./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/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_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:16:23,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:16:23,143 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:16:23,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:16:23,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:16:23,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:16:23,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:16:23,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:16:23,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:16:23,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:16:23,173 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:16:23,174 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:16:23,174 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:16:23,175 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:16:23,175 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:16:23,176 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:16:23,176 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:16:23,177 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:16:23,177 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:16:23,178 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:16:23,178 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:16:23,180 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:16:23,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:16:23,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:16:23,182 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:16:23,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:16:23,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:16:23,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:16:23,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:16:23,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:16:23,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:16:23,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:16:23,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:16:23,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:16:23,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:16:23,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:16:23,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:16:23,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:16:23,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:16:23,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:16:23,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:16:23,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:16:23,189 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_09804920-5b52-43bd-8f7a-84580e7c3ba6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 [2023-12-02 15:16:23,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:16:23,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:16:23,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:16:23,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:16:23,412 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:16:23,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-12-02 15:16:26,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:16:26,333 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:16:26,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-12-02 15:16:26,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/data/ec35aa676/8025579ba04a43a28c1e978588d8f446/FLAGafcabb993 [2023-12-02 15:16:26,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/data/ec35aa676/8025579ba04a43a28c1e978588d8f446 [2023-12-02 15:16:26,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:16:26,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:16:26,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:16:26,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:16:26,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:16:26,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3092b098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26, skipping insertion in model container [2023-12-02 15:16:26,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:16:26,553 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-12-02 15:16:26,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:16:26,577 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:16:26,591 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-12-02 15:16:26,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:16:26,613 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:16:26,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26 WrapperNode [2023-12-02 15:16:26,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:16:26,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:16:26,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:16:26,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:16:26,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,649 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-12-02 15:16:26,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:16:26,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:16:26,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:16:26,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:16:26,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:16:26,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:16:26,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:16:26,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:16:26,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (1/1) ... [2023-12-02 15:16:26,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:16:26,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:26,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:16:26,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:16:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:16:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:16:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:16:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:16:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:16:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:16:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:16:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:16:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:16:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:16:26,833 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:16:26,835 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:16:26,952 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:16:26,985 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:16:26,985 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:16:26,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:16:26 BoogieIcfgContainer [2023-12-02 15:16:26,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:16:26,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:16:26,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:16:26,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:16:26,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:16:26" (1/3) ... [2023-12-02 15:16:26,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498778ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:16:26, skipping insertion in model container [2023-12-02 15:16:26,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:16:26" (2/3) ... [2023-12-02 15:16:26,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498778ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:16:26, skipping insertion in model container [2023-12-02 15:16:26,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:16:26" (3/3) ... [2023-12-02 15:16:26,997 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2023-12-02 15:16:27,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:16:27,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:16:27,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:16:27,073 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;@50809116, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:16:27,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:16:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:16:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 15:16:27,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:27,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:27,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:16:27,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:27,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1269016545, now seen corresponding path program 1 times [2023-12-02 15:16:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:27,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538370063] [2023-12-02 15:16:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:27,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:27,384 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 15:16:27,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538370063] [2023-12-02 15:16:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538370063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:16:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:16:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:16:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600891408] [2023-12-02 15:16:27,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:16:27,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:16:27,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:27,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:16:27,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:16:27,424 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 15:16:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:16:27,480 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2023-12-02 15:16:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:16:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2023-12-02 15:16:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:16:27,490 INFO L225 Difference]: With dead ends: 36 [2023-12-02 15:16:27,490 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 15:16:27,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:16:27,496 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:16:27,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:16:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 15:16:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2023-12-02 15:16:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:16:27,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-02 15:16:27,531 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2023-12-02 15:16:27,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:16:27,531 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-02 15:16:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 15:16:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-02 15:16:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:16:27,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:27,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:16:27,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:16:27,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1475863465, now seen corresponding path program 1 times [2023-12-02 15:16:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:27,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225855377] [2023-12-02 15:16:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:16:27,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:27,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225855377] [2023-12-02 15:16:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225855377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:16:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127895912] [2023-12-02 15:16:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:27,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:27,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:16:27,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:16:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:27,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 15:16:27,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:16:27,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:16:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:16:27,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:28,180 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 20 treesize of output 18 [2023-12-02 15:16:28,186 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 26 treesize of output 24 [2023-12-02 15:16:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:16:28,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127895912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:16:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720709933] [2023-12-02 15:16:28,237 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-12-02 15:16:28,237 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:16:28,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:16:28,247 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:16:28,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:16:28,515 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-12-02 15:16:28,558 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:16:28,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '159#(and (exists ((|v_ULTIMATE.start_main_~index~0#1_39| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_1| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |v_ULTIMATE.start_main_~index~0#1_39|) (not (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_1|) 0) 4294967296) 0)) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_1|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_39| 4294967296)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:16:28,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:16:28,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:16:28,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 8] total 15 [2023-12-02 15:16:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173377600] [2023-12-02 15:16:28,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:16:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:16:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:16:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-02 15:16:28,938 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:16:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:16:29,267 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2023-12-02 15:16:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:16:29,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:16:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:16:29,269 INFO L225 Difference]: With dead ends: 47 [2023-12-02 15:16:29,269 INFO L226 Difference]: Without dead ends: 32 [2023-12-02 15:16:29,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-12-02 15:16:29,271 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:16:29,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:16:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-02 15:16:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-02 15:16:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:16:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-12-02 15:16:29,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2023-12-02 15:16:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:16:29,282 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-12-02 15:16:29,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:16:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-12-02 15:16:29,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:16:29,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:29,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:29,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:16:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 15:16:29,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:16:29,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash -428559622, now seen corresponding path program 1 times [2023-12-02 15:16:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:29,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212575198] [2023-12-02 15:16:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:29,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:16:29,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212575198] [2023-12-02 15:16:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212575198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:16:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260074080] [2023-12-02 15:16:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:29,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:29,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:29,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:16:29,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:16:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:29,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 15:16:29,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:16:29,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:16:29,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:16:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:16:30,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:31,102 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 75 treesize of output 71 [2023-12-02 15:16:31,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:16:31,127 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 253 treesize of output 245 [2023-12-02 15:16:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:16:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260074080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:16:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682870477] [2023-12-02 15:16:31,241 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-12-02 15:16:31,241 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:16:31,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:16:31,241 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:16:31,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:16:31,727 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 114 for LOIs [2023-12-02 15:16:32,263 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:16:36,612 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '413#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (exists ((|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_6| Int)) (and (= (mod |v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_2| 4294967296) 0) (exists ((|v_ULTIMATE.start_main_~index~0#1_49| Int)) (and (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_49| 4294967296)) (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_6|) (<= 0 |v_ULTIMATE.start_main_~index~0#1_49|))) (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_6| 1) (= |v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_2| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_6|) 4)) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_6| 0) (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_6|) 0) 4294967296) 0))) (exists ((|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_7| Int)) (and (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_7| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_7|) 0)) (exists ((|v_ULTIMATE.start_main_~index~0#1_49| Int)) (and (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_49| 4294967296)) (<= 1 |#StackHeapBarrier|) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_7|) (<= 0 |v_ULTIMATE.start_main_~index~0#1_49|))) (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_7| 0) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_7| 0) (not (= (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_7| 4294967296) 0))))))' at error location [2023-12-02 15:16:36,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:16:36,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:16:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 15] total 29 [2023-12-02 15:16:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114204094] [2023-12-02 15:16:36,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:16:36,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 15:16:36,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 15:16:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1287, Unknown=1, NotChecked=0, Total=1482 [2023-12-02 15:16:36,617 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 29 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:16:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:16:37,628 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2023-12-02 15:16:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 15:16:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2023-12-02 15:16:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:16:37,629 INFO L225 Difference]: With dead ends: 71 [2023-12-02 15:16:37,629 INFO L226 Difference]: Without dead ends: 47 [2023-12-02 15:16:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=342, Invalid=2107, Unknown=1, NotChecked=0, Total=2450 [2023-12-02 15:16:37,632 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 75 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:16:37,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 74 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:16:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-02 15:16:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2023-12-02 15:16:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 15:16:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-12-02 15:16:37,643 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2023-12-02 15:16:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:16:37,643 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-12-02 15:16:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.76) internal successors, (44), 26 states have internal predecessors, (44), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:16:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-12-02 15:16:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:16:37,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:37,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:37,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:16:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:37,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:16:37,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2060334989, now seen corresponding path program 1 times [2023-12-02 15:16:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141987687] [2023-12-02 15:16:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:16:37,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:37,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141987687] [2023-12-02 15:16:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141987687] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:16:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815816820] [2023-12-02 15:16:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:37,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:37,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:37,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:16:37,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:16:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:38,038 WARN L260 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-02 15:16:38,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:16:38,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:16:38,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:16:38,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:16:38,090 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 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-02 15:16:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:16:38,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:50,976 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 197 treesize of output 189 [2023-12-02 15:16:50,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:16:50,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1617 treesize of output 1573 [2023-12-02 15:16:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:16:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815816820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:16:51,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [594117510] [2023-12-02 15:16:51,387 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:16:51,387 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:16:51,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:16:51,388 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:16:51,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:16:51,900 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 85 for LOIs [2023-12-02 15:16:52,001 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:16:58,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '803#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (exists ((|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_26| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_26| 2) 0)) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_26|) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_26| 4294967296) 999) (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_26|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_26| 4294967296) 4)) 4294967296) 0))) (exists ((|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_29| Int)) (and (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_29| 0) (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29| 2) 0) (or (and (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29| 0) (exists ((|v_ULTIMATE.start_main_~index~0#1_65| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_65| 4294967296)) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_29|) (<= 1 |v_ULTIMATE.start_main_~index~0#1_65|)))) (and (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29|) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29| 4294967296) 999))) (not (= (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_19| 4294967296) 0)) (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_19| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_29|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_29| 4294967296) 4)))))))' at error location [2023-12-02 15:16:58,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:16:58,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:16:58,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 22] total 40 [2023-12-02 15:16:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045556067] [2023-12-02 15:16:58,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:16:58,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 15:16:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 15:16:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2236, Unknown=5, NotChecked=0, Total=2550 [2023-12-02 15:16:58,544 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 40 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 37 states have internal predecessors, (59), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 15:17:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:17:12,991 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2023-12-02 15:17:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 15:17:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 37 states have internal predecessors, (59), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2023-12-02 15:17:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:17:12,993 INFO L225 Difference]: With dead ends: 113 [2023-12-02 15:17:12,993 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 15:17:12,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=872, Invalid=4819, Unknown=9, NotChecked=0, Total=5700 [2023-12-02 15:17:12,997 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 157 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:17:12,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 101 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 15:17:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 15:17:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2023-12-02 15:17:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 54 states have internal predecessors, (59), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:17:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2023-12-02 15:17:13,012 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 29 [2023-12-02 15:17:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:17:13,013 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2023-12-02 15:17:13,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 37 states have internal predecessors, (59), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 15:17:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2023-12-02 15:17:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 15:17:13,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:17:13,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 15:17:13,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:17:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:17:13,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:17:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:17:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -716203426, now seen corresponding path program 2 times [2023-12-02 15:17:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:17:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748345983] [2023-12-02 15:17:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:17:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:17:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:17:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:17:13,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:17:13,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748345983] [2023-12-02 15:17:13,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748345983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:17:13,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424841829] [2023-12-02 15:17:13,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:17:13,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:17:13,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:17:13,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:17:13,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:17:13,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:17:13,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:17:13,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:17:13,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:17:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 15:17:13,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:17:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:17:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424841829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:17:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1961799034] [2023-12-02 15:17:13,592 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:17:13,592 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:17:13,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:17:13,592 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:17:13,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:17:14,118 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 85 for LOIs [2023-12-02 15:17:14,220 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:17:20,586 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1356#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (exists ((|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_44| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_44| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_44| 2) 0)) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_44|) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_44| 4294967296) 999) (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_44|) (* 4 (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_44| 4294967296))) 4294967296) 0))) (exists ((|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_47| Int)) (and (or (and (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47| 4294967296) 999) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47|)) (and (exists ((|v_ULTIMATE.start_main_~index~0#1_85| Int)) (and (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_47|) (<= 1 |#StackHeapBarrier|) (<= 1 |v_ULTIMATE.start_main_~index~0#1_85|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_85| 4294967296)))) (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47| 0))) (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47| 2) 0) (not (= 0 (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_28| 4294967296))) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_47| 0) (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_28| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_47|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_47| 4294967296) 4)))))))' at error location [2023-12-02 15:17:20,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:17:20,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:17:20,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2023-12-02 15:17:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429257818] [2023-12-02 15:17:20,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:17:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:17:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:17:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:17:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=447, Unknown=2, NotChecked=0, Total=552 [2023-12-02 15:17:20,588 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:17:21,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:17:21,172 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2023-12-02 15:17:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:17:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-12-02 15:17:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:17:21,176 INFO L225 Difference]: With dead ends: 169 [2023-12-02 15:17:21,176 INFO L226 Difference]: Without dead ends: 108 [2023-12-02 15:17:21,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=156, Invalid=598, Unknown=2, NotChecked=0, Total=756 [2023-12-02 15:17:21,178 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 140 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:17:21,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 99 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:17:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-02 15:17:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2023-12-02 15:17:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 59 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 15:17:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2023-12-02 15:17:21,203 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 39 [2023-12-02 15:17:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:17:21,203 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2023-12-02 15:17:21,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:17:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2023-12-02 15:17:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 15:17:21,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:17:21,204 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 15:17:21,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:17:21,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:17:21,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:17:21,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:17:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 717006174, now seen corresponding path program 3 times [2023-12-02 15:17:21,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:17:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669535827] [2023-12-02 15:17:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:17:21,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:17:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:17:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:17:21,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:17:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669535827] [2023-12-02 15:17:21,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669535827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:17:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509602709] [2023-12-02 15:17:21,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:17:21,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:17:21,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:17:21,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:17:21,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:17:22,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:17:22,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:17:22,167 WARN L260 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 115 conjunts are in the unsatisfiable core [2023-12-02 15:17:22,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:17:22,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:17:22,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 15:17:22,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,224 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 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-02 15:17:22,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-12-02 15:17:22,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2023-12-02 15:17:22,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 68 [2023-12-02 15:17:22,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2023-12-02 15:17:22,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-12-02 15:17:22,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2023-12-02 15:17:22,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:17:22,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2023-12-02 15:17:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:17:24,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:18:31,575 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 746 treesize of output 736 [2023-12-02 15:18:32,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:18:32,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285569232808 treesize of output 285501001640 [2023-12-02 15:18:50,561 WARN L293 SmtUtils]: Spent 17.70s on a formula simplification. DAG size of input: 9724 DAG size of output: 527 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 15:19:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 37 refuted. 3 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:19:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509602709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:19:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [154733481] [2023-12-02 15:19:03,794 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:19:03,794 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:19:03,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:19:03,795 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:19:03,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:19:04,236 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 85 for LOIs [2023-12-02 15:19:04,343 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:19:24,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2049#(and (or (exists ((|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_68| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_68| Int)) (and (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_68|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_68| 4294967296) 4)) 4294967296) 0) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_68| 4294967296) 999) (not (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_68| 2) 0)) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_68|))) (exists ((|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_71| Int) (|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_41| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_71| Int)) (and (not (= (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_41| 4294967296) 0)) (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_41| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_71|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71| 4294967296) 4))) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_71| 0) (or (and (exists ((|v_ULTIMATE.start_main_~index~0#1_119| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |v_ULTIMATE.start_main_~index~0#1_119|) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_71|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_119| 4294967296)))) (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71| 0)) (and (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71| 4294967296) 999) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71|))) (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_71| 2) 0)))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:19:24,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:19:24,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:19:24,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 34] total 68 [2023-12-02 15:19:24,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445412249] [2023-12-02 15:19:24,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:19:24,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-02 15:19:24,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:19:24,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-02 15:19:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=766, Invalid=5389, Unknown=7, NotChecked=0, Total=6162 [2023-12-02 15:19:24,595 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 68 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 65 states have internal predecessors, (91), 9 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 15:19:41,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:19:46,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:20:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:20:02,883 INFO L93 Difference]: Finished difference Result 186 states and 216 transitions. [2023-12-02 15:20:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-02 15:20:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 65 states have internal predecessors, (91), 9 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2023-12-02 15:20:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:20:02,886 INFO L225 Difference]: With dead ends: 186 [2023-12-02 15:20:02,887 INFO L226 Difference]: Without dead ends: 126 [2023-12-02 15:20:02,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3572 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=1821, Invalid=10158, Unknown=11, NotChecked=0, Total=11990 [2023-12-02 15:20:02,893 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 360 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:20:02,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 311 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-02 15:20:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-02 15:20:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2023-12-02 15:20:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 90 states have internal predecessors, (95), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:20:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2023-12-02 15:20:02,933 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 45 [2023-12-02 15:20:02,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:20:02,933 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2023-12-02 15:20:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 65 states have internal predecessors, (91), 9 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 15:20:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2023-12-02 15:20:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 15:20:02,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:20:02,935 INFO L195 NwaCegarLoop]: trace histogram [11, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:20:02,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:20:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:20:03,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:20:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:20:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash 624947343, now seen corresponding path program 4 times [2023-12-02 15:20:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:20:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388271327] [2023-12-02 15:20:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:20:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:20:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:20:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:20:03,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:20:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388271327] [2023-12-02 15:20:03,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388271327] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:20:03,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145975165] [2023-12-02 15:20:03,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:20:03,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:20:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:20:03,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:20:03,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:20:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:20:03,897 WARN L260 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 135 conjunts are in the unsatisfiable core [2023-12-02 15:20:03,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:20:03,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:20:03,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 18 [2023-12-02 15:20:04,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,034 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-02 15:20:04,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-12-02 15:20:04,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2023-12-02 15:20:04,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,257 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 10 case distinctions, treesize of input 47 treesize of output 58 [2023-12-02 15:20:04,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2023-12-02 15:20:04,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2023-12-02 15:20:04,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2023-12-02 15:20:04,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2023-12-02 15:20:04,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:20:04,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 82 treesize of output 108 [2023-12-02 15:20:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:20:09,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:12,791 WARN L293 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:24:02,666 WARN L293 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:24:02,693 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 1129 treesize of output 1115 [2023-12-02 15:24:07,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:24:07,408 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 826879074377116 treesize of output 826810052861340 [2023-12-02 15:25:23,649 WARN L293 SmtUtils]: Spent 1.27m on a formula simplification. DAG size of input: 38503 DAG size of output: 739 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-02 15:26:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 58 proven. 57 refuted. 9 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:26:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145975165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1192960713] [2023-12-02 15:26:20,883 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:26:20,883 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:20,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:20,883 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:20,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:21,361 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 111 for LOIs [2023-12-02 15:26:21,519 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:52,215 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2945#(and (or (exists ((|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_94| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_94| Int) (|v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_94| Int)) (and (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_94|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_94| 4294967296) 4)) |v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_45|) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_94|) (= (mod |v_ULTIMATE.start_main_#t~mem4#1_BEFORE_CALL_45| 4294967296) 0) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_94| 4294967296) 999) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_94| 0) (not (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_94| 2) 0)))) (exists ((|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_97| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_97| Int) (|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_55| Int)) (and (not (= (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_55| 4294967296) 0)) (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97| 2) 0) (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_97| 0) (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_55| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_97|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97| 4294967296) 4))) (or (and (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97|) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97| 4294967296) 999)) (and (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_97| 0) (exists ((|v_ULTIMATE.start_main_~index~0#1_157| Int)) (and (<= 1 |v_ULTIMATE.start_main_~index~0#1_157|) (<= 1 |#StackHeapBarrier|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_157| 4294967296)) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_97|)))))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-12-02 15:26:52,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:52,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:26:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 28, 41] total 80 [2023-12-02 15:26:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190490160] [2023-12-02 15:26:52,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-02 15:26:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-02 15:26:52,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=6921, Unknown=20, NotChecked=0, Total=8010 [2023-12-02 15:26:52,220 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 80 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 77 states have internal predecessors, (106), 11 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-02 15:27:08,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:28:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:09,257 INFO L93 Difference]: Finished difference Result 255 states and 293 transitions. [2023-12-02 15:28:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-02 15:28:09,258 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 77 states have internal predecessors, (106), 11 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 55 [2023-12-02 15:28:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:09,259 INFO L225 Difference]: With dead ends: 255 [2023-12-02 15:28:09,259 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 15:28:09,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 81 SyntacticMatches, 9 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4891 ImplicationChecksByTransitivity, 232.6s TimeCoverageRelationStatistics Valid=2529, Invalid=13201, Unknown=20, NotChecked=0, Total=15750 [2023-12-02 15:28:09,266 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 595 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:09,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 331 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2023-12-02 15:28:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 15:28:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-02 15:28:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 122 states have internal predecessors, (131), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:28:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2023-12-02 15:28:09,330 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 55 [2023-12-02 15:28:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:09,330 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2023-12-02 15:28:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 77 states have internal predecessors, (106), 11 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-02 15:28:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2023-12-02 15:28:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 15:28:09,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:09,333 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1] [2023-12-02 15:28:09,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:28:09,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:28:09,533 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:28:09,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash -543617554, now seen corresponding path program 5 times [2023-12-02 15:28:09,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:09,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432206688] [2023-12-02 15:28:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:09,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-02 15:28:10,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432206688] [2023-12-02 15:28:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432206688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:28:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920783279] [2023-12-02 15:28:10,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:28:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:28:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:10,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:28:10,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:28:48,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 15:28:48,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:28:48,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 15:28:48,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:28:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-12-02 15:28:48,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:28:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-02 15:28:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920783279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:28:49,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1355435003] [2023-12-02 15:28:49,530 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:28:49,530 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:28:49,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:28:49,530 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:28:49,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:28:49,962 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 85 for LOIs [2023-12-02 15:28:50,081 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:28:58,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4334#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (exists ((|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_112| Int) (|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_112| Int)) (and (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_112| 4294967296) 999) (not (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_112| 2) 0)) (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_112|) (= (mod (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_112|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_112| 4294967296) 4)) 4294967296) 0))) (exists ((|v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115| Int) (|v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_115| Int) (|v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_64| Int) (|v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_115| Int)) (and (= |v_ULTIMATE.start_main_~#array~0#1.offset_BEFORE_CALL_115| 0) (not (= (mod |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_64| 4294967296) 0)) (or (and (<= 1 |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115|) (<= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115| 4294967296) 999)) (and (= |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115| 0) (exists ((|v_ULTIMATE.start_main_~index~0#1_201| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 1000 (mod |v_ULTIMATE.start_main_~index~0#1_201| 4294967296)) (<= 2 |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_115|) (<= 0 |v_ULTIMATE.start_main_~index~0#1_201|))))) (= (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115| 2) 0) (= |v_ULTIMATE.start_main_#t~mem3#1_BEFORE_CALL_64| (select (select |#memory_int| |v_ULTIMATE.start_main_~#array~0#1.base_BEFORE_CALL_115|) (* (mod |v_ULTIMATE.start_main_~index~0#1_BEFORE_CALL_115| 4294967296) 4)))))))' at error location [2023-12-02 15:28:58,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:28:58,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:28:58,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 29 [2023-12-02 15:28:58,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208961341] [2023-12-02 15:28:58,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:28:58,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 15:28:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 15:28:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1246, Unknown=1, NotChecked=0, Total=1560 [2023-12-02 15:28:58,440 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:31:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:06,573 INFO L93 Difference]: Finished difference Result 361 states and 441 transitions. [2023-12-02 15:31:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 15:31:06,573 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 119 [2023-12-02 15:31:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:06,575 INFO L225 Difference]: With dead ends: 361 [2023-12-02 15:31:06,575 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 15:31:06,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 119.4s TimeCoverageRelationStatistics Valid=1255, Invalid=3435, Unknown=2, NotChecked=0, Total=4692 [2023-12-02 15:31:06,578 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 797 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:06,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 485 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-02 15:31:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 15:31:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 154. [2023-12-02 15:31:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 126 states have (on average 1.0555555555555556) internal successors, (133), 127 states have internal predecessors, (133), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:31:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 169 transitions. [2023-12-02 15:31:06,653 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 169 transitions. Word has length 119 [2023-12-02 15:31:06,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:06,653 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 169 transitions. [2023-12-02 15:31:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:31:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 169 transitions. [2023-12-02 15:31:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 15:31:06,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:06,655 INFO L195 NwaCegarLoop]: trace histogram [26, 12, 12, 11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1] [2023-12-02 15:31:06,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:31:06,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:06,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:31:06,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2141322478, now seen corresponding path program 6 times [2023-12-02 15:31:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612376506] [2023-12-02 15:31:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 22 proven. 351 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-12-02 15:31:08,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:08,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612376506] [2023-12-02 15:31:08,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612376506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:08,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15053363] [2023-12-02 15:31:08,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:31:08,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:08,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:08,339 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:08,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09804920-5b52-43bd-8f7a-84580e7c3ba6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:31:10,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:31:10,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:31:10,971 WARN L260 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 231 conjunts are in the unsatisfiable core [2023-12-02 15:31:10,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:10,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 15:31:11,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-02 15:31:11,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-02 15:31:11,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,182 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 1 case distinctions, treesize of input 32 treesize of output 34 [2023-12-02 15:31:11,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-12-02 15:31:11,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 58 [2023-12-02 15:31:11,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 59 treesize of output 70 [2023-12-02 15:31:11,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 82 [2023-12-02 15:31:11,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 94 [2023-12-02 15:31:11,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 106 [2023-12-02 15:31:11,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:11,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 118 [2023-12-02 15:31:12,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:12,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 104 treesize of output 130 [2023-12-02 15:31:12,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:12,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 113 treesize of output 142 [2023-12-02 15:31:12,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:12,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 122 treesize of output 154 [2023-12-02 15:31:12,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 131 treesize of output 166 [2023-12-02 15:31:13,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:13,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 140 treesize of output 178 [2023-12-02 15:31:13,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:13,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 149 treesize of output 190 [2023-12-02 15:31:13,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:13,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 158 treesize of output 202 [2023-12-02 15:31:13,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:13,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 167 treesize of output 214 [2023-12-02 15:31:14,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:14,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 176 treesize of output 226 [2023-12-02 15:31:14,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:31:14,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 185 treesize of output 238