./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ --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 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:34:34,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:34:34,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 21:34:34,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:34:34,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:34:34,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:34:34,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:34:34,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:34:34,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:34:34,612 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:34:34,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:34:34,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:34:34,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:34:34,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:34:34,616 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:34:34,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:34:34,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:34:34,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:34:34,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:34:34,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:34:34,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:34:34,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:34:34,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:34:34,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:34:34,620 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:34:34,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:34:34,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:34:34,621 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:34:34,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:34:34,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:34:34,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:34:34,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:34:34,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:34:34,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:34:34,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:34:34,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:34:34,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:34:34,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:34:34,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:34:34,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:34:34,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:34:34,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:34:34,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:34:34,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:34:34,628 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 [2023-11-23 21:34:34,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:34:34,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:34:34,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:34:34,975 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:34:34,975 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:34:34,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2023-11-23 21:34:38,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:34:38,311 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:34:38,312 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2023-11-23 21:34:38,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/data/654541886/1df8517e3da84cabb67fc34d201000cc/FLAG99acde5a1 [2023-11-23 21:34:38,337 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/data/654541886/1df8517e3da84cabb67fc34d201000cc [2023-11-23 21:34:38,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:34:38,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:34:38,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:34:38,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:34:38,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:34:38,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1951c5d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38, skipping insertion in model container [2023-11-23 21:34:38,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:34:38,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:34:38,604 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:34:38,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:34:38,679 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:34:38,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38 WrapperNode [2023-11-23 21:34:38,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:34:38,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:34:38,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:34:38,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:34:38,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,733 INFO L138 Inliner]: procedures = 14, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-23 21:34:38,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:34:38,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:34:38,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:34:38,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:34:38,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,749 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,764 INFO L189 HeapSplitter]: Split 20 memory accesses to 4 slices as follows [2, 6, 6, 6] [2023-11-23 21:34:38,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:34:38,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:34:38,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:34:38,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:34:38,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (1/1) ... [2023-11-23 21:34:38,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:34:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:38,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:34:38,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:34:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:34:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:34:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:34:38,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:34:38,855 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_23_0 [2023-11-23 21:34:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_23_0 [2023-11-23 21:34:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_22_to_23_0 [2023-11-23 21:34:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_22_to_23_0 [2023-11-23 21:34:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:34:38,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:34:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:34:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:34:38,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:34:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:34:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_22_0 [2023-11-23 21:34:38,857 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_22_0 [2023-11-23 21:34:38,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:34:38,949 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:34:38,952 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:34:39,173 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:34:39,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:34:39,226 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:34:39,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:34:39 BoogieIcfgContainer [2023-11-23 21:34:39,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:34:39,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:34:39,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:34:39,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:34:39,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:34:38" (1/3) ... [2023-11-23 21:34:39,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de62bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:34:39, skipping insertion in model container [2023-11-23 21:34:39,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:34:38" (2/3) ... [2023-11-23 21:34:39,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de62bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:34:39, skipping insertion in model container [2023-11-23 21:34:39,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:34:39" (3/3) ... [2023-11-23 21:34:39,242 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_3.c [2023-11-23 21:34:39,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:34:39,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:34:39,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:34:39,316 INFO L357 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, mHoare=true, 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;@229ed88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:34:39,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-23 21:34:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.5) internal successors, (36), 33 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:34:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:34:39,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:39,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:39,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:39,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1687961075, now seen corresponding path program 1 times [2023-11-23 21:34:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:39,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907504723] [2023-11-23 21:34:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:39,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907504723] [2023-11-23 21:34:39,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907504723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:39,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:39,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332715248] [2023-11-23 21:34:39,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:39,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:39,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:39,989 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.5) internal successors, (36), 33 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:40,156 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-11-23 21:34:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:34:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:40,171 INFO L225 Difference]: With dead ends: 56 [2023-11-23 21:34:40,171 INFO L226 Difference]: Without dead ends: 43 [2023-11-23 21:34:40,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:34:40,196 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:40,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-23 21:34:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2023-11-23 21:34:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 21:34:40,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-11-23 21:34:40,252 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 11 [2023-11-23 21:34:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:40,252 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-11-23 21:34:40,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-11-23 21:34:40,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:34:40,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:40,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:40,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:34:40,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:40,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1680998632, now seen corresponding path program 1 times [2023-11-23 21:34:40,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035735832] [2023-11-23 21:34:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:40,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:40,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035735832] [2023-11-23 21:34:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035735832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:40,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:34:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006980685] [2023-11-23 21:34:40,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:40,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:34:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:34:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:34:40,548 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-23 21:34:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:40,805 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-11-23 21:34:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:34:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 11 [2023-11-23 21:34:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:40,810 INFO L225 Difference]: With dead ends: 49 [2023-11-23 21:34:40,811 INFO L226 Difference]: Without dead ends: 47 [2023-11-23 21:34:40,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:34:40,819 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:40,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 91 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-23 21:34:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-11-23 21:34:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-23 21:34:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-11-23 21:34:40,847 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 11 [2023-11-23 21:34:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:40,848 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-11-23 21:34:40,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-23 21:34:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-11-23 21:34:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:34:40,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:40,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:40,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:34:40,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:40,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -564507169, now seen corresponding path program 1 times [2023-11-23 21:34:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906235900] [2023-11-23 21:34:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:41,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 21:34:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:41,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906235900] [2023-11-23 21:34:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906235900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:34:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736020525] [2023-11-23 21:34:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:41,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:41,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:34:41,145 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:34:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:41,286 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2023-11-23 21:34:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 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 14 [2023-11-23 21:34:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:41,290 INFO L225 Difference]: With dead ends: 87 [2023-11-23 21:34:41,291 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:34:41,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:34:41,301 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:41,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 93 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:34:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-11-23 21:34:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 33 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:34:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-23 21:34:41,319 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 14 [2023-11-23 21:34:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-23 21:34:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:34:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 21:34:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:34:41,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:41,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:41,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:34:41,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:41,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 789392049, now seen corresponding path program 1 times [2023-11-23 21:34:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:41,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447286832] [2023-11-23 21:34:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447286832] [2023-11-23 21:34:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447286832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936191564] [2023-11-23 21:34:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:41,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:41,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:41,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:34:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:41,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 21:34:41,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:41,875 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 [2023-11-23 21:34:41,938 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 23 treesize of output 3 [2023-11-23 21:34:41,953 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 [2023-11-23 21:34:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:41,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936191564] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:34:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 17 [2023-11-23 21:34:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051951014] [2023-11-23 21:34:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:34:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:34:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:34:42,117 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:42,344 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2023-11-23 21:34:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:34:42,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-23 21:34:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:42,348 INFO L225 Difference]: With dead ends: 46 [2023-11-23 21:34:42,348 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:34:42,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:34:42,351 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:42,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 142 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:42,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:34:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2023-11-23 21:34:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:34:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2023-11-23 21:34:42,373 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 16 [2023-11-23 21:34:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2023-11-23 21:34:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2023-11-23 21:34:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:34:42,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:42,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:42,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:34:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:42,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:42,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1298650220, now seen corresponding path program 1 times [2023-11-23 21:34:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:42,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103533560] [2023-11-23 21:34:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:34:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103533560] [2023-11-23 21:34:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103533560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:42,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:42,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:34:42,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098788664] [2023-11-23 21:34:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:42,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:34:42,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:42,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:34:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:34:42,665 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:42,685 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-11-23 21:34:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:34:42,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-23 21:34:42,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:42,687 INFO L225 Difference]: With dead ends: 42 [2023-11-23 21:34:42,687 INFO L226 Difference]: Without dead ends: 41 [2023-11-23 21:34:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:34:42,688 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:42,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:34:42,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-23 21:34:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2023-11-23 21:34:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:34:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2023-11-23 21:34:42,696 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 17 [2023-11-23 21:34:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:42,697 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2023-11-23 21:34:42,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2023-11-23 21:34:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:34:42,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:42,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:34:42,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:42,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1900896519, now seen corresponding path program 1 times [2023-11-23 21:34:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545402736] [2023-11-23 21:34:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 21:34:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:43,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:34:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:43,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545402736] [2023-11-23 21:34:43,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545402736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:43,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005778225] [2023-11-23 21:34:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:43,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:43,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:43,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:43,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:34:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:43,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 21:34:43,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:43,337 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 [2023-11-23 21:34:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:34:43,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005778225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:34:44,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:34:44,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2023-11-23 21:34:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583212690] [2023-11-23 21:34:44,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 21:34:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 21:34:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:34:44,102 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:34:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:44,505 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2023-11-23 21:34:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:34:44,505 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2023-11-23 21:34:44,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:44,508 INFO L225 Difference]: With dead ends: 88 [2023-11-23 21:34:44,508 INFO L226 Difference]: Without dead ends: 54 [2023-11-23 21:34:44,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:34:44,511 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:44,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 217 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:34:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-23 21:34:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2023-11-23 21:34:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-23 21:34:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-23 21:34:44,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 21 [2023-11-23 21:34:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:44,531 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-23 21:34:44,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:34:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 21:34:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:34:44,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:44,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:44,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:44,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:44,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:44,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash -26304215, now seen corresponding path program 1 times [2023-11-23 21:34:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:44,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501061907] [2023-11-23 21:34:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:44,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:34:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:34:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501061907] [2023-11-23 21:34:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501061907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293255361] [2023-11-23 21:34:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:44,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:44,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:34:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:45,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 21:34:45,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:45,037 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 [2023-11-23 21:34:45,089 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 [2023-11-23 21:34:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:34:45,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:34:45,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293255361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:45,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:34:45,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 10 [2023-11-23 21:34:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606549610] [2023-11-23 21:34:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:34:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:34:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:34:45,142 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:34:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:45,224 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2023-11-23 21:34:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:45,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-23 21:34:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:45,226 INFO L225 Difference]: With dead ends: 83 [2023-11-23 21:34:45,226 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:34:45,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:34:45,231 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:45,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 92 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:34:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-23 21:34:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:34:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-11-23 21:34:45,247 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 22 [2023-11-23 21:34:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-11-23 21:34:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:34:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-11-23 21:34:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:34:45,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:45,252 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:45,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 21:34:45,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:45,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:45,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1794443403, now seen corresponding path program 2 times [2023-11-23 21:34:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705973190] [2023-11-23 21:34:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:45,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:45,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 21:34:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:34:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705973190] [2023-11-23 21:34:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705973190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284829206] [2023-11-23 21:34:46,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:34:46,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:46,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:46,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:34:46,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:34:46,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:34:46,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 21:34:46,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:46,895 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 [2023-11-23 21:34:47,020 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 [2023-11-23 21:34:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:34:47,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:34:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284829206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:34:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 20 [2023-11-23 21:34:47,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227447279] [2023-11-23 21:34:47,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:47,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:34:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:47,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:34:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:34:47,042 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:34:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:47,173 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2023-11-23 21:34:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:34:47,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2023-11-23 21:34:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:47,175 INFO L225 Difference]: With dead ends: 58 [2023-11-23 21:34:47,175 INFO L226 Difference]: Without dead ends: 57 [2023-11-23 21:34:47,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:34:47,177 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:47,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-23 21:34:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2023-11-23 21:34:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:34:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-23 21:34:47,194 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 35 [2023-11-23 21:34:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:47,196 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-23 21:34:47,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:34:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-23 21:34:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:34:47,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:47,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:47,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:47,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:47,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash 206829407, now seen corresponding path program 1 times [2023-11-23 21:34:47,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253924462] [2023-11-23 21:34:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:47,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 21:34:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:34:48,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:48,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253924462] [2023-11-23 21:34:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253924462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471539739] [2023-11-23 21:34:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:48,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:48,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:34:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:48,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:34:48,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:48,815 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 [2023-11-23 21:34:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 21:34:48,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:34:48,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471539739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:48,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:34:48,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-11-23 21:34:48,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510849870] [2023-11-23 21:34:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:48,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:48,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:34:48,837 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:34:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:48,924 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-23 21:34:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:48,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-11-23 21:34:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:48,926 INFO L225 Difference]: With dead ends: 44 [2023-11-23 21:34:48,926 INFO L226 Difference]: Without dead ends: 43 [2023-11-23 21:34:48,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:34:48,928 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:48,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:34:48,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-23 21:34:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-23 21:34:48,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:34:48,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2023-11-23 21:34:48,935 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 36 [2023-11-23 21:34:48,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:48,935 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2023-11-23 21:34:48,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:34:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 21:34:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 21:34:48,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:48,938 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:48,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:49,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -209581975, now seen corresponding path program 1 times [2023-11-23 21:34:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22216593] [2023-11-23 21:34:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 21:34:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 21:34:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 21:34:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 21:34:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22216593] [2023-11-23 21:34:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22216593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207231068] [2023-11-23 21:34:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:50,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:50,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:50,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:34:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:50,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 21:34:50,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:50,893 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 [2023-11-23 21:34:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 21:34:51,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207231068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:51,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:34:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-11-23 21:34:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49463118] [2023-11-23 21:34:51,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:34:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:34:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 21:34:51,923 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 24 states, 18 states have (on average 3.5) internal successors, (63), 23 states have internal predecessors, (63), 10 states have call successors, (20), 4 states have call predecessors, (20), 9 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-23 21:34:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:52,580 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2023-11-23 21:34:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 21:34:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.5) internal successors, (63), 23 states have internal predecessors, (63), 10 states have call successors, (20), 4 states have call predecessors, (20), 9 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) Word has length 90 [2023-11-23 21:34:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:52,582 INFO L225 Difference]: With dead ends: 85 [2023-11-23 21:34:52,582 INFO L226 Difference]: Without dead ends: 47 [2023-11-23 21:34:52,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=254, Invalid=1638, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 21:34:52,584 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:52,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 159 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:34:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-23 21:34:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-23 21:34:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 21:34:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2023-11-23 21:34:52,591 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 90 [2023-11-23 21:34:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:52,592 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2023-11-23 21:34:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.5) internal successors, (63), 23 states have internal predecessors, (63), 10 states have call successors, (20), 4 states have call predecessors, (20), 9 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-23 21:34:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2023-11-23 21:34:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-23 21:34:52,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:52,595 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:52,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:52,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:52,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:52,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1245795159, now seen corresponding path program 2 times [2023-11-23 21:34:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:52,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499092885] [2023-11-23 21:34:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 21:34:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-11-23 21:34:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:55,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499092885] [2023-11-23 21:34:55,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499092885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:55,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806893107] [2023-11-23 21:34:55,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:34:55,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:55,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:55,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:34:55,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:34:55,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:34:55,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 21:34:55,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:55,972 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 [2023-11-23 21:34:56,162 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 [2023-11-23 21:34:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2023-11-23 21:34:56,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:34:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806893107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:56,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:34:56,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-11-23 21:34:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538780222] [2023-11-23 21:34:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:34:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:34:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:34:56,185 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:34:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:56,337 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-23 21:34:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:34:56,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 186 [2023-11-23 21:34:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:56,344 INFO L225 Difference]: With dead ends: 48 [2023-11-23 21:34:56,345 INFO L226 Difference]: Without dead ends: 47 [2023-11-23 21:34:56,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:34:56,346 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:56,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 99 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:34:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-23 21:34:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-23 21:34:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 8 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 21:34:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2023-11-23 21:34:56,356 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 186 [2023-11-23 21:34:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:56,357 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2023-11-23 21:34:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:34:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2023-11-23 21:34:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 21:34:56,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:56,363 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:34:56,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:56,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:34:56,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_21_to_22_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-11-23 21:34:56,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 35055832, now seen corresponding path program 1 times [2023-11-23 21:34:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:56,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365026261] [2023-11-23 21:34:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:56,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 21:34:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 21:34:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:34:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 21:34:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-11-23 21:34:59,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:59,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365026261] [2023-11-23 21:34:59,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365026261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:34:59,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927707367] [2023-11-23 21:34:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:59,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:34:59,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:34:59,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:34:59,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:34:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:59,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:34:59,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:59,770 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 [2023-11-23 21:34:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2023-11-23 21:34:59,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:34:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927707367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:34:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-23 21:34:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390016407] [2023-11-23 21:34:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:59,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:34:59,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:34:59,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:34:59,789 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:34:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:59,879 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2023-11-23 21:34:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:34:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 187 [2023-11-23 21:34:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:59,880 INFO L225 Difference]: With dead ends: 46 [2023-11-23 21:34:59,881 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:34:59,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:34:59,882 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:59,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:34:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:34:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:34:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:34:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:34:59,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2023-11-23 21:34:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:59,884 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:34:59,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:34:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:34:59,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:34:59,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-23 21:34:59,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-23 21:34:59,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-23 21:34:59,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-23 21:34:59,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-23 21:34:59,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_22_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-23 21:34:59,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:35:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:35:00,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:35:00,411 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (or (let ((.cse1 (select (select |#memory_int#1| func_to_recursive_line_23_to_23_0_~c.base) func_to_recursive_line_23_to_23_0_~c.offset)) (.cse0 (select |old(#memory_int#1)| func_to_recursive_line_23_to_23_0_~c.base))) (and (= (store |old(#memory_int#1)| func_to_recursive_line_23_to_23_0_~c.base (store .cse0 func_to_recursive_line_23_to_23_0_~c.offset .cse1)) |#memory_int#1|) (= |func_to_recursive_line_23_to_23_0_#in~c.offset| func_to_recursive_line_23_to_23_0_~c.offset) (= |#memory_int#2| |old(#memory_int#2)|) (<= 0 (+ 2147483649 .cse1)) (= func_to_recursive_line_23_to_23_0_~c.base |func_to_recursive_line_23_to_23_0_#in~c.base|) (= |#memory_int#3| |old(#memory_int#3)|) (<= .cse1 (+ (select .cse0 func_to_recursive_line_23_to_23_0_~c.offset) 1)))) (<= (+ (select (select |old(#memory_int#1)| |func_to_recursive_line_23_to_23_0_#in~c.base|) |func_to_recursive_line_23_to_23_0_#in~c.offset|) 2147483650) 0)) [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point L30-1(line 30) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_23_to_23_0EXIT(lines 23 37) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 36) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 23 37) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-23 21:35:00,412 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 37) the Hoare annotation is: (or (<= (+ (select (select |old(#memory_int#1)| |func_to_recursive_line_23_to_23_0_#in~c.base|) |func_to_recursive_line_23_to_23_0_#in~c.offset|) 2147483650) 0) (and (= |#memory_int#0| |old(#memory_int#0)|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#1| |old(#memory_int#1)|) (= |#memory_int#3| |old(#memory_int#3)|))) [2023-11-23 21:35:00,413 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2023-11-23 21:35:00,413 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2023-11-23 21:35:00,413 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (or (let ((.cse1 (select (select |#memory_int#2| func_to_recursive_line_22_to_23_0_~b.base) func_to_recursive_line_22_to_23_0_~b.offset)) (.cse0 (select |old(#memory_int#2)| func_to_recursive_line_22_to_23_0_~b.base))) (and (= |#memory_int#2| (store |old(#memory_int#2)| func_to_recursive_line_22_to_23_0_~b.base (store .cse0 func_to_recursive_line_22_to_23_0_~b.offset .cse1))) (= |func_to_recursive_line_22_to_23_0_#in~b.base| func_to_recursive_line_22_to_23_0_~b.base) (= func_to_recursive_line_22_to_23_0_~b.offset |func_to_recursive_line_22_to_23_0_#in~b.offset|) (= |#memory_int#3| |old(#memory_int#3)|) (<= 0 .cse1) (<= .cse1 (+ (select .cse0 func_to_recursive_line_22_to_23_0_~b.offset) 1)))) (< (select (select |old(#memory_int#2)| |func_to_recursive_line_22_to_23_0_#in~b.base|) |func_to_recursive_line_22_to_23_0_#in~b.offset|) 0)) [2023-11-23 21:35:00,413 INFO L899 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2023-11-23 21:35:00,413 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-11-23 21:35:00,413 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (or (let ((.cse0 (select (select |old(#memory_int#1)| |func_to_recursive_line_23_to_23_0_#in~c.base|) |func_to_recursive_line_23_to_23_0_#in~c.offset|)) (.cse1 (select (select |#memory_int#1| |func_to_recursive_line_23_to_23_0_#in~c.base|) |func_to_recursive_line_23_to_23_0_#in~c.offset|))) (and (= (select (select |#memory_int#1| func_to_recursive_line_22_to_23_0_~c.base) func_to_recursive_line_22_to_23_0_~c.offset) 0) (= |func_to_recursive_line_22_to_23_0_#in~b.base| func_to_recursive_line_22_to_23_0_~b.base) (or (< 4 .cse0) (< .cse1 5)) (= |#memory_int#2| |old(#memory_int#2)|) (<= (select (select |#memory_int#2| func_to_recursive_line_22_to_23_0_~b.base) func_to_recursive_line_22_to_23_0_~b.offset) 5) (= func_to_recursive_line_22_to_23_0_~b.offset |func_to_recursive_line_22_to_23_0_#in~b.offset|) (or (< 5 .cse0) (< .cse1 6)) (= |#memory_int#3| |old(#memory_int#3)|))) (< (select (select |old(#memory_int#2)| |func_to_recursive_line_22_to_23_0_#in~b.base|) |func_to_recursive_line_22_to_23_0_#in~b.offset|) 0)) [2023-11-23 21:35:00,413 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2023-11-23 21:35:00,413 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 39 57) the Hoare annotation is: (or (< (select (select |old(#memory_int#2)| |func_to_recursive_line_22_to_23_0_#in~b.base|) |func_to_recursive_line_22_to_23_0_#in~b.offset|) 0) (and (= |#memory_int#0| |old(#memory_int#0)|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#1| |old(#memory_int#1)|) (= |#memory_int#3| |old(#memory_int#3)|))) [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 56) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 39 57) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_22_to_23_0EXIT(lines 39 57) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L88(line 88) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (= (select (select |#memory_int#3| |ULTIMATE.start_main_~#a~0#1.base|) |ULTIMATE.start_main_~#a~0#1.offset|) 0) [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L88-2(line 88) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L86-1(line 86) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L88-3(line 88) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L88-5(lines 88 94) no Hoare annotation was computed. [2023-11-23 21:35:00,414 INFO L899 garLoopResultBuilder]: For program point L88-7(lines 88 94) no Hoare annotation was computed. [2023-11-23 21:35:00,415 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 76) no Hoare annotation was computed. [2023-11-23 21:35:00,416 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 59 77) no Hoare annotation was computed. [2023-11-23 21:35:00,416 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_21_to_22_0EXIT(lines 59 77) no Hoare annotation was computed. [2023-11-23 21:35:00,416 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 59 77) the Hoare annotation is: (or (< (+ (select (select |old(#memory_int#3)| |func_to_recursive_line_21_to_22_0_#in~a.base|) |func_to_recursive_line_21_to_22_0_#in~a.offset|) 2147483648) 0) (and (= |#memory_int#0| |old(#memory_int#0)|) (= |#memory_int#2| |old(#memory_int#2)|) (= |#memory_int#1| |old(#memory_int#1)|) (= |#memory_int#3| |old(#memory_int#3)|))) [2023-11-23 21:35:00,417 INFO L895 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: (or (< (+ (select (select |old(#memory_int#3)| |func_to_recursive_line_21_to_22_0_#in~a.base|) |func_to_recursive_line_21_to_22_0_#in~a.offset|) 2147483648) 0) (< 0 (+ 2147483649 (select (select |#memory_int#3| func_to_recursive_line_21_to_22_0_~a.base) func_to_recursive_line_21_to_22_0_~a.offset)))) [2023-11-23 21:35:00,417 INFO L899 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2023-11-23 21:35:00,417 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 70) no Hoare annotation was computed. [2023-11-23 21:35:00,417 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2023-11-23 21:35:00,417 INFO L895 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int#3)| |func_to_recursive_line_21_to_22_0_#in~a.base|) |func_to_recursive_line_21_to_22_0_#in~a.offset|)) (.cse0 (select (select |#memory_int#3| func_to_recursive_line_21_to_22_0_~a.base) func_to_recursive_line_21_to_22_0_~a.offset))) (and (or (= .cse0 0) (not (= .cse1 0))) (or (< (+ .cse1 2147483648) 0) (and (<= 0 (+ .cse0 2147483648)) (= (select (select |#memory_int#2| func_to_recursive_line_21_to_22_0_~b.base) func_to_recursive_line_21_to_22_0_~b.offset) 0) (= |#memory_int#1| |old(#memory_int#1)|) (= |#memory_int#3| |old(#memory_int#3)|) (<= .cse0 5))))) [2023-11-23 21:35:00,418 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_21_to_22_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 70) no Hoare annotation was computed. [2023-11-23 21:35:00,418 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2023-11-23 21:35:00,421 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:00,423 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:35:00,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:35:00 BoogieIcfgContainer [2023-11-23 21:35:00,429 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:35:00,430 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:35:00,430 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:35:00,431 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:35:00,431 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:34:39" (3/4) ... [2023-11-23 21:35:00,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:35:00,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_23_to_23_0 [2023-11-23 21:35:00,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_22_to_23_0 [2023-11-23 21:35:00,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_22_0 [2023-11-23 21:35:00,445 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-23 21:35:00,445 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 21:35:00,445 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:35:00,446 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:35:00,566 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:35:00,567 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:35:00,567 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:35:00,568 INFO L158 Benchmark]: Toolchain (without parser) took 22223.39ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 115.1MB in the beginning and 206.5MB in the end (delta: -91.4MB). Peak memory consumption was 136.8MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,568 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 91.1MB in the beginning and 91.0MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:00,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.88ms. Allocated memory is still 148.9MB. Free memory was 114.5MB in the beginning and 119.5MB in the end (delta: -5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.95ms. Allocated memory is still 148.9MB. Free memory was 119.5MB in the beginning and 117.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:35:00,569 INFO L158 Benchmark]: Boogie Preprocessor took 45.94ms. Allocated memory is still 148.9MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,570 INFO L158 Benchmark]: RCFGBuilder took 446.55ms. Allocated memory is still 148.9MB. Free memory was 115.7MB in the beginning and 100.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,570 INFO L158 Benchmark]: TraceAbstraction took 21199.03ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 99.7MB in the beginning and 211.8MB in the end (delta: -112.1MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,571 INFO L158 Benchmark]: Witness Printer took 136.79ms. Allocated memory is still 377.5MB. Free memory was 211.8MB in the beginning and 206.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:35:00,577 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory was 91.1MB in the beginning and 91.0MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.88ms. Allocated memory is still 148.9MB. Free memory was 114.5MB in the beginning and 119.5MB in the end (delta: -5.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.95ms. Allocated memory is still 148.9MB. Free memory was 119.5MB in the beginning and 117.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.94ms. Allocated memory is still 148.9MB. Free memory was 117.8MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.55ms. Allocated memory is still 148.9MB. Free memory was 115.7MB in the beginning and 100.4MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 21199.03ms. Allocated memory was 148.9MB in the beginning and 377.5MB in the end (delta: 228.6MB). Free memory was 99.7MB in the beginning and 211.8MB in the end (delta: -112.1MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. * Witness Printer took 136.79ms. Allocated memory is still 377.5MB. Free memory was 211.8MB in the beginning and 206.5MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 21.1s, OverallIterations: 12, TraceHistogramMax: 20, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212 mSDsluCounter, 1413 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1127 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1182 IncrementalHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 286 mSDtfsCounter, 1182 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 986 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=10, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 40 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 72 PreInvPairs, 77 NumberOfFragments, 328 HoareAnnotationTreeSize, 72 FomulaSimplifications, 109 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 293 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.3s InterpolantComputationTime, 1239 NumberOfCodeBlocks, 1239 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1254 ConstructedInterpolants, 0 QuantifiedInterpolants, 5394 SizeOfPredicates, 44 NumberOfNonLiveVariables, 3420 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 5257/5419 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:35:00,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c44e7e8-bbf7-4b07-b7bb-f7d253131649/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE