./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh --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 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:32:03,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:32:03,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 13:32:03,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:32:03,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:32:03,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:32:03,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:32:03,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:32:03,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:32:03,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:32:03,662 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:32:03,662 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:32:03,663 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:32:03,663 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:32:03,664 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:32:03,664 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:32:03,665 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:32:03,665 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:32:03,666 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:32:03,666 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:32:03,667 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:32:03,667 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:32:03,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:32:03,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:32:03,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:32:03,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:32:03,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:32:03,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:32:03,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:32:03,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:32:03,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:32:03,672 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:32:03,672 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:32:03,672 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:32:03,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:32:03,673 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:32:03,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:32:03,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:32:03,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:32:03,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:32:03,674 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:32:03,674 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:32:03,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:32:03,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:32:03,676 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_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35431d6758accd7fd2ee5ddf2b1a76a0fd5efeada0a27759fb5cb6b7d4ed3c08 [2023-12-02 13:32:03,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:32:03,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:32:03,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:32:03,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:32:03,928 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:32:03,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2023-12-02 13:32:06,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:32:06,839 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:32:06,839 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/sv-benchmarks/c/recursified_nla-digbench/recursified_ps4-ll.c [2023-12-02 13:32:06,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/data/fd6e329d5/9edb78de1b344ab78de3325609923fda/FLAGada1e495a [2023-12-02 13:32:06,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/data/fd6e329d5/9edb78de1b344ab78de3325609923fda [2023-12-02 13:32:06,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:32:06,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:32:06,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:32:06,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:32:06,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:32:06,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:32:06" (1/1) ... [2023-12-02 13:32:06,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30baf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:06, skipping insertion in model container [2023-12-02 13:32:06,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:32:06" (1/1) ... [2023-12-02 13:32:06,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:32:07,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:32:07,081 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:32:07,106 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:32:07,121 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:32:07,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07 WrapperNode [2023-12-02 13:32:07,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:32:07,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:32:07,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:32:07,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:32:07,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,163 INFO L138 Inliner]: procedures = 16, calls = 64, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2023-12-02 13:32:07,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:32:07,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:32:07,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:32:07,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:32:07,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:32:07,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:32:07,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:32:07,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:32:07,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (1/1) ... [2023-12-02 13:32:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:32:07,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:32:07,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:32:07,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:32:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:32:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:32:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:32:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:32:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:32:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:32:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:32:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2023-12-02 13:32:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2023-12-02 13:32:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:32:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:32:07,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:32:07,339 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:32:07,341 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:32:07,763 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:32:07,796 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:32:07,796 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:32:07,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:32:07 BoogieIcfgContainer [2023-12-02 13:32:07,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:32:07,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:32:07,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:32:07,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:32:07,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:32:06" (1/3) ... [2023-12-02 13:32:07,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1419221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:32:07, skipping insertion in model container [2023-12-02 13:32:07,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:32:07" (2/3) ... [2023-12-02 13:32:07,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1419221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:32:07, skipping insertion in model container [2023-12-02 13:32:07,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:32:07" (3/3) ... [2023-12-02 13:32:07,816 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps4-ll.c [2023-12-02 13:32:07,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:32:07,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-12-02 13:32:07,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:32:07,898 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;@4e0cb2ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:32:07,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-12-02 13:32:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 70 states have (on average 1.8857142857142857) internal successors, (132), 131 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:32:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 13:32:07,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:32:07,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 13:32:07,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 13:32:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:32:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 190432111, now seen corresponding path program 1 times [2023-12-02 13:32:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:32:07,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432764797] [2023-12-02 13:32:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:32:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:32:08,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:32:08,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432764797] [2023-12-02 13:32:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432764797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:32:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:32:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:32:08,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092148250] [2023-12-02 13:32:08,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:32:08,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:32:08,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:32:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:32:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:32:08,415 INFO L87 Difference]: Start difference. First operand has 138 states, 70 states have (on average 1.8857142857142857) internal successors, (132), 131 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:32:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:32:08,726 INFO L93 Difference]: Finished difference Result 320 states and 330 transitions. [2023-12-02 13:32:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:32:08,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 13:32:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:32:08,739 INFO L225 Difference]: With dead ends: 320 [2023-12-02 13:32:08,739 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 13:32:08,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:32:08,747 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 201 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:32:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 514 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:32:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 13:32:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 164. [2023-12-02 13:32:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.84375) internal successors, (177), 156 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 13:32:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 188 transitions. [2023-12-02 13:32:08,798 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 188 transitions. Word has length 5 [2023-12-02 13:32:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:32:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 188 transitions. [2023-12-02 13:32:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:32:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 188 transitions. [2023-12-02 13:32:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:32:08,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:32:08,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:32:08,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:32:08,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 13:32:08,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:32:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1678331695, now seen corresponding path program 1 times [2023-12-02 13:32:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:32:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066728145] [2023-12-02 13:32:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:32:08,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:32:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550870556] [2023-12-02 13:32:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:08,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:32:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:32:08,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:32:08,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:32:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:08,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:32:08,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:32:08,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:32:09,031 INFO L349 Elim1Store]: treesize reduction 40, result has 35.5 percent of original size [2023-12-02 13:32:09,032 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 1 case distinctions, treesize of input 64 treesize of output 45 [2023-12-02 13:32:09,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:32:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:32:09,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:32:09,065 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2023-12-02 13:32:09,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2023-12-02 13:32:09,110 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 13:32:09,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 87 [2023-12-02 13:32:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:32:09,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:32:09,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:32:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066728145] [2023-12-02 13:32:09,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:32:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550870556] [2023-12-02 13:32:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550870556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:32:09,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:32:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:32:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890451361] [2023-12-02 13:32:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:32:09,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:32:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:32:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:32:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:32:09,340 INFO L87 Difference]: Start difference. First operand 164 states and 188 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:32:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:32:09,723 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2023-12-02 13:32:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:32:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 13:32:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:32:09,726 INFO L225 Difference]: With dead ends: 247 [2023-12-02 13:32:09,726 INFO L226 Difference]: Without dead ends: 241 [2023-12-02 13:32:09,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:32:09,728 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 178 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:32:09,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 489 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:32:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-02 13:32:09,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 164. [2023-12-02 13:32:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.78125) internal successors, (171), 156 states have internal predecessors, (171), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 13:32:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2023-12-02 13:32:09,747 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 7 [2023-12-02 13:32:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:32:09,748 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2023-12-02 13:32:09,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:32:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2023-12-02 13:32:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 13:32:09,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:32:09,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:32:09,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:32:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:32:09,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-12-02 13:32:09,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:32:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2072340233, now seen corresponding path program 1 times [2023-12-02 13:32:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:32:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649341447] [2023-12-02 13:32:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:32:09,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:32:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685094347] [2023-12-02 13:32:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:32:09,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:32:09,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:32:09,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:32:09,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bb926b4-d76e-4696-8dbc-503e9469ba2d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:32:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:32:10,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 13:32:10,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:32:41,424 WARN L293 SmtUtils]: Spent 31.29s on a formula simplification. DAG size of input: 362 DAG size of output: 176 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:32:41,424 INFO L349 Elim1Store]: treesize reduction 1371, result has 30.4 percent of original size [2023-12-02 13:32:41,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 15 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 18 new quantified variables, introduced 78 case distinctions, treesize of input 56374 treesize of output 24773 [2023-12-02 13:32:44,649 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:32:44,649 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 1 case distinctions, treesize of input 34 treesize of output 29 [2023-12-02 13:32:50,672 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 25 treesize of output 22 [2023-12-02 13:32:52,812 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:32:52,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 71 [2023-12-02 13:36:05,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:05,285 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:05,325 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:05,490 INFO L349 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2023-12-02 13:36:05,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 2780 treesize of output 2759 [2023-12-02 13:36:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:07,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:07,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:08,163 INFO L349 Elim1Store]: treesize reduction 36, result has 41.0 percent of original size [2023-12-02 13:36:08,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 7673 treesize of output 7624 [2023-12-02 13:36:16,935 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:16,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:16,936 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:16,950 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:16,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:16,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 269 [2023-12-02 13:36:17,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:36:17,096 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:17,098 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:17,124 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:17,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:17,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 1742 treesize of output 1649 [2023-12-02 13:36:20,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:20,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:36:22,760 INFO L349 Elim1Store]: treesize reduction 155, result has 39.5 percent of original size [2023-12-02 13:36:22,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 35548 treesize of output 35378 [2023-12-02 13:37:50,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:50,085 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:50,091 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:50,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 17 [2023-12-02 13:37:52,607 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:52,609 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:52,613 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:52,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 17 [2023-12-02 13:37:54,399 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:54,407 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:54,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 35 [2023-12-02 13:37:54,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:54,540 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:54,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 17 [2023-12-02 13:37:54,752 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:54,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:54,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 17 [2023-12-02 13:37:55,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:55,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:55,135 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:55,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 17 [2023-12-02 13:37:56,111 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:56,111 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:56,118 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:56,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 17 [2023-12-02 13:37:57,408 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:57,408 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:37:57,414 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-02 13:37:57,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 17 [2023-12-02 13:38:04,570 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 13:38:04,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55362 treesize of output 48592