./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55885307ad7991ec619705bd65f9ccb0a7f28b4003909403684402b81add0d87 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:53,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:53,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:02:53,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:53,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:53,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:53,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:53,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:53,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:53,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:53,843 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:53,845 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:53,845 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:53,847 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:53,847 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:53,848 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:53,848 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:53,848 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:53,849 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:53,849 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:53,850 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:53,850 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:53,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:53,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:53,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:53,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:53,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:53,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:53,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:53,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:53,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:53,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:02:53,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:53,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:53,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:53,857 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:53,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:53,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:53,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:53,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:53,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:53,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:53,860 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:53,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:53,860 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:53,861 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:53,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:53,861 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55885307ad7991ec619705bd65f9ccb0a7f28b4003909403684402b81add0d87 [2023-11-19 05:02:54,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:54,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:54,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:54,220 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:54,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:54,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c [2023-11-19 05:02:57,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:57,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:57,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/sv-benchmarks/c/recursified_nla-digbench/recursified_hard.c [2023-11-19 05:02:57,763 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/data/914ae8062/b298f1d5aa32400ba2d99adae91dffbb/FLAG70bf79f8e [2023-11-19 05:02:57,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/data/914ae8062/b298f1d5aa32400ba2d99adae91dffbb [2023-11-19 05:02:57,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:57,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:57,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:57,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:57,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:57,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:57" (1/1) ... [2023-11-19 05:02:57,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51948930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:57, skipping insertion in model container [2023-11-19 05:02:57,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:57" (1/1) ... [2023-11-19 05:02:57,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:58,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:58,084 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:58,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:58,161 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:58,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58 WrapperNode [2023-11-19 05:02:58,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:58,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:58,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:58,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:58,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,206 INFO L138 Inliner]: procedures = 17, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-19 05:02:58,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:58,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:58,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:58,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:58,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:58,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:58,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:58,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:58,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (1/1) ... [2023-11-19 05:02:58,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:58,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:58,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_41_to_51_0 [2023-11-19 05:02:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_41_to_51_0 [2023-11-19 05:02:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_31_to_38_0 [2023-11-19 05:02:58,353 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_31_to_38_0 [2023-11-19 05:02:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:02:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:58,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:02:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:02:58,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:02:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:58,473 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:58,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:58,986 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:59,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:59,073 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:02:59,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:59 BoogieIcfgContainer [2023-11-19 05:02:59,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:59,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:59,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:59,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:59,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:57" (1/3) ... [2023-11-19 05:02:59,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b15f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:59, skipping insertion in model container [2023-11-19 05:02:59,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58" (2/3) ... [2023-11-19 05:02:59,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b15f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:59, skipping insertion in model container [2023-11-19 05:02:59,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:59" (3/3) ... [2023-11-19 05:02:59,097 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_hard.c [2023-11-19 05:02:59,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:59,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-19 05:02:59,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:59,191 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=FINITE_AUTOMATA, 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;@11fc2b4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:59,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-19 05:02:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 69 states have internal predecessors, (72), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:02:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:02:59,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:59,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:59,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_41_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:02:59,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash -676980882, now seen corresponding path program 1 times [2023-11-19 05:02:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018937231] [2023-11-19 05:02:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:59,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018937231] [2023-11-19 05:02:59,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 05:02:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450015534] [2023-11-19 05:02:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:59,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:02:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:59,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:02:59,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:02:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:59,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:02:59,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:59,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450015534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:59,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745287496] [2023-11-19 05:02:59,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:59,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:02:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:02:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:02:59,751 INFO L87 Difference]: Start difference. First operand has 82 states, 43 states have (on average 1.6744186046511629) internal successors, (72), 69 states have internal predecessors, (72), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 05:02:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:59,796 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2023-11-19 05:02:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:02:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2023-11-19 05:02:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:59,808 INFO L225 Difference]: With dead ends: 140 [2023-11-19 05:02:59,808 INFO L226 Difference]: Without dead ends: 77 [2023-11-19 05:02:59,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:02:59,816 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-19 05:02:59,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-19 05:02:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 66 states have internal predecessors, (67), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:02:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-19 05:02:59,866 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 10 [2023-11-19 05:02:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:59,866 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-19 05:02:59,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 05:02:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-19 05:02:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:02:59,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:59,868 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:59,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:03:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:00,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:03:00,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1972310320, now seen corresponding path program 1 times [2023-11-19 05:03:00,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:00,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024562843] [2023-11-19 05:03:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:00,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:03:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208738971] [2023-11-19 05:03:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:00,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:00,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:03:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:00,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-19 05:03:00,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:00,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,561 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,593 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,644 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,669 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,697 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,715 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,746 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,770 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,790 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,791 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,799 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,814 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,815 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:00,821 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 86 [2023-11-19 05:03:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:00,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2023-11-19 05:03:00,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:01,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,123 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,123 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,126 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,145 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 86 [2023-11-19 05:03:01,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2023-11-19 05:03:01,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:01,383 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,396 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,423 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 91 [2023-11-19 05:03:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 94 [2023-11-19 05:03:01,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 85 [2023-11-19 05:03:01,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,621 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 05:03:01,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-19 05:03:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 35 [2023-11-19 05:03:01,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 05:03:01,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 05:03:01,716 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,741 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,753 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 60 [2023-11-19 05:03:01,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:01,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,848 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,861 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,883 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-19 05:03:01,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 66 [2023-11-19 05:03:01,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2023-11-19 05:03:01,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 21 [2023-11-19 05:03:01,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:01,957 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 05:03:01,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-19 05:03:01,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 05:03:01,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 05:03:02,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 60 [2023-11-19 05:03:02,058 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:02,071 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,073 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,076 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:02,083 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:02,088 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:02,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-19 05:03:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:03:02,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:02,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:02,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024562843] [2023-11-19 05:03:02,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:03:02,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208738971] [2023-11-19 05:03:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208738971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:02,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:02,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:03:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628723995] [2023-11-19 05:03:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:03:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:02,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:03:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:03:02,437 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:04,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:04,850 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2023-11-19 05:03:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:03:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-19 05:03:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:04,855 INFO L225 Difference]: With dead ends: 133 [2023-11-19 05:03:04,855 INFO L226 Difference]: Without dead ends: 132 [2023-11-19 05:03:04,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:03:04,857 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 63 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:04,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 306 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 05:03:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-19 05:03:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 108. [2023-11-19 05:03:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 88 states have internal predecessors, (98), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-19 05:03:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2023-11-19 05:03:04,896 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 13 [2023-11-19 05:03:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:04,896 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2023-11-19 05:03:04,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2023-11-19 05:03:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:03:04,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:04,898 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:04,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:05,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:03:05,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1012077735, now seen corresponding path program 1 times [2023-11-19 05:03:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468734651] [2023-11-19 05:03:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:05,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:03:05,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991739581] [2023-11-19 05:03:05,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:05,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:05,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:05,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:05,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:03:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:05,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-19 05:03:05,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:05,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 44 [2023-11-19 05:03:05,427 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2023-11-19 05:03:05,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 76 [2023-11-19 05:03:05,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 55 [2023-11-19 05:03:06,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 22 [2023-11-19 05:03:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:06,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:06,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468734651] [2023-11-19 05:03:06,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:03:06,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991739581] [2023-11-19 05:03:06,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991739581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:06,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:06,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:03:06,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478391811] [2023-11-19 05:03:06,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:06,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:03:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:03:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:03:06,974 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:08,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:10,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:12,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:14,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:18,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:24,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:28,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:30,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:32,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:34,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:34,648 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2023-11-19 05:03:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:03:34,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 05:03:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:34,650 INFO L225 Difference]: With dead ends: 132 [2023-11-19 05:03:34,650 INFO L226 Difference]: Without dead ends: 131 [2023-11-19 05:03:34,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:03:34,652 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 57 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:34,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 313 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 8 Unknown, 0 Unchecked, 27.4s Time] [2023-11-19 05:03:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-19 05:03:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2023-11-19 05:03:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 88 states have internal predecessors, (97), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-19 05:03:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2023-11-19 05:03:34,676 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2023-11-19 05:03:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:34,676 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2023-11-19 05:03:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2023-11-19 05:03:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:03:34,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:34,678 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:34,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:34,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_31_to_38_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_31_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_31_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-19 05:03:34,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 596502850, now seen corresponding path program 1 times [2023-11-19 05:03:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:03:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783772333] [2023-11-19 05:03:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:03:34,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:03:34,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470728311] [2023-11-19 05:03:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:34,961 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:34,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0ab5fa-0961-414e-9591-116245d51e93/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:03:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:35,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 05:03:35,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:35,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,214 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2023-11-19 05:03:35,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 88 [2023-11-19 05:03:35,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-11-19 05:03:35,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:35,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 49 [2023-11-19 05:03:35,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-19 05:03:35,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:35,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:35,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:36,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:36,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:36,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,246 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2023-11-19 05:03:36,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 83 [2023-11-19 05:03:36,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2023-11-19 05:03:36,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:36,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-11-19 05:03:36,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,724 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2023-11-19 05:03:36,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 83 [2023-11-19 05:03:36,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:36,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:36,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2023-11-19 05:03:36,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2023-11-19 05:03:37,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,211 INFO L349 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2023-11-19 05:03:37,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 179 [2023-11-19 05:03:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:37,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-11-19 05:03:37,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:37,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 78 [2023-11-19 05:03:38,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:38,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-11-19 05:03:38,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:38,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 120 [2023-11-19 05:03:39,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-19 05:03:39,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:39,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:39,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:39,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,514 INFO L349 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2023-11-19 05:03:39,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 208 [2023-11-19 05:03:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:39,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:39,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:40,026 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:40,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:40,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 129 [2023-11-19 05:03:40,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 65 [2023-11-19 05:03:40,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 05:03:40,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-19 05:03:40,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 05:03:40,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:40,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:40,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 49 [2023-11-19 05:03:41,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-19 05:03:41,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,172 INFO L349 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-19 05:03:41,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 151 [2023-11-19 05:03:41,228 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,257 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,324 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:41,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 74 [2023-11-19 05:03:41,342 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,343 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-19 05:03:41,393 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,415 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,452 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:41,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 69 [2023-11-19 05:03:41,469 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,471 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,504 INFO L349 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-19 05:03:41,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 151 [2023-11-19 05:03:41,536 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,538 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,568 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,612 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:41,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 74 [2023-11-19 05:03:41,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,632 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2023-11-19 05:03:41,710 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,724 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,765 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:41,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 74 [2023-11-19 05:03:41,780 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,832 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:41,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 79 [2023-11-19 05:03:41,857 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,858 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,858 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,887 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-19 05:03:41,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 59 [2023-11-19 05:03:41,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,908 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-11-19 05:03:41,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 29 [2023-11-19 05:03:41,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 05:03:41,927 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:41,932 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,933 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,934 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:41,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,955 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-19 05:03:41,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 64 [2023-11-19 05:03:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:41,996 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-19 05:03:41,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 115 [2023-11-19 05:03:42,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,031 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-19 05:03:42,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 31 [2023-11-19 05:03:42,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-11-19 05:03:42,058 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,059 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,060 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,081 INFO L349 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2023-11-19 05:03:42,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 59 [2023-11-19 05:03:42,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,100 INFO L349 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-11-19 05:03:42,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 39 [2023-11-19 05:03:42,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 05:03:42,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-19 05:03:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,139 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2023-11-19 05:03:42,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 15 [2023-11-19 05:03:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2023-11-19 05:03:42,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 05:03:42,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,201 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:42,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 69 [2023-11-19 05:03:42,217 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,218 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,288 INFO L349 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2023-11-19 05:03:42,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 74 [2023-11-19 05:03:42,311 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,345 INFO L349 Elim1Store]: treesize reduction 59, result has 1.7 percent of original size [2023-11-19 05:03:42,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 151 [2023-11-19 05:03:42,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,368 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,385 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,386 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:03:42,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2023-11-19 05:03:42,431 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 05:03:42,439 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:43,001 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 [2023-11-19 05:03:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:03:43,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:43,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:03:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783772333] [2023-11-19 05:03:43,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:03:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470728311] [2023-11-19 05:03:43,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470728311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:43,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:03:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849505565] [2023-11-19 05:03:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:03:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:03:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:03:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:03:43,014 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:03:45,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:47,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:49,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:51,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:53,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:55,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 05:03:57,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]