difference]: With dead ends: 370 [2024-10-11 21:18:56,509 INFO L226 Difference]: Without dead ends: 369 [2024-10-11 21:18:56,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:56,510 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 226 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:56,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 936 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-10-11 21:18:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 324. [2024-10-11 21:18:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 215 states have (on average 1.6) internal successors, (344), 313 states have internal predecessors, (344), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2024-10-11 21:18:56,517 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 61 [2024-10-11 21:18:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:56,517 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2024-10-11 21:18:56,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2024-10-11 21:18:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 21:18:56,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:56,518 INFO L215 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] [2024-10-11 21:18:56,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 21:18:56,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:56,718 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_25_to_33_0Err50ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:56,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2093558838, now seen corresponding path program 1 times [2024-10-11 21:18:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5298755] [2024-10-11 21:18:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:56,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360524703] [2024-10-11 21:18:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:56,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:56,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:56,743 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:56,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:18:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:56,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 21:18:56,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:56,837 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 [2024-10-11 21:18:56,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-11 21:18:56,979 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 [2024-10-11 21:18:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:56,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:56,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:56,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5298755] [2024-10-11 21:18:56,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:56,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360524703] [2024-10-11 21:18:56,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360524703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:56,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:56,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 21:18:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235373291] [2024-10-11 21:18:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:56,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 21:18:56,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 21:18:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:56,995 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:57,377 INFO L93 Difference]: Finished difference Result 361 states and 366 transitions. [2024-10-11 21:18:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 21:18:57,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-10-11 21:18:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:57,379 INFO L225 Difference]: With dead ends: 361 [2024-10-11 21:18:57,379 INFO L226 Difference]: Without dead ends: 360 [2024-10-11 21:18:57,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:18:57,380 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 360 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:57,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 852 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-11 21:18:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 323. [2024-10-11 21:18:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 215 states have (on average 1.5953488372093023) internal successors, (343), 312 states have internal predecessors, (343), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 357 transitions. [2024-10-11 21:18:57,389 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 357 transitions. Word has length 62 [2024-10-11 21:18:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:57,390 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 357 transitions. [2024-10-11 21:18:57,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 357 transitions. [2024-10-11 21:18:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 21:18:57,390 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:57,390 INFO L215 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] [2024-10-11 21:18:57,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:57,591 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_25_to_33_0Err51ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -475814395, now seen corresponding path program 1 times [2024-10-11 21:18:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:57,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414095476] [2024-10-11 21:18:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:57,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:57,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272974894] [2024-10-11 21:18:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:57,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:57,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:18:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:57,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 21:18:57,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:57,718 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 [2024-10-11 21:18:57,815 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 [2024-10-11 21:18:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:57,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:57,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:57,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414095476] [2024-10-11 21:18:57,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:57,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272974894] [2024-10-11 21:18:57,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272974894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:57,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:57,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 21:18:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783256129] [2024-10-11 21:18:57,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:57,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 21:18:57,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 21:18:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:57,869 INFO L87 Difference]: Start difference. First operand 323 states and 357 transitions. Second operand has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:58,214 INFO L93 Difference]: Finished difference Result 369 states and 376 transitions. [2024-10-11 21:18:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:18:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-10-11 21:18:58,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:58,217 INFO L225 Difference]: With dead ends: 369 [2024-10-11 21:18:58,217 INFO L226 Difference]: Without dead ends: 368 [2024-10-11 21:18:58,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:18:58,218 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 228 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:58,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 940 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-11 21:18:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 325. [2024-10-11 21:18:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 217 states have (on average 1.5898617511520738) internal successors, (345), 314 states have internal predecessors, (345), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 359 transitions. [2024-10-11 21:18:58,225 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 359 transitions. Word has length 63 [2024-10-11 21:18:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 359 transitions. [2024-10-11 21:18:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:58,225 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 359 transitions. [2024-10-11 21:18:58,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 21:18:58,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:58,226 INFO L215 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] [2024-10-11 21:18:58,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 21:18:58,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 21:18:58,427 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_25_to_33_0Err52ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:58,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1865344212, now seen corresponding path program 1 times [2024-10-11 21:18:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008006302] [2024-10-11 21:18:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045539243] [2024-10-11 21:18:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:58,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:58,444 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:58,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:18:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:58,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 21:18:58,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:58,542 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 [2024-10-11 21:18:58,628 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 25 treesize of output 13 [2024-10-11 21:18:58,694 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 [2024-10-11 21:18:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:58,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:58,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008006302] [2024-10-11 21:18:58,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045539243] [2024-10-11 21:18:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045539243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:58,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:58,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 21:18:58,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126134903] [2024-10-11 21:18:58,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:58,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:18:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:58,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:18:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:18:58,712 INFO L87 Difference]: Start difference. First operand 325 states and 359 transitions. Second operand has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:58,957 INFO L93 Difference]: Finished difference Result 362 states and 367 transitions. [2024-10-11 21:18:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:18:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-10-11 21:18:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:58,960 INFO L225 Difference]: With dead ends: 362 [2024-10-11 21:18:58,960 INFO L226 Difference]: Without dead ends: 361 [2024-10-11 21:18:58,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:18:58,961 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 360 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:58,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 774 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-10-11 21:18:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 324. [2024-10-11 21:18:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 217 states have (on average 1.5852534562211982) internal successors, (344), 313 states have internal predecessors, (344), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 358 transitions. [2024-10-11 21:18:58,985 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 358 transitions. Word has length 64 [2024-10-11 21:18:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:58,986 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 358 transitions. [2024-10-11 21:18:58,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 358 transitions. [2024-10-11 21:18:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 21:18:58,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:58,987 INFO L215 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] [2024-10-11 21:18:59,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:59,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:59,191 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_25_to_33_0Err53ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:18:59,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1991095577, now seen corresponding path program 1 times [2024-10-11 21:18:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:59,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78190515] [2024-10-11 21:18:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:59,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398228354] [2024-10-11 21:18:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:59,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:59,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:18:59,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:18:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:59,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 21:18:59,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:59,309 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 [2024-10-11 21:18:59,403 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 [2024-10-11 21:18:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:59,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78190515] [2024-10-11 21:18:59,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398228354] [2024-10-11 21:18:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398228354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:59,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 21:18:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460594537] [2024-10-11 21:18:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:59,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:18:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:18:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 21:18:59,489 INFO L87 Difference]: Start difference. First operand 324 states and 358 transitions. Second operand has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:59,927 INFO L93 Difference]: Finished difference Result 368 states and 373 transitions. [2024-10-11 21:18:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 21:18:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2024-10-11 21:18:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:59,929 INFO L225 Difference]: With dead ends: 368 [2024-10-11 21:18:59,929 INFO L226 Difference]: Without dead ends: 367 [2024-10-11 21:18:59,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-11 21:18:59,930 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 146 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:59,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1126 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:18:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-10-11 21:18:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 326. [2024-10-11 21:18:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 219 states have (on average 1.5799086757990868) internal successors, (346), 315 states have internal predecessors, (346), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:18:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 360 transitions. [2024-10-11 21:18:59,938 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 360 transitions. Word has length 65 [2024-10-11 21:18:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:59,938 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 360 transitions. [2024-10-11 21:18:59,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 360 transitions. [2024-10-11 21:18:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 21:18:59,939 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:59,939 INFO L215 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] [2024-10-11 21:18:59,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 21:19:00,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:00,144 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_25_to_33_0Err54ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:00,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1594420594, now seen corresponding path program 1 times [2024-10-11 21:19:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947740481] [2024-10-11 21:19:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:00,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:19:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947740481] [2024-10-11 21:19:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947740481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:00,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988203077] [2024-10-11 21:19:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:00,311 INFO L87 Difference]: Start difference. First operand 326 states and 360 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:00,894 INFO L93 Difference]: Finished difference Result 356 states and 364 transitions. [2024-10-11 21:19:00,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:00,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2024-10-11 21:19:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:00,896 INFO L225 Difference]: With dead ends: 356 [2024-10-11 21:19:00,896 INFO L226 Difference]: Without dead ends: 355 [2024-10-11 21:19:00,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:19:00,896 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 134 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:00,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1072 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-10-11 21:19:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 327. [2024-10-11 21:19:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 220 states have (on average 1.5772727272727274) internal successors, (347), 316 states have internal predecessors, (347), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:19:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 361 transitions. [2024-10-11 21:19:00,905 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 361 transitions. Word has length 66 [2024-10-11 21:19:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:00,905 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 361 transitions. [2024-10-11 21:19:00,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 361 transitions. [2024-10-11 21:19:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-11 21:19:00,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:00,906 INFO L215 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] [2024-10-11 21:19:00,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 21:19:00,906 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_25_to_33_0Err55ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:00,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2112569289, now seen corresponding path program 1 times [2024-10-11 21:19:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792741817] [2024-10-11 21:19:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:01,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:19:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792741817] [2024-10-11 21:19:01,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792741817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:01,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:01,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:01,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879945798] [2024-10-11 21:19:01,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:01,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:01,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:01,055 INFO L87 Difference]: Start difference. First operand 327 states and 361 transitions. Second operand has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:01,450 INFO L93 Difference]: Finished difference Result 355 states and 363 transitions. [2024-10-11 21:19:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2024-10-11 21:19:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:01,451 INFO L225 Difference]: With dead ends: 355 [2024-10-11 21:19:01,452 INFO L226 Difference]: Without dead ends: 354 [2024-10-11 21:19:01,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:01,452 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 129 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:01,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1025 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-10-11 21:19:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 328. [2024-10-11 21:19:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 317 states have internal predecessors, (348), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:19:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 362 transitions. [2024-10-11 21:19:01,468 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 362 transitions. Word has length 67 [2024-10-11 21:19:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:01,469 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 362 transitions. [2024-10-11 21:19:01,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 362 transitions. [2024-10-11 21:19:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 21:19:01,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:01,469 INFO L215 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] [2024-10-11 21:19:01,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 21:19:01,470 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:01,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 847334658, now seen corresponding path program 1 times [2024-10-11 21:19:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:01,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125612986] [2024-10-11 21:19:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:01,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:01,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-11 21:19:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125612986] [2024-10-11 21:19:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125612986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:01,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:19:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47078730] [2024-10-11 21:19:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:01,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:19:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:19:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:19:01,576 INFO L87 Difference]: Start difference. First operand 328 states and 362 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:02,098 INFO L93 Difference]: Finished difference Result 363 states and 367 transitions. [2024-10-11 21:19:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:19:02,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2024-10-11 21:19:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:02,099 INFO L225 Difference]: With dead ends: 363 [2024-10-11 21:19:02,099 INFO L226 Difference]: Without dead ends: 353 [2024-10-11 21:19:02,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:02,100 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 195 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:02,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 597 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-10-11 21:19:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 328. [2024-10-11 21:19:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 221 states have (on average 1.5294117647058822) internal successors, (338), 317 states have internal predecessors, (338), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:19:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 352 transitions. [2024-10-11 21:19:02,105 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 352 transitions. Word has length 69 [2024-10-11 21:19:02,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:02,106 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 352 transitions. [2024-10-11 21:19:02,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:02,106 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 352 transitions. [2024-10-11 21:19:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 21:19:02,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:02,106 INFO L215 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] [2024-10-11 21:19:02,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 21:19:02,107 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:02,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash 331459094, now seen corresponding path program 1 times [2024-10-11 21:19:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675959379] [2024-10-11 21:19:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:02,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:19:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675959379] [2024-10-11 21:19:02,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675959379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876748671] [2024-10-11 21:19:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:02,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:02,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:19:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:02,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 21:19:02,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:02,537 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 [2024-10-11 21:19:02,566 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 [2024-10-11 21:19:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:02,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:19:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876748671] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:02,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-10-11 21:19:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765211283] [2024-10-11 21:19:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:02,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:19:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:19:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:19:02,594 INFO L87 Difference]: Start difference. First operand 328 states and 352 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:06,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:10,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:19:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:10,969 INFO L93 Difference]: Finished difference Result 331 states and 359 transitions. [2024-10-11 21:19:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 21:19:10,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2024-10-11 21:19:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:10,971 INFO L225 Difference]: With dead ends: 331 [2024-10-11 21:19:10,971 INFO L226 Difference]: Without dead ends: 329 [2024-10-11 21:19:10,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:19:10,972 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 426 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:10,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 663 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 542 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2024-10-11 21:19:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-11 21:19:10,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2024-10-11 21:19:10,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 221 states have (on average 1.5203619909502262) internal successors, (336), 315 states have internal predecessors, (336), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:19:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 350 transitions. [2024-10-11 21:19:10,980 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 350 transitions. Word has length 71 [2024-10-11 21:19:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:10,980 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 350 transitions. [2024-10-11 21:19:10,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:10,980 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 350 transitions. [2024-10-11 21:19:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 21:19:10,981 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:10,981 INFO L215 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] [2024-10-11 21:19:10,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:19:11,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 21:19:11,186 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:11,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:11,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1685297359, now seen corresponding path program 1 times [2024-10-11 21:19:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:11,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728357402] [2024-10-11 21:19:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:11,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:11,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-11 21:19:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:11,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:11,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728357402] [2024-10-11 21:19:11,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728357402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:11,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957012453] [2024-10-11 21:19:11,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:11,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:11,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:11,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:11,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:19:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:11,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 21:19:11,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:11,620 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 [2024-10-11 21:19:11,650 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 [2024-10-11 21:19:11,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:11,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957012453] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:11,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:11,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-10-11 21:19:11,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257034185] [2024-10-11 21:19:11,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:11,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:19:11,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:11,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:19:11,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:19:11,798 INFO L87 Difference]: Start difference. First operand 326 states and 350 transitions. Second operand has 21 states, 19 states have (on average 10.473684210526315) internal successors, (199), 17 states have internal predecessors, (199), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 21:19:13,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:13,223 INFO L93 Difference]: Finished difference Result 354 states and 362 transitions. [2024-10-11 21:19:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:19:13,224 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 10.473684210526315) internal successors, (199), 17 states have internal predecessors, (199), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 72 [2024-10-11 21:19:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:13,225 INFO L225 Difference]: With dead ends: 354 [2024-10-11 21:19:13,225 INFO L226 Difference]: Without dead ends: 353 [2024-10-11 21:19:13,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:19:13,225 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 897 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:13,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1604 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 21:19:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-10-11 21:19:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 325. [2024-10-11 21:19:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 221 states have (on average 1.5158371040723981) internal successors, (335), 314 states have internal predecessors, (335), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-11 21:19:13,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 349 transitions. [2024-10-11 21:19:13,234 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 349 transitions. Word has length 72 [2024-10-11 21:19:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:13,234 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 349 transitions. [2024-10-11 21:19:13,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 10.473684210526315) internal successors, (199), 17 states have internal predecessors, (199), 7 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 21:19:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 349 transitions. [2024-10-11 21:19:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 21:19:13,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:13,234 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:13,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 21:19:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 21:19:13,435 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_25_to_33_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:13,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash 704610616, now seen corresponding path program 1 times [2024-10-11 21:19:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535243234] [2024-10-11 21:19:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401986571] [2024-10-11 21:19:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:13,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:13,455 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:13,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 21:19:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:13,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-11 21:19:13,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:13,561 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 [2024-10-11 21:19:13,642 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 [2024-10-11 21:19:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:13,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535243234] [2024-10-11 21:19:18,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401986571] [2024-10-11 21:19:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401986571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:18,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:18,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-11 21:19:18,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437530215] [2024-10-11 21:19:18,923 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:18,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:19:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:19:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2024-10-11 21:19:18,924 INFO L87 Difference]: Start difference. First operand 325 states and 349 transitions. Second operand has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:19,732 INFO L93 Difference]: Finished difference Result 451 states and 457 transitions. [2024-10-11 21:19:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:19:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2024-10-11 21:19:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:19,733 INFO L225 Difference]: With dead ends: 451 [2024-10-11 21:19:19,733 INFO L226 Difference]: Without dead ends: 450 [2024-10-11 21:19:19,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=99, Invalid=361, Unknown=2, NotChecked=0, Total=462 [2024-10-11 21:19:19,734 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 366 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:19,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1374 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 21:19:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-10-11 21:19:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 377. [2024-10-11 21:19:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 269 states have (on average 1.5724907063197027) internal successors, (423), 363 states have internal predecessors, (423), 8 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-11 21:19:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 443 transitions. [2024-10-11 21:19:19,742 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 443 transitions. Word has length 73 [2024-10-11 21:19:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:19,743 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 443 transitions. [2024-10-11 21:19:19,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 443 transitions. [2024-10-11 21:19:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 21:19:19,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:19,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:19,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 21:19:19,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 21:19:19,944 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_25_to_33_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:19,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 368092657, now seen corresponding path program 1 times [2024-10-11 21:19:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208024624] [2024-10-11 21:19:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334436703] [2024-10-11 21:19:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:19,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:19,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:19,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:19,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 21:19:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:20,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 21:19:20,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:20,072 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 [2024-10-11 21:19:20,160 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 [2024-10-11 21:19:20,207 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 [2024-10-11 21:19:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:20,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208024624] [2024-10-11 21:19:20,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334436703] [2024-10-11 21:19:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334436703] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:20,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-11 21:19:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551405575] [2024-10-11 21:19:20,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:20,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 21:19:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 21:19:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:19:20,616 INFO L87 Difference]: Start difference. First operand 377 states and 443 transitions. Second operand has 17 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:22,399 INFO L93 Difference]: Finished difference Result 404 states and 451 transitions. [2024-10-11 21:19:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:19:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2024-10-11 21:19:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:22,400 INFO L225 Difference]: With dead ends: 404 [2024-10-11 21:19:22,400 INFO L226 Difference]: Without dead ends: 403 [2024-10-11 21:19:22,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:19:22,401 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 640 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:22,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1614 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-11 21:19:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-10-11 21:19:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 378. [2024-10-11 21:19:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 270 states have (on average 1.5629629629629629) internal successors, (422), 363 states have internal predecessors, (422), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-11 21:19:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 444 transitions. [2024-10-11 21:19:22,409 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 444 transitions. Word has length 74 [2024-10-11 21:19:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:22,409 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 444 transitions. [2024-10-11 21:19:22,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 444 transitions. [2024-10-11 21:19:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 21:19:22,410 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:22,410 INFO L215 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] [2024-10-11 21:19:22,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:22,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:22,610 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_25_to_33_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:22,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:22,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1474029478, now seen corresponding path program 1 times [2024-10-11 21:19:22,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:22,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140467189] [2024-10-11 21:19:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:22,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489799372] [2024-10-11 21:19:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:22,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:22,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:22,631 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:22,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 21:19:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:22,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-11 21:19:22,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:22,743 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 [2024-10-11 21:19:22,820 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 [2024-10-11 21:19:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:22,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:23,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140467189] [2024-10-11 21:19:23,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489799372] [2024-10-11 21:19:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489799372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:23,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:23,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-10-11 21:19:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907626919] [2024-10-11 21:19:23,646 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:23,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 21:19:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 21:19:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:19:23,647 INFO L87 Difference]: Start difference. First operand 378 states and 444 transitions. Second operand has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:24,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:24,424 INFO L93 Difference]: Finished difference Result 450 states and 457 transitions. [2024-10-11 21:19:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 21:19:24,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-10-11 21:19:24,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:24,426 INFO L225 Difference]: With dead ends: 450 [2024-10-11 21:19:24,426 INFO L226 Difference]: Without dead ends: 449 [2024-10-11 21:19:24,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-10-11 21:19:24,426 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 426 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:24,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1462 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 21:19:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-10-11 21:19:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 378. [2024-10-11 21:19:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 270 states have (on average 1.5592592592592593) internal successors, (421), 363 states have internal predecessors, (421), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-11 21:19:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 443 transitions. [2024-10-11 21:19:24,437 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 443 transitions. Word has length 75 [2024-10-11 21:19:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:24,437 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 443 transitions. [2024-10-11 21:19:24,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.1) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 443 transitions. [2024-10-11 21:19:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 21:19:24,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:24,438 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:24,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 21:19:24,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-11 21:19:24,643 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_25_to_33_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:24,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1549726483, now seen corresponding path program 1 times [2024-10-11 21:19:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881748718] [2024-10-11 21:19:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112453725] [2024-10-11 21:19:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:24,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:24,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:24,669 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:24,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 21:19:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:24,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 21:19:24,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:24,778 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 [2024-10-11 21:19:24,855 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 [2024-10-11 21:19:24,909 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 [2024-10-11 21:19:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:24,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881748718] [2024-10-11 21:19:37,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112453725] [2024-10-11 21:19:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112453725] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:37,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2024-10-11 21:19:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598252474] [2024-10-11 21:19:37,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:37,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 21:19:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 21:19:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=306, Unknown=3, NotChecked=0, Total=380 [2024-10-11 21:19:37,836 INFO L87 Difference]: Start difference. First operand 378 states and 443 transitions. Second operand has 20 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:41,757 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2024-10-11 21:19:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 21:19:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2024-10-11 21:19:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:41,758 INFO L225 Difference]: With dead ends: 403 [2024-10-11 21:19:41,758 INFO L226 Difference]: Without dead ends: 402 [2024-10-11 21:19:41,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=224, Invalid=703, Unknown=3, NotChecked=0, Total=930 [2024-10-11 21:19:41,759 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 799 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:41,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1551 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-11 21:19:41,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-10-11 21:19:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 377. [2024-10-11 21:19:41,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 270 states have (on average 1.5518518518518518) internal successors, (419), 362 states have internal predecessors, (419), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-11 21:19:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 441 transitions. [2024-10-11 21:19:41,767 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 441 transitions. Word has length 76 [2024-10-11 21:19:41,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:41,768 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 441 transitions. [2024-10-11 21:19:41,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 441 transitions. [2024-10-11 21:19:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 21:19:41,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:41,768 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:41,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-11 21:19:41,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:41,969 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_25_to_33_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:41,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash 796880764, now seen corresponding path program 1 times [2024-10-11 21:19:41,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:41,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913772400] [2024-10-11 21:19:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487755650] [2024-10-11 21:19:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:41,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:41,995 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:41,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 21:19:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 21:19:42,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:42,124 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 [2024-10-11 21:19:42,207 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 [2024-10-11 21:19:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:42,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913772400] [2024-10-11 21:19:43,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487755650] [2024-10-11 21:19:43,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487755650] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:43,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:43,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-11 21:19:43,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145690250] [2024-10-11 21:19:43,912 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:43,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 21:19:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 21:19:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:19:43,913 INFO L87 Difference]: Start difference. First operand 377 states and 441 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:44,522 INFO L93 Difference]: Finished difference Result 447 states and 454 transitions. [2024-10-11 21:19:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:19:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2024-10-11 21:19:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:44,524 INFO L225 Difference]: With dead ends: 447 [2024-10-11 21:19:44,524 INFO L226 Difference]: Without dead ends: 446 [2024-10-11 21:19:44,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:19:44,524 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 536 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:44,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1271 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-11 21:19:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 377. [2024-10-11 21:19:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 270 states have (on average 1.548148148148148) internal successors, (418), 362 states have internal predecessors, (418), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2024-10-11 21:19:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 440 transitions. [2024-10-11 21:19:44,532 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 440 transitions. Word has length 77 [2024-10-11 21:19:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:44,532 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 440 transitions. [2024-10-11 21:19:44,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 10 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 440 transitions. [2024-10-11 21:19:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 21:19:44,533 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:44,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:44,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:44,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,733 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_25_to_33_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_25_to_33_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_25_to_33_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2024-10-11 21:19:44,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1066500043, now seen corresponding path program 1 times [2024-10-11 21:19:44,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:44,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690938275] [2024-10-11 21:19:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750127694] [2024-10-11 21:19:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:44,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:44,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:44,760 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:19:44,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 21:19:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:44,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 21:19:44,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:44,872 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 [2024-10-11 21:19:44,948 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 [2024-10-11 21:19:45,036 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 [2024-10-11 21:19:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:45,059 INFO L311 TraceCheckSpWp]: Computing backward predicates...